WO2014199429A1 - Système de haut-parleurs en réseau - Google Patents

Système de haut-parleurs en réseau Download PDF

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Publication number
WO2014199429A1
WO2014199429A1 PCT/JP2013/065974 JP2013065974W WO2014199429A1 WO 2014199429 A1 WO2014199429 A1 WO 2014199429A1 JP 2013065974 W JP2013065974 W JP 2013065974W WO 2014199429 A1 WO2014199429 A1 WO 2014199429A1
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WO
WIPO (PCT)
Prior art keywords
adjustment plate
connection module
sound
sound emitting
speaker device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/065974
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English (en)
Japanese (ja)
Inventor
久保田　裕司
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Toa Corp
Original Assignee
Toa Corp
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Filing date
Publication date
Application filed by Toa Corp filed Critical Toa Corp
Priority to PCT/JP2013/065974 priority Critical patent/WO2014199429A1/fr
Publication of WO2014199429A1 publication Critical patent/WO2014199429A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Definitions

  • the present invention relates to an array speaker device, and more particularly, to an improvement of an array speaker device including two or more sound emission units having speaker units provided on the front surface.
  • the line array speaker is a speaker device that emits sound waves as a linear sound source, and is a speaker system that has excellent directivity and long reach.
  • a line array speaker two or more speaker units are linearly arranged with respect to a speaker housing, and the diffusion of sound in the direction in which the speaker units are arranged is suppressed by interference of sound waves emitted from each speaker unit.
  • the speaker housing when changing the directivity direction, the speaker housing has to be tilted. For this reason, the installation of the array speaker device has a problem that a mounting bracket capable of adjusting the tilt is required. Further, each speaker unit is fixedly attached to the speaker housing, and its inclination cannot be individually changed. For this reason, there is a problem that the shape of the target listening area and the sound pressure distribution cannot be changed.
  • Patent Document 1 discloses a speaker system in which two speaker devices are connected by a hinge.
  • Patent Document 2 discloses a speaker system in which four speaker devices are connected in a line using a connection fitting.
  • Patent Document 3 describes that the angle between speaker devices is adjusted by adjusting the attachment position of the connecting bracket.
  • the inclination of each speaker device can be individually changed by adjusting the angle between the speaker devices.
  • the directivity characteristics of the speaker system can be changed or the directivity direction can be tilted by exchanging the connection fitting for connecting the speaker devices or changing the mounting position of the connection fitting.
  • the operation of individually adjusting the inclination of each speaker device is complicated so that a desired directivity characteristic or directivity direction can be obtained.
  • the work of adjusting the inclination of all the speaker devices is extremely complicated.
  • it is difficult to accurately adjust the inclination of each speaker device Furthermore, there is a problem that it is more difficult to adjust the directivity after installing the speaker system.
  • a line array speaker is known in which directivity characteristics can be electrically adjusted using digital signal processing technology.
  • fine adjustment of the directivity angle is easy, and the directivity characteristics can be changed after installation.
  • a D / A (Digital-to-Analog) converter, a power amplifier, and a DSP (Digital Signal-Processor) corresponding to the number of speaker units to be driven are required, which increases the manufacturing cost of the speaker system. .
  • JP 7-307991 A Japanese Utility Model Publication No. 2-113493 JP 2006-20257 A
  • an object of the present invention is to provide an array speaker device that can change directivity characteristics of a speaker system including two or more sound emission units by a simple adjustment operation.
  • an object of the present invention is to provide an array speaker device that can change the shape of the target listening area and the sound pressure distribution by a simple adjustment operation.
  • Another object of the present invention is to provide an array speaker device that can change the directivity characteristics of the speaker system even after the array speaker device is installed.
  • the array speaker device includes a connection module connected in a line in the vertical direction so that two or more sound emission units can be bent, and a vertical direction relative to the connection module.
  • the sound emitting unit is provided with a speaker unit on the front surface, and an engaging member that is engaged with the adjustment plate is provided on the side surface, and the adjustment plate includes the adjustment plate.
  • An engagement member guide for restraining the engagement member to move on a predetermined line track on the plate, the line track having an inclination in a vertical direction, the connection module, the adjustment plate,
  • the engagement element is configured to move in the front-rear direction by relative movement.
  • the connection module is configured by connecting the sound emission units in a line in the vertical direction.
  • the engaging elements of the sound emitting units move in the front-rear direction according to the linear track of the engaging guide that is inclined with respect to the vertical direction.
  • the sound emitting units are supported so as to be rotatable about the engaging element, and are connected to each other so as to be bendable. For this reason, if the position of the engaging element of each sound emitting unit is determined, the position and inclination of each sound emitting unit are uniquely determined, and the shape and inclination of the connection module are also determined.
  • the adjustment plate is moved in the vertical direction, the positions and inclinations of two or more sound emitting units can be changed simultaneously, and the shape and inclination of the connecting module can be changed. Therefore, the directivity of the array speaker device can be changed by a simple adjustment operation.
  • the linear trajectory is determined in advance so that the shape of the connection module is changed by the vertical movement of the adjustment plate.
  • the array speaker device is configured such that the engaging element is formed of a protrusion, and the engaging guide is formed of a long hole with which the protrusion is engaged.
  • the engaging guide can be formed by drilling the adjustment plate, and the array speaker device can be easily manufactured and provided at low cost.
  • the array speaker device is configured by connecting peripheral portions of the front surface of the sound emitting unit to each other in addition to the above configuration. With such a configuration, the shape and inclination of the connection module can be changed while maintaining the interval between the sound emitting units.
  • the baffle plates of the two or more speaker units are formed of a common plate-like body, and the plate-like body is thin between the sound emitting units. A part is formed, and the two or more sound emitting units are configured to be foldably connected.
  • the linear trajectory is determined in advance so that the inclination of the connection module is changed by the vertical movement of the adjustment plate.
  • the linear track substantially matches the shape of the front surface of the connection module with the clothoid curve, and the movement of the adjustment plate in the vertical direction causes the clothoid
  • the clothoid parameter of the curve is predetermined to change.
  • the array speaker device is configured such that, in addition to the above configuration, the adjustment plate is rotatable about one end of the connection module.
  • An array speaker device includes, in addition to the above configuration, a connection module that is connected in a row in the vertical direction so that two or more sound emission units can be bent, and is relative to the connection module. And an adjustment plate that is mounted so as to be movable in the vertical direction. The adjustment plate is provided with an engaging element that is engaged with the sound emission unit. The sound emission unit is provided with a speaker unit on the front surface.
  • an engaging member guide for restraining the engaging member to move on a predetermined line trajectory on the sound emitting unit is provided on a side surface, and the line trajectory has an inclination in the vertical direction,
  • the connection module is configured by connecting the sound emission units in a line in the vertical direction. If the adjustment plate is moved in the vertical direction relative to such a connection module, the engagement member of the adjustment plate moves on the linear track of the engagement guide having an inclination in the vertical direction, and the engagement guide is Move back and forth.
  • the sound emitting units are supported so as to be rotatable about the engaging element, and are connected to each other so as to be bendable. For this reason, if the position of the engagement element on the engagement element guide is determined, the position and inclination of each sound emitting unit are uniquely determined, and the shape and inclination of the coupling module are also determined. In other words, if the adjustment plate is moved in the vertical direction, the engagement element moves on the line track of the engagement guide, the shape and inclination of the connection module change, and the directivity characteristic or directivity direction of the array speaker device changes. Can do.
  • the adjustment plate is moved in the vertical direction, the positions and inclinations of two or more sound emitting units can be changed simultaneously, and the shape and inclination of the connecting module can be changed. Therefore, the directivity of the array speaker device can be changed by a simple adjustment operation.
  • the position and the inclination of two or more sound emitting units are simultaneously changed by moving the adjustment plate in the vertical direction, and the shape or the inclination of the connection module including these sound emitting units is changed. be able to. For this reason, the directivity characteristics of the array speaker device can be changed or the directivity direction can be tilted by a simple adjustment operation.
  • the array speaker device can change the inclination of the connecting module while maintaining the shape of the connecting module by rotating the adjustment plate around one end of the connecting module. For this reason, the directivity direction of the speaker system can be tilted by a simple adjustment operation.
  • the array speaker device according to the present invention can easily change the directivity characteristics or the directivity direction even after the array speaker device is installed, as long as the adjustment plate can move relative to the connection module. Can tilt.
  • the array speaker device according to the present invention can be provided at a low cost while suppressing the manufacturing cost.
  • FIG. 3 is a perspective view illustrating a configuration example of a connection module 31 in FIG. 2. It is the perspective view which showed the structural example of the baffle board 4 of FIG. It is the figure which expanded and showed a part of connection module 31 of FIG. 3, and the left side surface of the connection module 31 is shown.
  • FIG. 3 is a perspective view illustrating a configuration example of an adjustment plate 32 in FIG. 2.
  • FIG. 2 is a diagram showing an example of the operation of the array speaker device 1 of FIG. 1, and shows a case where the sound spread angle ⁇ 1 is minimized.
  • FIG. 2 is a diagram showing an example of the operation of the array speaker device 1 of FIG. 1, and shows how the sound spread angle ⁇ 1 is adjusted when the downward swing angle ⁇ 2 of the connection module 31 is 0 °.
  • FIG. 2 is a diagram showing an example of the operation of the array speaker device 1 of FIG. 1, and shows how the sound spread angle ⁇ 1 is adjusted when the downward swing angle ⁇ 2 of the connection module 31 is 3 °.
  • FIG. 6 is a perspective view showing another configuration example of the connection module 31.
  • FIG. 6 is a diagram illustrating another configuration example of the guide hole 18 for adjusting directivity provided in the side plate 12 of the speaker housing 10. It is the perspective view which showed the example of 1 structure of the array speaker apparatus 1 by Embodiment 2 of this invention. It is the figure which showed an example of operation
  • FIG. 1 is a perspective view showing a configuration example of an array speaker device 1 according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view showing a part of the array speaker device 1 of FIG.
  • an array speaker device 1 including a speaker unit 2 for a mid-low range and a connection module 31 for a high range is shown.
  • the array speaker device 1 is drawn in a state where the speaker housing 10 having an elongated shape is erected on a horizontal plane.
  • the front direction of the speaker housing 10 is referred to as the x direction
  • the direction in the horizontal plane orthogonal to the x direction is referred to as the y direction
  • the vertical direction is referred to as the z direction.
  • the array speaker device 1 is a line array speaker that emits sound waves as a linear sound source.
  • the array speaker device 1 is an assembly 3 including two or more speaker units 2, a connection module 31, and an adjustment plate 32, a speaker housing 10, and a transformer circuit.
  • the unit 17 is configured.
  • the speaker housing 10 constitutes an enclosure of the speaker unit 2 and is a cabinet to which the assembly 3 is attached.
  • the speaker housing 10 includes a front panel 11, a side plate 12, a top plate 13, a bottom plate 14, a rear panel 15, and a partition plate 16.
  • the front panel 11 is made of a common flat plate that constitutes the baffle plate of each speaker unit 2 and has a rectangular shape that is long in the z direction.
  • the front panel 11 is provided with a plurality of through holes 11a in which the diaphragm 21 of the speaker unit 2 is disposed.
  • the front panel 11 is connected to the upper part of the side plate 12 arranged on the left and right respectively.
  • the partition plate 16 is disposed to face the top plate 13 and the bottom plate 14.
  • a sealed space is formed by the front panel 11, the side plate 12, the top plate 13, the rear panel 15, and the partition plate 16, and functions as an enclosure for the speaker unit 2.
  • the side plate 12 is provided with a guide hole 18 for adjusting the directivity and inclination of the connection module 31.
  • the transformer circuit unit 17 includes, for example, an input terminal to which an acoustic signal is input from an external device, a matching transformer for impedance-converting the acoustic signal, and a distribution circuit that distributes the acoustic signal after impedance conversion to the speaker unit 2 and the connection module 31. Consists of.
  • the transformer circuit unit 17 is attached to the rear panel 15.
  • the speaker unit 2 is a speaker having excellent frequency characteristics in the middle sound range and the low sound range, and includes a diaphragm 21, a voice coil 22 that drives the diaphragm 21, and a frame 23 that holds the diaphragm 21.
  • Each speaker unit 2 is fixed to the speaker housing 10 by screwing the frame 23 to the front panel 11.
  • each speaker unit 2 is arranged in a straight line in the z direction.
  • the assembly 3 includes a connection module 31 that can change directivity and an adjustment plate 32 that adjusts the directivity and inclination of the connection module 31.
  • the connection module 31 is a speaker array whose directional characteristics are variable.
  • the adjustment plate 32 is screwed to the connection module 31 by a guide screw 9 and is attached so as to be relatively movable with respect to the connection module 31 along a long hole 7 described later. As will be described later, the adjustment plate 32 is attached to the speaker housing 10 so as to be movable in the vertical direction.
  • the assembly 3 is accommodated in the lower portion of the speaker housing 10, and the upper end of the connection module 31 is fixed to the speaker housing 10. Specifically, the assembly 3 is housed in a housing portion including the side plate 12, the bottom plate 13, the rear panel 15, and the partition plate 16. The assembly 3 is attached to the speaker housing 10 so as to be rotatable about the upper end of the connection module 31.
  • the plate position adjusting screw 19 is screwed into the adjustment plate 32 through the guide hole 18 of the side plate 12.
  • the adjustment plate 32 moves in the vertical direction and moves relative to the connection module 31, thereby changing the directivity characteristics of the connection module 31. it can. That is, the directivity characteristics of the array speaker device 1 can be changed by a simple adjustment operation of moving the adjustment plate 32 in the vertical direction.
  • the assembly 3 can be rotated about the upper end of the connection module 31 and the inclination of the connection module 31 can be changed. That is, the inclination of the connection module 31 can be changed while maintaining the shape of the connection module 31. For this reason, the directivity direction of the array speaker apparatus 1 can be tilted by a simple adjustment operation of moving the adjustment plate 32 in the front-rear direction.
  • FIG. 3 is a perspective view showing a configuration example of the connection module 31 of FIG.
  • the connection module 31 includes one baffle plate 4 and eight sound emission units 5.
  • the sound emitting unit 5 is a speaker module in which one speaker unit 51 is provided on the front surface of the housing 50 and the mounting portion 52 of the guide screw 9 is provided on the side surface of the housing 50.
  • the speaker unit 51 is a speaker with excellent frequency characteristics in the high sound range.
  • the attachment portion 52 is provided on each of the left and right side surfaces of the housing 50.
  • the connecting module 31 is a sound emitting unit assembly that is connected in a row in the vertical direction so that a plurality of such sound emitting units 5 can be bent. That is, two adjacent sound emission units 5 are connected so as to be bendable.
  • the baffle plate 4 of the speaker unit 51 in each sound emitting unit 5 is made of a common plate-like body, and constitutes connecting means for connecting the sound emitting units 5 to each other at the peripheral edge portion of the front surface thereof.
  • the number of parts can be reduced and the manufacturing cost can be reduced as compared with the conventional array speaker device in which the baffle plate is independent for each sound emitting unit 5.
  • the peripheral part of the front surface of the sound emission unit 5 is mutually connected, the shape and inclination of the connection module 31 can be changed, maintaining the space
  • each sound emitting unit 5 is connected by the baffle plate 4, the inclination of the lower sound emitting unit 5 is defined by the position of the mounting portion 52 in the front-rear direction with respect to the upper sound emitting unit. Since the directivity characteristics and directivity of the connection module 31 are determined by the inclination of each sound emitting unit 5, the front surface of the connection module 31 is formed into a curved surface so that a uniform sound pressure can be obtained over a wide area from the vicinity to the distant area. Can be propagated.
  • FIG. 4 is a perspective view showing a configuration example of the baffle plate 4 of FIG.
  • the baffle plate 4 is a thin plate-like member that is long in the vertical direction, and is made of a synthetic resin having flexibility, such as PP (polypropylene) resin.
  • the baffle plate 4 is provided with a mounting portion 41, a through hole 42 and a screw hole 43.
  • the attachment portion 41 is provided at the upper end of the baffle plate 4 and has a plurality of screw holes 41a.
  • the assembly 3 is held by the speaker housing 10 by screwing the mounting portion 41 in a state of being opposed to the lower end portion of the front panel 11.
  • the through hole 42 is formed of a substantially circular opening for arranging the diaphragm of the speaker unit 51.
  • the through hole 42 is formed for each sound emitting unit 5.
  • the screw hole 43 is a through hole for screwing the frame of the speaker unit 51 to the housing 50 via the baffle plate 4.
  • FIG. 5 is an enlarged view of a part of the connection module 31 in FIG. 3, and the left side surface of the connection module 31 is shown.
  • the speaker unit 51 is fixed to the housing 50 with the baffle plate 4 interposed therebetween by screwing screws 6 into the housing 50 via the frame of the speaker unit 51 and the baffle plate 4.
  • a guide surface 53 that is brought into contact with the adjustment plate 32 is formed on a side surface of the housing 50, and an attachment portion 52 is disposed in the guide surface 53.
  • the baffle plate 4 has a thin portion 44 with a reduced thickness.
  • the thin portion 44 is provided between two adjacent sound emission units 5 and between the attachment portion 41 and the uppermost sound emission unit 5.
  • the thin portion 44 between the two adjacent sound emitting units 5 constitutes a hinge that connects the sound emitting units 5 so that they can be bent.
  • each sound emitting unit 5 can adjust the inclination of the sound emitting units 5 adjacent to each other within a certain range.
  • the inclination of the sound emitting unit 5 is the inclination of the front surface of the housing 50 with respect to the vertical direction, and corresponds to the inclination angle between the front direction of the speaker housing 10 and the direction of the sound emitting unit 5.
  • the mounting portion 41 becomes a fixed end in a state where the mounting portion 41 is screwed to the front panel 11, and this The assembly 3 can be rotated with respect to the speaker housing 10 around the attachment portion 41.
  • FIG. 6 is a perspective view showing a configuration example of the adjustment plate 32 of FIG.
  • the adjustment plate 32 is attached to the connection module 31 so as to be movable in the vertical direction, and is an inclination adjustment member that determines the inclination of each sound emitting unit 5 depending on the relative position with respect to the connection module 31.
  • the adjustment plate 32 includes a left plate 321, a right plate 322, and a connection plate 323.
  • Both the left plate 321 and the right plate 322 are thin plate-like members that are long in the vertical direction, and are made of a metal that has rigidity and is easily drilled or bent, such as stainless steel.
  • the connecting plate 323 is a thin plate-like member that connects these plates with the left plate 321 and the right plate 322 facing each other.
  • the left plate 321 and the right plate 322 are provided with an inclination adjusting long hole 7 into which the guide screw 9 screwed into the mounting portion 52 of the sound emitting unit 5 is engaged, and the mounting portion 8 of the plate position adjusting screw 19. And are provided.
  • the guide screw 9 screwed into the mounting portion 52 is an engaging member that is engaged with the adjustment plate 32, and includes a protruding portion that protrudes from the side surface of the sound emitting unit 5.
  • the elongated hole 7 is a through hole, and is an engaging guide that restrains the guide screw 9 of the sound emitting unit 5 so as to move on a predetermined line orbit on the adjustment plate 32. That is, the long hole 7 moves the guide screw 9 along the long hole 7 without being detached from the linear track by engaging the guide screw 9.
  • the linear track of the long hole 7 has an inclination in the vertical direction, and the guide screw 9 moves in the front-rear direction when the adjustment plate 32 is moved in the vertical direction.
  • the long hole 7 is provided for each sound emitting unit 5.
  • the assembly 3 is formed by screwing the guide screw 9 to the mounting portion 52 through the long hole 7 in a state where the connection module 31 is sandwiched between the left plate 321 and the right plate 322.
  • Such an assembly 3 is housed in the speaker housing 10, the mounting portion 41 of the connection module 31 is screwed to the front panel 11, and the plate position adjusting screw 19 is adjusted via the guide hole 18. It is screwed to 32 attachment portions 8.
  • FIG. 7 is a diagram showing an example of the operation of the connection module 31 to which the adjustment plate 32 is attached, and shows the case where the adjustment plate 32 is moved to the upper limit position and the sound spread angle ⁇ 1 is maximized. Yes.
  • the left side surfaces of the connection module 31 and the adjustment plate 32 are drawn with the front direction of the speaker housing 10, that is, the x direction upward.
  • the adjusting plate 32 is attached to the connection module 31 by screwing the guide screw 9 into the mounting portion 52 of the sound emitting unit 5 through the long hole 7 for the eight sound emitting units 5.
  • the guide screw 9 screwed into the mounting portion 52 is engaged with the long hole 7.
  • the positions of the mounting portion 52 and the guide screw 9 on the sound emitting unit 5 are common to the sound emitting units 5.
  • the position of the long hole 7 and the inclination with respect to the z direction are different for each sound emitting unit 5.
  • Each elongated hole 7 is determined in advance so that the shape of the connection module 31 is changed by the movement of the adjustment plate 32 in the z direction. With such a configuration, if the adjustment plate 32 is moved in the z direction, two or more sound emission units 5 can be changed simultaneously, and the shape of the connection module 31 can be changed.
  • each elongated hole 7 is formed so that the sound emitting unit 5 farther from the attachment portion 41 of the connection module 31 has a larger inclination.
  • Each sound emitting unit 5 is arranged along a predetermined curve whose inclination increases as the distance from the mounting portion 41 in the z direction increases. That is, each sound emitting unit 5 is arranged such that the direction of the sound emitting unit 5 coincides with the normal direction of the curve.
  • each sound emitting unit 5 is arranged along a clothoid curve CC in which the curvature (the curvature is 1 / R if the radius of curvature is R) is proportional to the distance L on the curve from the starting point.
  • each sound emitting unit 5 By arranging each sound emitting unit 5 along the clothoid curve CC, the shape of the front surface of the connection module 31 is substantially matched to the clothoid curve CC, and the energy of the sound is distributed mainly in the x direction, and in the z direction.
  • Directional characteristics that diffuse sound in a negative direction can be obtained.
  • a sound wave having a uniform sound pressure can be propagated in a wide area from the vicinity to a distant area, and the range (cover area) covered as the listening area is changed by moving the adjustment plate 32 in the z direction. can do. For example, by increasing the divergence angle theta 1, it can be expanded coverage area more to the vicinity.
  • the inclination angle of the sound emitting unit NE is The angle of inclination of the sound emission unit FE is the largest.
  • the sound emitting unit 5 and the long hole 7 are inclined in the same direction.
  • the expansion angle ⁇ 1 is set as compared with the case where the sound emitting unit 5 and the long hole 7 are inclined in the opposite direction.
  • the adjustment plate 32 can be formed so that the front end surface of the adjustment plate 32 does not protrude from the front surface of the connection module 31 when maximized.
  • the inclination angle of the sound emitting unit FE is each sound unit 5 shows the spread of sound relative to the case of arranging toward the x direction will be referred to as divergence angle theta 1.
  • divergence angle theta 1 In the array speaker apparatus 1, by moving the adjustment plate 32 in the z-direction, the inclination angle of each sound unit 5 is changed at the same time, it is possible to change the spread angle theta 1.
  • each elongated hole 7 is provided with the inclination of the line trajectory different for each sound emitting unit 5 so that the clothoid parameter A of the clothoid curve CC is changed by the movement of the adjustment plate 32 in the z direction. If comprised in this way, a cover area can be adjusted by moving the adjustment plate 32 and changing the sound spread angle
  • FIG. 8 is a diagram showing an example of the operation of the connection module 31 to which the adjustment plate 32 is attached, and shows a case where the adjustment plate 32 is moved in the z direction with respect to the speaker housing 10.
  • the positional relationship between the sound emitting unit FE and the long hole 7 when the adjustment plate 32 is moved between the upper limit position and the lower limit position is shown.
  • the sound output unit 5 is located on a predetermined clothoid curve CC 1, divergence angle theta 1 is at a minimum.
  • the guide screw 9 screwed into the mounting portion 52 of the sound emitting unit FE is located at the upper end of the long hole 7, that is, the end portion closer to the mounting portion 41.
  • the sound output unit 5 different clothoid parameter A than the clothoid curve CC 1, on clothoid curve CC 2 is larger curvature than clothoid curve CC 1 To position.
  • the guide screw 9 screwed into the mounting portion 52 of the sound emitting unit FE is located at the center of the long hole 7.
  • the sound output unit 5 different clothoid parameter A than the clothoid curve CC 1 and CC 2, located on the clothoid curve CC 3 is larger curvature than clothoid curve CC 2,
  • the spread angle ⁇ 1 is the maximum.
  • the guide screw 9 screwed into the mounting portion 52 of the sound emitting unit FE is located at the lower end of the long hole 7, that is, the end portion far from the mounting portion 41.
  • the guide screw 9 is biased in the negative x direction by the drag from the inclined inner wall surface of the elongated hole 7. Can move to the lower end side of the long hole 7 to increase the spread angle ⁇ 1 .
  • the guide screw 9 is biased in the positive direction of the x direction, so that the guide screw 9 moves to the upper end side of the elongated hole 7 and expands. it is possible to reduce the angle theta 1.
  • each guide screw 9 By screwing each guide screw 9 to the mounting portion 52 of the sound emission unit 5 with the adjustment plate 32 interposed therebetween, the movement of the sound emission unit 5 in the y direction is restricted by the adjustment plate 32. Further, when the guide screw 9 is engaged with the long hole 7, the movement of the guide screw 9 in a direction intersecting with the longitudinal direction of the long hole 7 is restricted. For this reason, if the adjustment plate 32 is moved between the upper limit position and the lower limit position, the guide screw 9 moves along the elongated hole 7, and the mounting portion 52 of the sound emitting unit FE and the guide screw 9 are moved in the front-rear direction. That is, it moves in the x direction.
  • Figure 9 is a diagram illustrating an example of operation of the array speaker apparatus 1 of FIG. 1, when the divergence angle theta 1 of moving the adjustment plate 32 to the lower limit position sound minimum is shown.
  • the left side surface of the speaker housing 10 is shown.
  • the guide hole 18 provided in the side plate 12 of the speaker housing 10 includes a through hole that engages with a plate position adjusting screw 19 screwed into the mounting portion 8 of the adjusting plate 32.
  • the guide hole 18 has an inverted U-shape, and includes a first straight portion 18a formed on the front side, a second straight portion 18b formed on the rear side, and an inclined portion connecting these straight portions 18a and 18b. 18c.
  • Each of the first straight portion 18a and the second straight portion 18b is a long hole extending in the vertical direction.
  • the inclined portion 18c is a long hole that communicates the end portion closer to the mounting portion 41 of the first linear portion 18a and the end portion closer to the mounting portion 41 of the second linear portion 18b.
  • the downward swing angle ⁇ 2 is an inclination angle indicating the inclination of the connection module 31 with respect to the front direction of the speaker housing 10.
  • the downward swing angle ⁇ 2 is expressed as an angle between the front direction D of the uppermost sound emission unit 5 of the connection module 31 and the front direction of the speaker housing 10, and has two stages of 0 ° and 3 °. Can be adjusted.
  • FIG. 10 is a diagram illustrating an example of the operation of the array speaker device 1 of FIG. 1, and when the downward swing angle ⁇ 2 of the connection module 31 is 0 °, the sound spread angle ⁇ 1 is adjusted in five steps. The state of doing is shown.
  • (a) ⁇ (e) in the figure the deflection degree of the connection module 31 when changing the divergence angle theta 1 by 5 ° is shown.
  • the front direction D ⁇ b> 1 of the uppermost sound emission unit 5 substantially coincides with the front direction of the speaker housing 10.
  • the plate position adjusting screw 19 is moved along a first straight portion of the guide hole 18, the adjustment plate 32 is moved in the vertical direction, to adjust the divergence angle theta 1 in the range of 10 ° ⁇ 30 ° Can do.
  • FIG. 11 is a diagram showing an example of the operation of the array speaker device 1 of FIG. 1, and the sound spread angle ⁇ 1 is adjusted in five steps when the downward swing angle ⁇ 2 of the connection module 31 is 3 °. The situation is shown.
  • (f) ⁇ (j) in the figure the deflection degree of the connection module 31 when changing the divergence angle theta 1 by 5 ° is shown.
  • the downward swing angle ⁇ 2 is an angle between the front direction D2 of the uppermost sound emitting unit 5 and the front direction D1 of the speaker housing 10.
  • the plate position adjusting screw 19 by moving along the second straight portion of the guide hole 18, the spread angle theta 1 can be adjusted within the range of 10 ° ⁇ 30 °. In this case, the reproduction sound of the connection module 31 can be diffused downward while propagating the reproduction sound of the speaker unit 2 in the x direction.
  • the sound emitting units 5 are connected in a line in the vertical direction, and the upper end is fixed to the speaker housing 10. For this reason, if the adjustment plate 32 is moved in the vertical direction, the guide screw 9 of each sound emitting unit 5 moves in the front-rear direction in accordance with the line trajectory of the long hole 7 having an inclination in the vertical direction.
  • the sound emitting units 5 are supported so as to be rotatable about the guide screws 9 and are connected to each other so that they can be bent. For this reason, if the position of the guide screw 9 of each sound emitting unit 5 is determined, the position and inclination of each sound emitting unit 5 are uniquely determined, and the shape and inclination of the connection module 31 are also determined.
  • the adjustment plate 31 is moved in the vertical direction, the guide screw 9 of each sound emitting unit 5 is moved in the front-rear direction in accordance with the line trajectory of the long hole 7, and the shape and inclination of the connection module 31 change.
  • the directivity characteristics of the array speaker device 1 can be changed.
  • the adjustment plate 32 By adopting such a configuration, if the adjustment plate 32 is moved in the vertical direction, the positions and inclinations of two or more sound emission units 5 can be changed simultaneously, and the shape and inclination of the connection module 31 can be changed. it can. Therefore, the directivity characteristics of the array speaker device 1 can be changed by a simple adjustment operation of moving the adjustment plate 32.
  • the engaging member of the sound emitting unit 5 as a projection and the engaging member guide of the adjusting plate 32 as the long hole 7, the engaging guide is formed by drilling the adjusting plate 32.
  • the array speaker device 1 can be easily manufactured and provided at low cost.
  • the long hole 7 formed of a through hole is provided on the adjustment plate 32 as an engagement guide that restrains the engagement element (guide screw 9) of the sound emitting unit 5 .
  • the present invention does not limit the configuration of the engaging guide.
  • the long hole 7 may be a groove whose cut surface is a concave shape when cut along a plane intersecting the longitudinal direction.
  • the engaging element engaged with the adjustment plate 32 may be a protruding portion formed by protruding a part of the housing 50 of the sound emitting unit 5.
  • the sound emitting unit 5 is provided with an engaging member (guide screw 9) and the adjusting plate 32 is provided with an engaging member guide for restraining the engaging member
  • the invention does not limit the configurations of the sound emitting unit 5 and the adjustment plate 32 to this.
  • the adjustment plate 32 is provided with an engaging member that is engaged with the sound emitting unit 5.
  • the sound emitting unit 5 is provided with a speaker unit 51 on the front surface, and an engaging member guide for restraining the engaging member of the adjustment plate 32 so as to move on a predetermined line orbit on the sound emitting unit 5. Is provided on the side. Even with such a configuration, the directivity of the array speaker device 1 can be changed by a simple adjustment operation of moving the adjustment plate 32 in the vertical direction.
  • connection module 31 in which one speaker unit 51 is provided in each sound emitting unit 5 has been described, but the present invention does not limit the configuration of the connection module 31 to this.
  • the connection module 31 may be configured by providing one or more speaker units 51 in each sound emitting unit 5.
  • FIG. 12 is a perspective view showing another configuration example of the connection module 31.
  • the connection module 31 includes one baffle plate 4 and three sound emission units 5.
  • the sound emitting unit 5 is provided with two speaker units 51 and a mounting portion 52 for the guide screw 9.
  • Each speaker unit 51 is attached to the front surface of the housing 50 in the same direction.
  • the present invention has a configuration of the guide hole 18 for adjusting the directivity. It is not limited to.
  • FIG. 13 is a diagram showing another configuration example of the guide hole 18 for adjusting the directivity provided in the side plate 12 of the speaker housing 10.
  • (A) in the drawing shows a case where the guide hole 18 is U-shaped.
  • the guide hole 18 includes a first straight portion 18a formed on the front side, a second straight portion 18b formed on the rear side, and an inclined portion 18c that connects these straight portions 18a and 18b.
  • the first linear portion 18a and the second linear portion 18b, counterbore 18d for adjusting the divergence angle theta 1 in five stages by 5 ° is formed.
  • the inclined portion 18c communicates the end far from the mounting portion 41 of the first straight portion 18a and the end far from the mounting portion 41 of the second straight portion 18b. Even in such a configuration, by moving the plate position adjusting screw 19 along the inclined portion 18c, the connecting module 31 and the adjusting plate 32 are rotated about the mounting portion 41 of the connecting module 31, and the downward swing angle.
  • ⁇ 2 can be adjusted in two steps of 0 ° and 3 °.
  • (B) in the drawing shows a case where the guide hole 18 includes a first straight portion 18a and two or more inclined portions 18c.
  • the guide hole 18 includes a first straight portion 18 a formed on the front side and five inclined portions 18 c extending in the circumferential direction with the attachment portion 41 as the center.
  • Each inclined portion 18c is provided corresponding to the adjustment steps for divergence angle theta 1.
  • the downward swing angle ⁇ 2 can be adjusted in two steps of 0 ° and 3 ° for each adjustment step of the spread angle ⁇ 1 .
  • the present invention is applied to a speaker system including the speaker unit 2 for middle and low sound range and the speaker unit 51 for high sound range.
  • the configuration of 1 is not limited to this.
  • the present invention can be applied to a speaker system including only a full-range speaker unit.
  • the present invention can also be applied to a speaker system in which the connection module 31 for the high sound range is arranged on the upper stage of the speaker housing 10 and the speaker unit 2 for the middle / low sound range is arranged on the lower stage. Further, the present invention is also applied to a speaker system in which the connection module 31 for the high sound range is disposed in each of the upper and lower stages of the speaker housing 10 and the middle and low sound range speaker unit 2 is disposed in the middle of the speaker housing 10. can do.
  • the upper connection module 31 has a lower end attached to the speaker housing 10, and the sound emitting units 5 are arranged such that the inclination of the sound emitting unit 5 arranged above becomes larger. According to such a speaker system, sound can be diffused upward and downward in the vertical direction.
  • the present invention does not limit the configuration of the adjustment plate 32 to this. Absent.
  • the linear track of the engaging guide may be determined so that the inclination of the connecting module 31 is changed by the vertical movement of the adjustment plate 32.
  • each sound emitting unit 5 is arranged along the clothoid curve CC
  • the present invention is not limited to this.
  • the configuration may be such that each sound emitting unit 5 is arranged along an arc having a constant curvature.
  • connection module 31 is accommodated in the speaker housing 10 as a holder
  • the present invention is also applied to a device that does not include such a speaker housing 10. be able to.
  • FIG. 14 is a perspective view showing a configuration example of the array speaker device 1 according to the second embodiment of the present invention.
  • (A) in the drawing shows the front surface of the array speaker device 1 in which the upper end of the connection module 31 is fixed to the rigging frame 60, and (b) shows the back surface of the array speaker device 1.
  • the array speaker device 1 includes an assembly 3 including a connection module 31 and an adjustment plate 32, and a rigging frame 60 for suspending the assembly 3 on a ceiling or the like.
  • the rigging frame 60 is a holding bracket for holding the assembly 3 and is provided with an attachment portion 61 for attaching a wire cable or the like for suspension.
  • the adjustment plate 32 is attached to the connection module 31 using the guide screw 9 and can be moved in the vertical direction with respect to the connection module 31.
  • the adjustment plate 32 is provided with a handle 324 that is used when the adjustment plate 32 is moved in the vertical direction with respect to the connection module 31.
  • the handle 324 is formed of a rod-like body that connects the left and right plates, and is provided at the lower end of the adjustment plate 32. By moving the adjustment plate 32 relative to the connection module 31 using the handle 324, the directivity characteristics of the connection module 31 can be changed.
  • FIG. 15 is a diagram showing an example of the operation of the array speaker device 1 of FIG. 14, and shows how the sound spread angle is adjusted.
  • the left side surface of the array speaker device 1 is shown, and (a) to (e) in the figure show how the connecting module 31 bends when the sound spread angle is changed in five stages. Yes.
  • each sound emitting unit 5 of the connection module 31 moves in the front-rear direction, and the shape of the connection module 31 can be changed.
  • FIG. 16 is a perspective view showing a configuration example of the array speaker device 1 according to the third embodiment of the present invention.
  • the array speaker device 1 includes an assembly 3 including a connection module 31 and an adjustment plate 32, and a speaker stand 70 for holding the assembly 3 at a certain height from the floor or the like.
  • the speaker stand 70 includes a pole 71 to which the assembly 3 is attached and three legs 72 that support the ball 71 in a vertical state.
  • FIG. 17 is a perspective view showing a configuration example of the assembly 3 in FIG. 16, (a) in FIG. 16 shows the back of the assembly 3, and (b) shows the front of the assembly 3. It is shown.
  • the adjustment plate 32 is attached to the connection module 31 using the guide screw 9.
  • the adjustment plate 32 is provided with an attachment portion 325 for attaching to the pole 71.
  • the mounting portion 325 is provided at the lower end portion of the adjustment plate 32.
  • the adjustment plate 32 By attaching the attachment portion 325 to the pole 71, the adjustment plate 32 is fixed to the speaker stand 70, and can be held at a certain height from the floor surface in a state where the assembly 3 is erected. Further, by moving the connection module 31 relative to the adjustment plate 32, the directivity characteristics of the connection module 31 can be changed. In this manner, a holder that fixes the adjustment plate 32 can be used instead of the holder that fixes the connection module 31. By moving the connection module 31 relative to the adjustment plate 32, the directivity characteristics of the connection module 31 can be changed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Le but de l'invention est de fournir un dispositif de haut-parleurs en réseau capable de changer, par des ajustements simples, les caractéristiques directionnelles d'un système de haut-parleurs comprenant deux unités émettrices de son ou plus. Ainsi, le dispositif de haut-parleurs en réseau comprend un module de couplage (31) dans lequel deux unités émettrices de son (5) ou plus sont couplées verticalement sous forme de colonne de sorte que les deux unités émettrices de son (5) ou plus puissent être courbées, et une plaque d'ajustement (32) fixée verticalement et mobile par rapport au module de couplage (31). Les unités émettrices de son (5) comprennent une unité haut-parleur (51) sur leur face avant et un élément de contact (vis de guidage (9)) entrant en contact avec la plaque d'ajustement (32) sur une face latérale des unités émettrices de son (5). La plaque d'ajustement (32) comprend un guide d'élément de contact (trou oblong (7)) afin de restreindre l'élément de contact de sorte que l'élément de contact se déplace le long d'une trajectoire linéaire prédéterminée sur la plaque d'ajustement (32). La trajectoire linéaire est inclinée de côté par rapport à la direction verticale, l'élément de contact étant déplacé longitudinalement par un mouvement relatif du module de couplage (31) et de la plaque d'ajustement (32).
PCT/JP2013/065974 2013-06-10 2013-06-10 Système de haut-parleurs en réseau Ceased WO2014199429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/065974 WO2014199429A1 (fr) 2013-06-10 2013-06-10 Système de haut-parleurs en réseau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/065974 WO2014199429A1 (fr) 2013-06-10 2013-06-10 Système de haut-parleurs en réseau

Publications (1)

Publication Number Publication Date
WO2014199429A1 true WO2014199429A1 (fr) 2014-12-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019145907A (ja) * 2018-02-16 2019-08-29 Toa株式会社 ユニット連結部材、スピーカーユニット、及びアレイスピーカー
CN110650386A (zh) * 2019-09-10 2020-01-03 河北美亚电声科技有限公司 一种用于音响工程的线阵列全频音柱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5074331U (fr) * 1973-11-05 1975-06-28
JPS58182991A (ja) * 1982-04-21 1983-10-26 Matsushita Electric Ind Co Ltd スピ−カシステム
JPS63192797U (fr) * 1987-05-29 1988-12-12
JPH02113493U (fr) * 1989-02-28 1990-09-11
JP2006020257A (ja) * 2004-05-31 2006-01-19 Toa Corp スピーカシステム及びスピーカクラスターシステム
JP2011023783A (ja) * 2009-07-13 2011-02-03 Pioneer Electronic Corp 音響装置およびその音響装置を備えた電子機器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5074331U (fr) * 1973-11-05 1975-06-28
JPS58182991A (ja) * 1982-04-21 1983-10-26 Matsushita Electric Ind Co Ltd スピ−カシステム
JPS63192797U (fr) * 1987-05-29 1988-12-12
JPH02113493U (fr) * 1989-02-28 1990-09-11
JP2006020257A (ja) * 2004-05-31 2006-01-19 Toa Corp スピーカシステム及びスピーカクラスターシステム
JP2011023783A (ja) * 2009-07-13 2011-02-03 Pioneer Electronic Corp 音響装置およびその音響装置を備えた電子機器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019145907A (ja) * 2018-02-16 2019-08-29 Toa株式会社 ユニット連結部材、スピーカーユニット、及びアレイスピーカー
CN110650386A (zh) * 2019-09-10 2020-01-03 河北美亚电声科技有限公司 一种用于音响工程的线阵列全频音柱

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