WO2016181346A1 - Громкоговоритель - Google Patents
Громкоговоритель Download PDFInfo
- Publication number
- WO2016181346A1 WO2016181346A1 PCT/IB2016/052746 IB2016052746W WO2016181346A1 WO 2016181346 A1 WO2016181346 A1 WO 2016181346A1 IB 2016052746 W IB2016052746 W IB 2016052746W WO 2016181346 A1 WO2016181346 A1 WO 2016181346A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radiating
- heads
- loudspeaker
- frequency
- frequency range
- 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
Links
Classifications
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
- H04R3/14—Cross-over networks
Definitions
- the invention relates to the field of sound reproducing devices, and more particularly to loudspeakers. State of the art
- loudspeakers is low sensitivity, large phase distortion and uneven angular acoustic power.
- a device is known, described in US patent N ° 6801631 (DONALD J. NORTH), which uses four low-frequency radiating heads located in the corners of the square and an additional head of a higher frequency range located between them.
- the device comprises at least one high-frequency radiating head and several low-frequency heads located in the same plane symmetrically with respect to the high-frequency head.
- the objective of the invention is to reduce the unevenness of angular acoustic power and improve the sound quality of the speaker.
- Other objects of the invention are to reduce the number of bands
- the technical result is achieved by the fact that in a loudspeaker containing at least three first radiating heads configured to emit radiation in the first frequency range, and at least one second
- a radiating head configured to emit in the second frequency range, the first radiating heads are located in
- the second radiating head is located near the geometric center of the specified virtual polygon, while the first radiating heads have conical diffusers, oriented with a convex side or tapering end in the direction the listener, and the radiation axes of the first emitting heads are inclined at an angle (a) to the perpendicular drawn through the center of the specified polygon olnik, where the magnitude of the angle (a) is in the range from 5 to 25 degrees.
- This arrangement of low-frequency radiating heads firstly, allows to bring their acoustic centers closer together.
- the convergence of the acoustic centers of the radiating heads makes it possible to increase the cross-section frequency, reduce distortion of the angular power and increase the acoustic load on the diffuser. Increase
- acoustic load on the diffuser leads to suppression of high-frequency components of the signal, which makes it possible to use first-order filters when dividing the signal into frequency ranges, which, in turn, reduces the phase distortions introduced by the filters.
- this arrangement of the emitting heads brings the loudspeaker radiation closer to the radiation of a point source, which contributes to the uniformity of characteristics in all directions. It is desirable that the number of first radiating heads is equal to three, or, more advantageously, four. With so many emitting heads, their acoustic the centers are close enough to each other so that the radiation
- the loudspeaker was close to the radiation of a point source, which helps to improve the uniformity of the spatial characteristics of the radiation.
- the radiation axes of the first radiating heads are directed at one point. This improves the concentration of sound waves and reduces signal distortion.
- the upper limit of the first frequency range does not exceed 1 000 Hz.
- the lower limit of the second frequency range is selected from 400 Hz and above.
- the interface between the frequency ranges is in the range from 400 to 800 Hz and minimally affects hearing.
- FIG. 1 shows a general view of a speaker.
- FIG. 2 is a side view.
- FIG. 3 is a front view.
- FIG. 4 is a schematic illustration of a traditional loudspeaker.
- FIG. 5 shows a schematic representation of the proposed speaker.
- FIG. 6 shows the frequency response of a traditional loudspeaker.
- FIG. 7 shows the frequency response of the proposed speaker.
- FIG. 8 shows an embodiment of a speaker.
- the loudspeaker shown in FIG. 1-3 contains four low-frequency radiating heads (11) with a diameter of 46 cm. Radiating heads are mounted on a rigid frame (12) closely to each other and are inclined at an angle of 12 degrees to to the center of the speaker. In the space between the low-frequency radiating heads (11), a broadband radiating head (13) is installed.
- Low-frequency radiating heads (11) have conical diffusers (14) oriented with a convex side in the direction of the listener.
- the loudspeaker is a directional acoustic system.
- the loudspeaker uses low-frequency radiating heads with conical diffusers.
- the acoustic center (15) or the center of radiation, as a rule is located inside the cone of the diffuser, near its narrow part, at a often significant distance from the aperture of the diffuser — the wide open end of the cone.
- the acoustic center (15) is located behind the aperture. Therefore, when the radiating heads are tilted so that their radiation axes are directed toward the listener, the distance between the acoustic centers (15) increases.
- the pressure level at low frequencies below 40 Hz also depends on the diameter of the diffuser. In the design, it is advisable to use radiating heads with a diameter of 16 cm or more.
- Such an arrangement of low-frequency radiating heads (11) makes it possible to bring their acoustic centers closer together (15).
- the convergence of the acoustic centers of the radiating heads (11) makes it possible to increase the cross-section frequency and reduce the angular power distortion and increase the acoustic load on the diffuser.
- acoustic load on the diffuser leads to the suppression of high-frequency components of the signal, which makes it possible to use filters in the crossover first order, which in turn reduces the phase distortion introduced by the filters.
- the proposed loudspeaker operates as follows.
- the reproduced signal passes through an active crossover with a crossover frequency of 500 Hz, is amplified and fed to the corresponding emitting heads.
- FIG. 5 shows a schematic representation of the proposed speaker without a high-frequency radiating head
- FIG. 4 schematically depicts a traditional design containing the same four low-frequency radiating heads mounted in the same plane without tilting to the center.
- the minimum possible distance between the acoustic centers of the heads is equal to the diameter of the radiating head.
- FIG. 6 and 7 show the frequency response measured at an angle of 35 degrees from the axis
- the frequency response of the proposed speaker is more uniform in the upper part of the range. Increasing the frequency response uniformity reduces the number of loudspeaker bands and promotes smoother matching of the frequency ranges of the emitting heads.
- a more uniform angular frequency response allows the use of large-sized radiating heads in such a design, which makes it possible to increase the volumetric displacement of the entire loudspeaker, its sensitivity and acoustic power.
- This arrangement of the emitting heads brings the loudspeaker radiation closer to the radiation of a point source, which contributes to the uniformity of characteristics in all directions.
- the low-frequency radiating heads differs from the loudspeaker shown in FIG. 1-3, only the number of low-frequency heads.
- loudspeakers with three radiating heads their acoustic centers are closer to each other than in a loudspeaker with four, which improves the spatial characteristics of the loudspeaker, but its radiation power at low frequencies decreases slightly.
- the invention can be used both for playing sound at home and in sound studios.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Circuit For Audible Band Transducer (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL16792286.3T PL3306953T3 (pl) | 2015-05-14 | 2016-05-12 | Głośnik |
| US15/571,882 US10237643B2 (en) | 2015-05-14 | 2016-05-12 | Loudspeaker |
| JP2018511538A JP6872252B2 (ja) | 2015-05-14 | 2016-05-12 | ラウドスピーカ |
| EP16792286.3A EP3306953B1 (en) | 2015-05-14 | 2016-05-12 | Loudspeaker |
| CN201680027859.9A CN107615781B (zh) | 2015-05-14 | 2016-05-12 | 扬声器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2015118053A RU2612535C2 (ru) | 2015-05-14 | 2015-05-14 | Громкоговоритель |
| RU2015118053 | 2015-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016181346A1 true WO2016181346A1 (ru) | 2016-11-17 |
Family
ID=57247802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2016/052746 Ceased WO2016181346A1 (ru) | 2015-05-14 | 2016-05-12 | Громкоговоритель |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10237643B2 (ru) |
| EP (1) | EP3306953B1 (ru) |
| JP (1) | JP6872252B2 (ru) |
| CN (1) | CN107615781B (ru) |
| PL (1) | PL3306953T3 (ru) |
| RU (1) | RU2612535C2 (ru) |
| WO (1) | WO2016181346A1 (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209472747U (zh) * | 2018-07-09 | 2019-10-08 | 宁波东源音响器材有限公司 | 一种多角度覆盖的双向阵列音箱 |
| TWM610874U (zh) * | 2020-12-14 | 2021-04-21 | 茂宇科技股份有限公司 | 同軸駐極體揚聲器 |
| IT202200002666A1 (it) | 2022-02-14 | 2023-08-14 | Luca Corso | Nuovo diffusore di suoni caratterizzato da una configurazione adattabile e aggiornabile nel tempo da parte di un utente |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243840A (en) * | 1978-12-22 | 1981-01-06 | Teledyne Industries, Inc. | Loudspeaker system |
| US4885782A (en) * | 1987-05-29 | 1989-12-05 | Howard Krausse | Single and double symmetric loudspeaker driver configurations |
| US20020191807A1 (en) * | 1998-01-16 | 2002-12-19 | Sony Corporation | Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein |
| US20080044044A1 (en) * | 2004-05-14 | 2008-02-21 | Madaffari Peter L | Dual Diaphragm Electroacoustic Transducer |
| US20120269368A1 (en) * | 2004-02-02 | 2012-10-25 | Harman International Industries, Incorporated | Loudspeaker array system |
| EP2701401A2 (en) * | 2012-08-24 | 2014-02-26 | Cheng Yih Jenq | Loudspeaker driver with dual electromagnet assemblies |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4719027U (ru) * | 1971-04-06 | 1972-11-02 | ||
| US3931867A (en) * | 1975-02-12 | 1976-01-13 | Electrostatic Research Corporation | Wide range speaker system |
| US4165797A (en) * | 1977-06-06 | 1979-08-28 | Mack Spetalnik | Adjustable high frequency sound dispersion system |
| JPS5474417A (en) * | 1977-11-26 | 1979-06-14 | Sony Corp | Multi-point driving type speaker |
| JPS5525285A (en) * | 1978-08-14 | 1980-02-22 | Sony Corp | Speaker |
| US4227051A (en) * | 1979-02-26 | 1980-10-07 | Thomas Wayne W | Loud speaker and enclosure system |
| US4984278A (en) * | 1988-07-25 | 1991-01-08 | Electro-Voice, Inc. | Adjustable mount for a loudspeaker |
| GB9506263D0 (en) * | 1995-03-28 | 1995-05-17 | Sse Hire Limited | Loudspeaker system |
| JPH0970092A (ja) * | 1995-09-01 | 1997-03-11 | Saalogic:Kk | 点音源・無指向性・スピ−カシステム |
| CN1247045C (zh) | 1997-10-10 | 2006-03-22 | 三星电子株式会社 | 万向扬声器系统 |
| US6801631B1 (en) * | 1999-10-22 | 2004-10-05 | Donald J. North | Speaker system with multiple transducers positioned in a plane for optimum acoustic radiation pattern |
| US6961438B1 (en) * | 1999-12-20 | 2005-11-01 | Globo Technology, Inc. | Loudspeaker system having wide-directional characteristics |
| JP2004072140A (ja) * | 2002-08-01 | 2004-03-04 | Hiroshi China | 全指向性バックロードホーン型スピーカー |
| JP4656520B2 (ja) * | 2005-12-28 | 2011-03-23 | 日本ビクター株式会社 | 反射型電気音響変換器 |
| JP4839890B2 (ja) * | 2006-02-28 | 2011-12-21 | ヤマハ株式会社 | 広指向性スピーカシステム |
| US8175304B1 (en) * | 2008-02-12 | 2012-05-08 | North Donald J | Compact loudspeaker system |
| JP2011018998A (ja) * | 2009-07-07 | 2011-01-27 | Manhei Tsurubayashi | スピーカシステム及びそれに用いられるエンクロージャー |
| US8917881B2 (en) * | 2010-01-26 | 2014-12-23 | Cheng Yih Jenq | Enclosure-less loudspeaker system |
| US8249268B2 (en) * | 2010-01-26 | 2012-08-21 | Cheng Yih Jenq | Woofer-less and enclosure-less loudspeaker system |
| EP2591617B1 (en) * | 2010-07-09 | 2014-06-18 | Bang & Olufsen A/S | Adaptive sound field control |
-
2015
- 2015-05-14 RU RU2015118053A patent/RU2612535C2/ru active
-
2016
- 2016-05-12 WO PCT/IB2016/052746 patent/WO2016181346A1/ru not_active Ceased
- 2016-05-12 CN CN201680027859.9A patent/CN107615781B/zh not_active Expired - Fee Related
- 2016-05-12 JP JP2018511538A patent/JP6872252B2/ja not_active Expired - Fee Related
- 2016-05-12 PL PL16792286.3T patent/PL3306953T3/pl unknown
- 2016-05-12 US US15/571,882 patent/US10237643B2/en active Active
- 2016-05-12 EP EP16792286.3A patent/EP3306953B1/en not_active Not-in-force
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243840A (en) * | 1978-12-22 | 1981-01-06 | Teledyne Industries, Inc. | Loudspeaker system |
| US4885782A (en) * | 1987-05-29 | 1989-12-05 | Howard Krausse | Single and double symmetric loudspeaker driver configurations |
| US20020191807A1 (en) * | 1998-01-16 | 2002-12-19 | Sony Corporation | Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein |
| US20120269368A1 (en) * | 2004-02-02 | 2012-10-25 | Harman International Industries, Incorporated | Loudspeaker array system |
| US20080044044A1 (en) * | 2004-05-14 | 2008-02-21 | Madaffari Peter L | Dual Diaphragm Electroacoustic Transducer |
| EP2701401A2 (en) * | 2012-08-24 | 2014-02-26 | Cheng Yih Jenq | Loudspeaker driver with dual electromagnet assemblies |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3306953A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018516032A (ja) | 2018-06-14 |
| CN107615781B (zh) | 2020-09-18 |
| JP6872252B2 (ja) | 2021-05-19 |
| US20180124500A1 (en) | 2018-05-03 |
| US10237643B2 (en) | 2019-03-19 |
| PL3306953T3 (pl) | 2022-09-05 |
| EP3306953A4 (en) | 2019-03-06 |
| RU2612535C2 (ru) | 2017-03-09 |
| EP3306953B1 (en) | 2022-03-30 |
| RU2015118053A (ru) | 2016-12-10 |
| CN107615781A (zh) | 2018-01-19 |
| EP3306953A1 (en) | 2018-04-11 |
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