JPH08331690A - Speaker, speaker device, and method for manufacturing speaker device - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize a speaker and a speaker device with flattened characteristics in all bands. In a speaker provided with a cone paper functioning as a vibrating section and a round edge 21 provided on the outer periphery of the cone paper, the round edge 21 has a corrugation portion 23 in the center and a first corrugation portion outside the corrugation portion 23. A round part 21 and a second round part 22 inside the corrugation part 23 are provided, and the distance between the outer peripheral end of the first round part 21 and the corrugation part 23 and the inner peripheral end of the second round part 22. And the distance of the corrugation unit 23 is selected to cause a dip in the sound region of the output sound pressure frequency characteristic. [Effect] The sound pressure rise due to resonance when attached to a speaker box with a recessed portion eliminates the dip intentionally formed by the edge, and allows a flat characteristic, and at the same time improves the sound quality in terms of hearing. It No additional parts are needed and the price does not rise.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker, a speaker device, and a method for manufacturing the speaker device.
The present invention relates to a speaker having a flattened output sound pressure frequency characteristic in a voice region, a speaker device, and a method for manufacturing the speaker device.

[0002]

2. Description of the Related Art Conventionally, it has been known that a hollow occurs in a front surface of a speaker and a resonance of the speaker causes a peak in a mid-range characteristic to deteriorate sound quality and characteristics. In order to reduce the peak of such a mid-range characteristic, it is necessary to eliminate the depression on the front surface of the speaker. In general, if the speaker is mounted from the front of the baffle plate on the front surface of the speaker box, such a dent is eliminated, and thus a peak does not occur.

However, in this mounting method, in order to protect the speaker, it is necessary to attach the grill net to the front surface of the speaker so that the speaker box becomes expensive, especially in the case of an inexpensive small speaker. There was a problem that the cost would increase significantly. Therefore, in the case of a small speaker, due to price issues and manufacturing concerns,
The speaker is attached to the back side of the baffle plate.

FIG. 12 is a schematic sectional view showing an example of a state where a speaker is attached from the back side of the baffle plate of the speaker box. In the figure, 1 is a speaker box, 2 is a baffle plate, 3 is a back plate, SP is a speaker, and 4 is a speaker.
Is a yoke, 5 is a magnet, 6 is a plate, 7 is a frame, 8 is a voice coil, 9 is cone paper, 10 is an edge,
11 is a damper, 12 is a gasket (arrow paper), 13 is a cap, and 14 is a recess.

As shown in FIG. 12, if the speaker SP is attached in front of the baffle plate 2 on the front surface of the speaker box 1, a large volume is generated in front of the speaker SP. Such a large volume becomes a hollow portion (14 in the figure) when viewed from the speaker SP, causing resonance and deteriorating characteristics and sound quality.

As one of the methods for reducing the recessed portion 14, the baffle plate 2 is thinned as much as possible. However, as the baffle plate 2 becomes thinner, its strength decreases, so that the sound quality is inevitably deteriorated.

There is known a speaker device in which the bass resonance frequency is lowered by improving the shape of the edge member supporting the periphery of the cone-shaped diaphragm to avoid anti-resonance of the edge member (for example, a special feature). Kaihei 3-104499). A conventional round edge uses a semicircle or a part of a semicircle. Here, the theoretical characteristics of the depression will be described.

FIGS. 13A and 13B are views showing the shape of the recessed portion and the theoretical characteristics thereof when the speaker is attached from the back surface of the baffle plate, (1) the shape of the recessed portion, and (2) the characteristic diagram. . In the figure, A indicates the radius of the hollow portion, and B indicates the depth of the hollow portion.

As shown in FIG. 13 (1), the radius is A
Then, if there is a dented portion having a depth of B, resonance having a peak as shown in FIG. 13 (2) occurs. When the relationship between the radius A and the depth B of the recessed portion is indicated by α, α = A / B.
Due to this α = 1 to 3, the resonance peak is as shown in FIG.
Changes, and the peak is lower when α = 3 than when α = 1. That is, when α = A / B, the peak is lowered if the depth B is made smaller than the radius A of the recessed portion.

In FIG. 13 (2), KA on the horizontal axis
Is K = 2π / λ (where λ is the wavelength). In this case, consider the case where a speaker is attached to the bottom surface (for details, see Olson, Acoustic Engineering, 140).
page).

The round portion (curved portion) of the conventional edge member uses a semicircle or a part of the semicircle. for that reason,
The relationship between the radius R of the round portion and the lengths L1 and L2 between the vertices of the round portion is 2R = L1 + L2.

[0012]

In the case of a small speaker,
When the speaker is attached to the back side of the baffle plate, the resonance of the recessed portion generated on the front surface of the speaker deteriorates the characteristics and sound quality. According to the present invention, the characteristic variation due to the resonance of the recessed portion generated on the front surface of the speaker is eliminated, and the flat characteristic of the speaker is obtained.

[0013]

According to the invention of claim 1, in a speaker provided with a cone paper functioning as a vibrating portion and a round edge provided on the outer periphery of the cone paper, the round edge has a corrugation portion at the center. And a first round portion outside the corrugation portion and a second round portion inside the corrugation portion, and the distance between the outer peripheral end of the first round portion and the corrugation portion and the inner circumference of the second round portion. The distance between the end and the corrugation part is selected so that a dip occurs in the audio region of the output sound pressure frequency characteristic.

According to the invention of claim 2, when the speaker of claim 1 is attached to the back surface of the baffle plate, the dip in the audio area is an area for canceling the peak of the audio area due to the depression formed on the front surface of the speaker. There is.

According to another aspect of the invention, in the speaker having the cone paper functioning as the vibrating section and the round edge provided on the outer periphery of the cone paper, the round edge is located at the center and outside the corrugation section. A first round part and a second round part inside the corrugation part are provided, and the radius of curvature of the first round part and the radius of curvature of the second round part are selected to determine the output sound pressure frequency characteristic. A dip occurs in the audio area.

According to the invention of claim 4, when the speaker of claim 3 is attached to the back surface of the baffle plate, the dip in the sound area becomes an area for canceling the peak of the sound area due to the depression formed on the front surface of the speaker. There is.

According to the fifth aspect of the present invention, the cone paper functioning as a vibrating portion and the round edge provided on the outer periphery of the cone paper are provided, and the round edge has a corrugation portion in the center and a first outer portion of the corrugation portion. Round part,
In a method of manufacturing a speaker device including a second round portion inside a corrugation portion, the distance between the outer peripheral end of the first round portion and the corrugation portion and the distance between the inner peripheral end of the second round portion and the corrugation portion are set. Select and generate a dip in the sound area of the output sound pressure frequency characteristic, and when the speaker is attached to the back side of the baffle plate, the sound area dip cancels the peak of the sound area due to the depression formed on the front surface of the speaker. I am trying to become.

[0018]

According to the present invention, the shape of the outer edge of the cone, which is a part of the support of the speaker, is made different from the conventional edge shape, and in the JIS measurement box in the anechoic chamber, the sound region, for example, 1.5 KHz to 3. The dip is intentionally formed in the range of about 5 KHz, and the sound pressure increase due to the resonance due to the depression on the front surface of the speaker is applied to the dip portion so that a flat characteristic can be obtained. When the speaker is attached to the baffle plate of the speaker box from the back side, a recessed portion is inevitably generated, so resonance due to the recessed portion is unavoidable, and the characteristics and sound quality deteriorate.

Therefore, the speaker is attached to the JIS measurement box in the anechoic chamber (the box in which the phenomenon due to the hollow portion can be ignored) in advance, or the speaker is attached from the front of the baffle plate so that the hollow portion does not occur. Then, avoid increasing the sound pressure due to the resonance due to the depression. Therefore, if one length L1 is made small and the other length L2 is made large under the conditions described in FIG. 13, anti-resonance between the diaphragm and the edge (oscillation in opposite phase) occurs. It becomes easier, and the depth of the dip on the frequency characteristic becomes deeper. On the contrary, if one length L1 is increased and the other length L2 is decreased, the dip at the anti-resonance becomes shallow.

Therefore, by changing the shape of the edge of the speaker, the dip is intentionally created on the characteristic by measuring the state without the hollow portion, and the sound pressure due to the resonance when the dip is attached to the speaker box with the hollow portion. As a result of the rise, the dip disappears and flat characteristics can be obtained. In addition, it was possible to improve the sound quality in terms of hearing. If the speaker and the speaker device are configured based on this frequency characteristic correction method, no additional parts are required, and therefore the price of the speaker and the speaker device does not increase.

[0021]

EXAMPLES Examples of a speaker, a speaker device and a method of manufacturing the speaker device according to the present invention will be described.

FIG. 1 is a side sectional view showing an embodiment of a main part of an edge of the speaker of the present invention. In the figure, 21 is the first round part and 22 is the second round part.
Round portion, 23 is a corrugation portion, 23a is a center point of a cross section of the corrugation portion 23, R1 is a radius of curvature of a cross section of the first round portion 21, R2 is a radius of curvature of the second round portion 22, and L1 is a first radius. Round part 21 of 1
Outer edge (gasket side) of the cross section and corrugation part 2
3 is the distance from the center point 23a of the cross section, L2 is the center point 23a of the cross section of the corrugation portion 23 and the second round portion 2
2 shows the distance from the inner peripheral edge (cone paper side) of the cross section of 2.

As shown in the side sectional view of FIG. 1, in the speaker of the present invention, the edge is composed of a first round portion 21 and a second round portion 22 having different radii of curvature, and the edge is formed in the center thereof. A corrugation unit 23 is provided. In this way, the first round portion 21 and the second round portion 22 having different radii of curvature R1 form a round edge, and the corrugation portion 2 is formed on the top thereof.
By providing 3, a dip can be formed in the sound pressure frequency characteristic.

In this case, the center point 23a of the cross section of the corrugation portion 23 at the edge is L1 <
It may be set to the position of L2, but L1 = L2 or L1> L
It is also possible to set it to 2. In particular, as shown in FIG. 1, when L1 <L2 is set, the effective vibration radius of the speaker is increased, so that the output sound pressure level can be raised to some extent, which is effective in correcting the characteristics. When the edge having the shape as shown in FIG. 1 is provided on the outer circumference of the cone paper to form the speaker vibrating section, and the speaker is attached from the front of the baffle plate of the speaker box, as shown in FIG. It becomes a sound pressure frequency characteristic.

FIG. 2 is a diagram showing an example of sound pressure frequency characteristics when the speaker shown in FIG. 1 provided on the outer periphery of the cone paper is attached from the front of the baffle plate of the speaker box. In the figure, the horizontal axis represents frequency and the vertical axis represents output sound pressure.

As shown in FIG. 2, when the speaker using the edge shown in FIG. 1 is mounted from the front side of the baffle plate of the speaker box, the sound pressure frequency characteristics show a frequency range between f1 and f2 (Hz). A dip appears in the band. On the other hand, according to the theory of the depression described with reference to FIG. 13 above, when the speaker is attached from the back surface of the baffle plate, the peak of resonance due to the depression occurs in the sound pressure frequency characteristic. Therefore, if the dip between f1 and f2 (Hz) in FIG. 2 and the peak of resonance due to the depression are canceled each other, the sound pressure frequency characteristic can be flattened.

FIG. 3 shows the sound pressure frequency characteristics when the speaker having the edge shown in FIG. 1 provided on the outer periphery of the cone paper is mounted from the front surface of the speaker box, and the sound pressure frequency characteristics when it is mounted from the back surface of the baffle plate of the speaker box. It is a figure which shows notionally a sound pressure frequency characteristic. The horizontal axis of the figure represents frequency, the vertical axis represents output sound pressure, the broken line of C is the characteristic when the speaker is attached from the back surface of the baffle plate, the broken line of D is the characteristic when the speaker is attached from the front surface of the speaker box, The solid line E indicates the overall characteristics when the speaker is attached from the back surface of the baffle plate.

A broken line C shown in FIG. 3 indicates a case where the speaker is attached from the back surface of the baffle plate, and the speaker shown in FIG.
As described above, the peak is generated by the resonance due to the recessed portion on the front surface (front chamber) of the speaker. On the other hand, when the speaker using the edge of FIG. 1 is attached from the front of the baffle plate, as shown in FIG. 2, the frequencies f1 to f2 (H
A dip occurs during z).

Therefore, regarding the edges shown in FIG. 1, the radii of curvature R1 and R2 of the first round portion 21 and the second round portion 22, and the outer peripheral edge of the cross section of the first round portion 21 and the corrugation portion 23. The distance L1 from the center point 23a of the cross section and the center point 23 of the cross section of the corrugation portion 23
Distance a between a and the inner peripheral edge of the cross section of the second round portion 22
If 2 is selected to an appropriate value, the output sound pressure level in the frequency band can be flattened as shown by the solid line E, and the sound quality can be improved in terms of hearing. In this case, the radii of curvature R1, R2 and the distance L
By changing 1 and L2 to change the shape of the edge,
The characteristic shown in (2), that is, the characteristic when the speaker shown by the broken line D is attached from the front of the baffle plate is changed, and the frequency range of the dip can be arbitrarily selected. In this case, if the radii of curvature R1 and R2 are increased, the dip becomes shallower and the dip becomes smaller and deeper, as already described.

Therefore, in accordance with the desired frequency range,
The shape of the edge shown in FIG. 1 may be set. The frequency range of the sound pressure increase due to resonance also varies depending on the hollow portion formed on the front surface side of the speaker box and the diameter of the speaker, but in designing, the radius of curvature R1, R2 and , Distances L1 and L2
The optimum value of should be selected. In this case, it is necessary to consider the size and shape of the speaker box to be attached. In order to form a dip on the sound pressure frequency characteristics as shown in FIG. 2, the overall shape of the edge is formed by a round part, and the top (or bottom) of the round edge is corrugated. do it.

FIG. 4 is a side sectional view showing another embodiment of the edge portion of the speaker of the present invention. In the reference numerals in the figure, 24 is the first round part and 25 is the second round part.
Round portion, 26 is a corrugation portion, 26a is a center point of a cross section of the corrugation portion 26, R3 is a radius of curvature of a cross section of the first round portion 24, R4 is a radius of curvature of the second round portion 25, and L3 is a radius of curvature. Round part 24 of 1
Outer edge (gasket side) of the cross section and corrugation part 2
6 is the distance from the center point 26a of the cross section, L4 is the center point 26a of the cross section of the corrugation portion 26 and the second round portion 2
5 shows the distance from the inner peripheral edge (cone side) of the cross section of No. 5.

The edges shown in FIG. 4 are the same as the edges shown in FIG. 1 except that the directions of the tops of the round edges are opposite. The first round portion 24 and the second round portion are the same. A corrugation portion 26 is formed on the bottom portion of 25. As shown in FIG. 4, even if the overall shape of the edge is formed by a round portion and the corrugation is put at the bottom of the round edge, a dip is applied to a desired frequency band as in the edge of FIG. Can be formed.

FIG. 5 is a side sectional view showing the detailed shape of the edge shown in FIG. Reference numerals in the drawing are the same as those in FIG. 1, 27 is a cone paper, and R5 is a radius of curvature.

At the edge of FIG. 5, the corrugation portion 23 has a V-shaped cross section and the second round portion 25.
Shows that the first round portion 24 is formed by two portions having the radii of curvature R1 and R5, while the portion is formed by one portion having the radius of curvature R2. Cone paper 2
The diameter of 7 is, for example, 43 mm, the height of the round edge is 3 mm, L1 = 2.8 mm, L2 = 3.8 mm, the first
The radius of curvature R1 of the round portion 24 is 15 mm, the radius of curvature R2 of the second round portion 25 is 8 mm, and the depth of the corrugated portion 23 is about 1.5 mm.

The edge as shown in FIG.
Attach it to the outer circumference of the
It is attached to the IS measurement box and the sound pressure frequency characteristics are measured. In this case, as shown in FIG. 2, the dip is formed within a predetermined frequency range, for example, f1 to f2 (Hz). In this way, by changing the shape of the edge, for example, in the case of the edge of FIG. 5, a dip is intentionally formed between 1.5 KHz and 3.5 KHz on the sound pressure frequency characteristic.

FIG. 6 is a side sectional view showing an embodiment of the vibrating portion of the speaker of the present invention. In the figure, 27 is the same cone paper as in FIG. 5, 28 is an edge,
Reference numeral 29 represents a gasket.

The edge 28 shown in FIG. 6 is the edge described with reference to FIGS. 1 and 5 above, and although cloth is used as the material,
It is also possible to use other materials. As a manufacturing method, an edge 28 is manufactured by heating a mold of a cloth material as a material and press-molding it. Then, a cone paper 27 is stuck to the edge 28, so that a speaker edge 28 as shown in FIG. The cone paper 27 is completed. Next, a method of assembling a speaker incorporating the cone paper 27 with the edge 28 shown in FIG. 6 will be described. First, the magnetic circuit is assembled.

FIG. 7 is a cross-sectional view showing an embodiment of the main structure of the magnetic circuit of the speaker. Reference numerals in FIG.
15 is a center pole portion, 16 is a magnet guide, and 17 is a gap guide.

An adhesive is applied to the upper surface of the yoke 4, and the magnet 5 is placed and bonded. In this case, the magnet 5
The inner diameter of the magnet fits inside the magnet guide 16. Next, an adhesive is applied to the upper surface of the magnet 5, the magnet guide 16 is inserted into the center pole portion 15, and the plate 6 is placed and bonded.

In this case, the hole of the inner diameter of the plate 6 is made to enter the outer circumference of the magnet guide 16, and the outer circumference of the center pole portion 15 and the hole of the inner diameter of the plate 6 are concentric. After drying and fixing, the gap guide 17 is removed to complete the magnetic circuit.
In FIG. 7, the frame 7 is not fixed to the plate 6, but after the frame 7 is fixed to the plate 6 in advance, the magnet 5 and the plate 6 are adhered to each other to complete the speaker main body. , Insert the voice coil 8 into the voice coil spacer.

Next, a voice coil spacer is inserted into the inner diameter of the voice coil 8 to fix the voice coil 8 at a predetermined position of the gap of the magnetic circuit.
Insert in 5. By such work, the outer diameter of the center pole portion 15 and the inner diameter of the voice coil 8 become concentric. The voice coil spacer (not shown) is used to make the inner diameters of the center pole portion 15 and the voice coil 8 concentric, and to fix the winding portion of the voice coil 8 at a predetermined position of the gap.

FIG. 8 is a cross-sectional view showing an embodiment of the main configuration of the speaker of the present invention, in which the cone paper with edges is incorporated. The reference numerals in the figure are the same as those in FIG.
18 is a tinsel wire, and 19 is an input terminal.

After the magnetic circuit shown in FIG. 7 is completed, the outer circumference of the damper 11 is bonded to the frame 7, and the inner circumference of the damper 11 is bonded to the outer circumference of the voice coil 8. Cone paper 9
The outer circumference of the voice coil 8 is bonded to the frame 7, and the inner circumference is bonded to the outer circumference of the voice coil 8. The lead wire of the voice coil 8 is soldered to the input terminal 12, and the voice coil spacer is removed after the adhesive is dried. And if you attach the cap 13,
The speaker assembly process is completed. Finally, when the magnet 5 is magnetized, the speaker shown in FIG. 8 is completed.

FIG. 9 is a diagram showing an example of sound pressure frequency characteristics when the speaker shown in FIG. 8 is attached to a JIS measurement box. The horizontal axis of the figure shows the frequency and the vertical axis shows the output sound pressure.
The solid line indicates the characteristic curve.

In this case, as indicated by the solid line F in FIG. 9, a dip occurs in the frequency band of 1.5 KHz to 3.5 KHz. Next, a case where the speaker shown in FIG. 8 is attached from the back side of the baffle plate of the speaker box will be described. First, the work of mounting the speaker box will be described.

FIG. 10 is a sectional view showing an embodiment of the main configuration of the speaker device of the present invention with the speaker attached from the back surface of the speaker box. Reference numerals in the figure are the same as those in FIG. 8, 31 is a speaker box, 32 is a baffle plate, 33 is a duct, and 34 is
Is a back plate, 35 is a magnetic circuit, 36 is a speaker unit, 3
Reference numeral 7 indicates a hollow portion.

As shown in FIG. 10, the speaker box 3
The speaker system is completed by attaching the speaker unit 36 to the baffle plate 32 from the back side of the No. 1 and fixing the back plate 34 with fixing means such as screws. The speaker unit 36 shown in FIG. 10 is the speaker described in FIG. 8 above, and when it is attached from the back surface of the speaker box 31, a recessed portion 37 is formed on the front surface of the speaker. When the sound pressure frequency characteristics of the speaker system of FIG. 10 are measured, the results shown in FIG. 11 are obtained.

FIG. 11 shows the speaker shown in FIG. 8 according to JIS.
FIG. 11 is a diagram showing an example of sound pressure frequency characteristics of the speaker unit shown in FIG. 10 when attached to a measurement box. The horizontal axis of the figure shows the frequency, the vertical axis shows the output sound pressure, the broken line of F shows the case of being attached to the JIS measurement box, and the solid line of G shows the case of the speaker unit of FIG.

The characteristic indicated by the broken line F in FIG. 11 is the characteristic curve F shown in FIG. 9 when the speaker is attached to the JIS measurement box, and there is a dip in the frequency band of 1.5 KHz to 3.5 KHz. Has been formed. On the other hand, in the case of the speaker system of FIG. 10, the resonance caused by the recessed portion on the front surface of the speaker corrects the dip of 1.5 KHz to 3.5 KHz, and is flat as indicated by G in the solid line.

[0050]

According to the speaker and the speaker device of the present invention, the sound pressure increases due to the resonance when the speaker is installed in the speaker box having the hollow portion, so that the dip intentionally formed by the edge disappears and the sound pressure frequency characteristic is improved. Can be flat. At the same time, the sound quality is improved in terms of hearing. Moreover, the price of the speaker does not increase because no additional parts are required (the inventions of claims 1 and 3).

If the speaker of the present invention is attached from the back surface of the baffle plate, a small speaker device having flat sound pressure frequency characteristics can be obtained (the inventions of claims 2 and 4).

According to the method of manufacturing a speaker device of the present invention, a small speaker device having a flat sound pressure frequency characteristic can be obtained (the invention of claim 5).

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a main part of an edge of a speaker of the present invention.

FIG. 2 is a diagram showing an example of sound pressure frequency characteristics when the speaker having the edge shown in FIG. 1 provided on the outer periphery of the cone paper is attached from the front of the baffle plate of the speaker box.

3 is a sound pressure frequency characteristic when the speaker having the edge shown in FIG. 1 provided on the outer periphery of the cone paper is mounted from the front surface of the speaker box, and a sound pressure frequency when the speaker is mounted from the back surface of the baffle plate of the speaker box. It is a figure which shows a characteristic and conceptually.

FIG. 4 is a side sectional view showing another embodiment of the edge portion of the speaker of the present invention.

5 is a side sectional view showing a detailed shape of the edge shown in FIG.

FIG. 6 is a side sectional view showing an embodiment of a vibrating section of the speaker of the present invention.

FIG. 7 is a cross-sectional view showing an example of a main part configuration of a magnetic circuit of a speaker.

FIG. 8 is a cross-sectional view showing an embodiment of the main configuration of the speaker of the present invention, which incorporates cone paper with edges.

9 is a diagram showing an example of sound pressure frequency characteristics when the speaker shown in FIG. 8 is attached to a JIS measurement box.

FIG. 10 is a cross-sectional view showing one embodiment of the main configuration of the speaker device of the present invention with the speaker attached from the back surface of the speaker box.

11 is a diagram showing an example of sound pressure frequency characteristics when the speaker shown in FIG. 8 is attached to a JIS measurement box and in the speaker unit shown in FIG.

FIG. 12 is a schematic cross-sectional view showing an example of a state where a speaker is attached from the back side of the baffle plate of the speaker box.

FIG. 13 is a diagram showing a shape of a recessed portion generated when the speaker is attached from the back surface of the baffle plate and its theoretical characteristic.

[Explanation of symbols]

 1 Speaker Box 2 Baffle Plate 3 Back Plate 4 Yoke 5 Magnet 6 Plate 7 Frame 8 Voice Coil 9 Cone Paper 10 Edge 11 Damper 12 Gasket 13 Cap 14 Dimple Part 15 Center Pole Part 16 Magnet Guide 17 Gap Guide 21 First Round Part 22 2nd round part 23 Corrugation part 23a Center point of cross section of corrugation part 23

Claims (5)

[Claims] 1. A speaker comprising a cone paper functioning as a vibrating portion and a round edge provided on the outer periphery of the cone paper, wherein the round edge has a corrugation portion in the center and a first round outside the corrugation portion. And a second round portion inside the corrugation portion, the distance between the outer peripheral end of the first round portion and the corrugation portion, and the inner peripheral end of the second round portion and the corrugation portion. The speaker is characterized in that a dip is generated in the sound region of the output sound pressure frequency characteristic. 2. When the speaker according to claim 1 is attached to the back surface of the baffle plate, the dip in the sound area is set to be a region for canceling the peak of the sound area due to the depression formed on the front surface of the speaker. Speaker device. 3. A speaker having a cone paper functioning as a vibrating section and a round edge provided on the outer periphery of the cone paper, wherein the round edge has a corrugation portion in the center and a first round outside the corrugation portion. Section and a second round section inside the corrugation section, and a radius of curvature of the first round section and a radius of curvature of the second round section are selected to output a sound having an output sound pressure frequency characteristic. A speaker characterized by being formed so as to cause a dip in the area. 4. When the speaker according to claim 3 is attached to the back surface of a baffle plate, the dip in the sound area is set to be a region for canceling the peak of the sound area due to the depression formed on the front surface of the speaker. Speaker device. 5. A cone paper functioning as a vibrating section, and a round edge provided on the outer periphery of the cone paper, wherein the round edge has a corrugation portion in the center, and a first round portion outside the corrugation portion. In a method of manufacturing a speaker device including a second round portion inside the corrugation portion, a distance between the outer peripheral end of the first round portion and the corrugation portion, an inner peripheral end of the second round portion, and The distance of the corrugation part is selected so that a dip is generated in the sound area of the output sound pressure frequency characteristic, and when the speaker is attached to the back surface of the baffle plate, the sound of the dip in the sound area is formed on the front surface of the speaker. A method of manufacturing a speaker device, wherein the peak of the area is set to be an area to be canceled.