Pickup for sound-producing body and musical instrument equipped with pickup

Abstract

A pickup 10 for a sound-producing body according to one embodiment of the present disclosure comprises: a non-directional condenser microphone 11; and a chamber 12 formed in front of the non-directional condenser microphone 11. A part of the chamber 12 is defined by an elastic body 13 that has a first opening 13a penetrating along the inward-outward direction of the chamber 12. The pickup further comprises a weight body 14 layered on the elastic body 13 in a manner closing the first opening 13a.

Description

Pickup for a sounding body and musical instrument with a pickup

[0001] The present disclosure relates to a pickup for a sounding body and a musical instrument with a pickup.

[0002] Pickups used for musical instruments such as acoustic guitars are known (see Patent Document 1). Patent Document 1 describes a configuration in which vibrations from a sound source are sensed by a piezoelectric element. Further, Patent Document 1 describes that a moving coil microphone, a ribbon microphone, or a condenser microphone may be used instead of the piezoelectric element.

[0003] Japanese Patent Application Laid-Open No. 2012-73278

[0004] It is desirable that a pickup used for a musical instrument or the like can detect the original sound of the musical instrument. From such a viewpoint, it may be preferable that the pickup can detect the combined sound pressure of the vibration of the top plate (the member to which the pickup is attached) and the sound pressure from the space.

[0005] However, according to the pickup as described in Patent Document 1, it is difficult to detect the combined sound pressure of the vibration of the top plate and the sound pressure from the space.

[0006] An aspect of the present disclosure aims to provide a pickup for a sounding body that can detect the combined sound pressure of the vibration of the top plate and the sound pressure from the space.

[0007] The pickup for a sounding body according to an aspect of the present disclosure includes an omnidirectional condenser microphone and a chamber formed in front of the omnidirectional condenser microphone. A part of the chamber is defined by an elastic body having a first opening penetrating in the inner and outer directions of the chamber, and further includes a weight body laminated on the elastic body so as to close the first opening.

[0008] The pickup for a sounding body according to an aspect of the present disclosure can detect the combined sound pressure of the vibration of the top plate and the sound pressure from the space.

[0009] Figure 1 is a schematic cross-sectional view showing a pickup for a sound-producing element according to one embodiment of the present disclosure attached to a sound-producing element. Figure 2 is a schematic plan view of the pickup for a sound-producing element and the sound-producing element of Figure 1. Figure 3 is a schematic cross-sectional view showing a pickup for a sound-producing element, which has a different configuration from the pickup for a sound-producing element of Figure 1, attached to a sound-producing element. Figure 4 is a schematic cross-sectional view showing a pickup for a sound-producing element, which has a different configuration from the pickups for a sound-producing element of Figures 1 and 3, attached to a sound-producing element. Figure 5 is a schematic plan view of the pickup for a sound-producing element and the sound-producing element of Figure 4. Figure 6 is a schematic cross-sectional view showing a pickup for a sound-producing element, which has a different configuration from the pickups for a sound-producing element of Figures 1, 3, and 4, attached to a sound-producing element. Figure 7 is a schematic perspective view showing a musical instrument to which the pickup for a sound-producing element of the present disclosure is attached.

[0010] [Description of Embodiments of the Disclosure] First, embodiments of the Disclosure will be listed and described.

[0011] (1) A pickup for a sound-producing element according to one aspect of the present disclosure comprises an omnidirectional condenser microphone and a chamber formed in front of the omnidirectional condenser microphone, wherein a portion of the chamber is defined by an elastic body having a first opening that penetrates in the inward and outward directions of the chamber, and further comprises a weight body laminated on the elastic body so as to close the first opening.

[0012] The pickup for the sound-producing element has a first opening through which the elastic body penetrates the chamber in the inward and outward directions, and the weight body is laminated on the elastic body so as to close the first opening, so that it can detect the combined sound pressure of the vibration of the surface plate (the member to which the pickup for the sound-producing element is attached) and the sound pressure from the space. More specifically, in the pickup for the sound-producing element, the weight body functions as a weight for an acceleration sensor (a weight for acceleration). When the surface plate vibrates, the weight body compresses the elastic body due to its own weight, and as a result compresses the gas in the chamber. In addition to its function as a weight, the weight body also functions as a diaphragm that vibrates in response to sound pressure from the space. When the weight body receives sound pressure from the space, it vibrates and propagates this sound pressure to the chamber. As a result, in the chamber, the vibration of the surface plate and the sound pressure from the space are combined, and this combined sound pressure is input to the omnidirectional condenser microphone. Therefore, the pickup for the sound-producing element can detect the combined sound pressure of the vibration of the surface plate and the sound pressure from the space.

[0013] (2) In (1) above, the first aperture is preferably formed in front of the omnidirectional condenser microphone.

[0014] (3) In (1) or (2) above, the elastic body and the heavy body may each be in a layered form.

[0015] (4) In any of (1) to (3) above, the omnidirectional condenser microphone may be provided with a mounting portion on the back side for attachment to a sound-producing element.

[0016] (5) In any of (1) to (3) above, the omnidirectional condenser microphone may be provided with a mounting portion on the front side for attachment to a sound-producing element.

[0017] (6) In any of (1) to (5) above, the pickup for the sound-producing element comprises a housing having a second opening, the housing defines a part of the chamber, and the elastic body is preferably arranged in the housing such that the first opening and the second opening are in communication with each other.

[0018] (7) In any of (1) to (5) above, the omnidirectional condenser microphone is arranged on a substrate having a third aperture, and the elastic body is preferably arranged on the side of the substrate opposite to the side on which the omnidirectional condenser microphone is arranged, such that the first aperture and the third aperture are in communication.

[0019] (8) In any of (1) to (7) above, the omnidirectional condenser microphone may be a MEMS microphone.

[0020] (9) In any of (1) to (8) above, the pickup for the sound-producing element may be a pickup for a musical instrument.

[0021] (10) A musical instrument with a pickup according to another aspect of the present disclosure comprises a musical instrument and a pickup for a sound-producing element as described in (1) to (8) above.

[0022] (11) In the above (10), the instrument may have a sound hole.

[0023] In this disclosure, "front" in an omnidirectional condenser microphone means the side that receives sound pressure. Also, "front" in an omnidirectional condenser microphone means the side that receives sound pressure, and "back" means the opposite side. In this disclosure, "lamination" includes not only directly laminated configurations but also indirectly laminated configurations with other components in between. Also, "arrangement" includes not only directly arranged configurations but also indirectly arranged configurations with other components in between.

[0024] [Details of Embodiments in this Disclosure] Embodiments of this disclosure will be described in detail below. Note that the figures are schematic and may not correspond to actual dimensions, proportions, etc. In this disclosure, the designations "First," "Second," "Third," etc., are for distinguishing the components to which they are attached and do not limit the number, order, priority, etc.

[0025] [First Embodiment] <Pickup for Sound-Generating Element> The pickup 10 for sound-generating element shown in Figures 1 and 2 (hereinafter also simply referred to as "pickup 10") comprises an omnidirectional condenser microphone 11 and a chamber 12 formed in front of the omnidirectional condenser microphone 11 (the positive side in the Z-axis direction in Figures 1 and 2). Part of the chamber 12 is defined by an elastic body 13 having a first opening 13a that penetrates the chamber 12 in the inward and outward directions. The pickup 10 further comprises a weight body 14 that is stacked on the elastic body 13 so as to close the first opening 13a.

[0026] In Figures 1 and 2, the pickup 10 is attached to the sound-producing element 100, and more specifically, to the surface plate 110 which constitutes a part of the sound-producing element 100.

[0027] The pickup 10 has an elastic body 13 that penetrates the chamber 12 in an inward and outward direction, and a weight body 14 is stacked on the elastic body 13 so as to close the first opening 13a. Therefore, it is possible to detect the combined sound pressure of the vibration of the surface plate 110 and the sound pressure from the space (the space outside the pickup 10).

[0028] To explain in more detail, for example, the sound of a musical instrument with a soundhole is considered to be a composite sound of the sound (sound pressure) radiated from the surface plate 110 and the sound radiated from the soundhole. In this regard, in the pickup 10, the weight 14 functions as a weight for the acceleration sensor (a weight for acceleration). When the surface plate 110 vibrates, the weight 14 compresses the elastic body 13 due to its own weight, and as a result compresses the gas in the chamber 12. In addition to its function as a weight, the weight 14 also functions as a diaphragm that vibrates in response to sound pressure from the space. When the weight 14 receives sound pressure from the space, it vibrates and propagates this sound pressure to the chamber 12. As a result, in the chamber 12, the vibration of the surface plate 110 and the sound pressure from the space are combined, and this combined sound pressure (hereinafter also referred to as "combined sound pressure") is input to the omnidirectional condenser microphone 11. Therefore, the pickup 10 can detect the combined sound pressure of the vibration of the surface plate 110 and the sound pressure from the surrounding space, and consequently, it can detect the original sound pressure of the sound-producing element.

[0029] Furthermore, the pickup 10 includes a housing 15 having a second opening 15a. The housing 15 defines a part of the chamber 12. The pickup 10 also includes a mounting portion 16 on the rear side of the omnidirectional condenser microphone 11, which is attached to the sound-producing element 100.

[0030] The pickup 10 is, for example, a pickup for a musical instrument. The pickup 10 may be attached to an instrument that has a soundhole, for example. Examples of such instruments include stringed instruments such as acoustic guitars, violins, cellos, lutes, harps, kotos, and biwas. The pickup 10 can also be attached to instruments other than stringed instruments. By being attached to an instrument, the pickup 10 can detect the instrument's original sound.

[0031] (Omnidirectional Condenser Microphone) The omnidirectional condenser microphone 11 has a diaphragm (not shown). When the diaphragm of the omnidirectional condenser microphone 11 moves in response to sound pressure, the voltage changes. The diaphragm has a resonance point in a frequency band beyond the audible range, and at frequencies lower than this resonance point, it vibrates in proportion to the sound pressure. Because the pickup 10 is equipped with the omnidirectional condenser microphone 11, it can detect the combined sound pressure of the vibration of the surface plate 110 and the sound pressure from the space over a wide bandwidth.

[0032] As long as the omnidirectional condenser microphone 11 is omnidirectional, it is not particularly limited and various microphones can be used. In particular, the omnidirectional condenser microphone 11 may be a MEMS (Micro Electro Mechanical System) microphone. A MEMS microphone is formed, for example, by a silicon process. A MEMS microphone has MEMS elements arranged on a printed circuit board and is small and multifunctional. By using a MEMS microphone as the omnidirectional condenser microphone 11 of the pickup 10, it is possible to make it smaller and more multifunctional, while also reducing manufacturing costs.

[0033] (Chamber) Chamber 12 is a sealed space in which the vibration of the surface plate 110 and the sound pressure from the surrounding space are combined. A gas (typically air) is present in Chamber 12. The vibration and the sound pressure are transmitted to Chamber 12 via the weight 14. That is, the vibration and the sound pressure are transmitted to Chamber 12 from the same direction. In this disclosure, Chamber 12 is required to be able to transmit the combined sound pressure, which is the result of the vibration of the surface plate 110 and the sound pressure from the surrounding space, to the omnidirectional condenser microphone 11. Therefore, "sealed" in this disclosure means a completely sealed state.

[0034] As described above, the chamber 12 is formed in front of the omnidirectional condenser microphone 11. In this disclosure, "the chamber is formed in front of the omnidirectional condenser microphone" means that at least a portion of the chamber is formed in front of the omnidirectional condenser microphone. In this embodiment, the omnidirectional condenser microphone 11 is placed in the chamber 12.

[0035] The chamber 12 includes a first opening 13a, which is closed by a weight 14. In the pickup 10, the first opening 13a is formed in front of the omnidirectional condenser microphone 11. In other words, the weight 14 is positioned in front of the omnidirectional condenser microphone 11, with the chamber 12 in between. The diaphragm of the omnidirectional condenser microphone 11 may face the weight 14 across the chamber 12. Because the first opening 13a is formed in front of the omnidirectional condenser microphone 11, the diaphragm can receive the combined sound pressure propagated through the weight 14. As a result, the combined sound pressure can be detected over a wide bandwidth.

[0036] (Elastic body) The elastic body 13 has a first opening 13a that defines a part of the chamber 12. The elastic body 13 is, for example, layered. The elastic body 13 compresses the gas in the chamber 12 by being compressed in the thickness direction due to the vibration of the surface plate 110. Because the elastic body 13 is layered, it easily propagates the vibration of the surface plate 110 to the omnidirectional condenser microphone 11.

[0037] The material of the elastic body 13 is not particularly limited, but rubber is one example. The rubber may be foamed rubber. It is preferable that the thickness of the elastic body 13 is uniform.

[0038] As described above, the elastic body 13 defines a part of the chamber 12. Therefore, it is preferable that the elastic body 13 has sound-insulating properties from the viewpoint of forming the chamber 12 as a propagation path for the combined sound pressure. From this viewpoint, it is preferable that the elastic body 13 does not have holes that communicate with the inside and outside of the chamber 12, for example.

[0039] (Weight body) The weight body 14 is placed on the elastic body 13 so as to close the first opening 13a. The weight body 14 may be laminated on the elastic body 13 with other layers in between, or it may be laminated directly on the elastic body 13. The weight body 14 is laminated on the outer surface side of the elastic body 13.

[0040] Preferably, the pickup 10 has resonance points for the weight body 14 and the elastic body 13 in a frequency band exceeding the frequency band of the instrument to which the pickup 10 is attached. In this embodiment, the vibration of the weight body 14 becomes constant amplitude at frequencies lower than this resonance point. As a result, the omnidirectional condenser microphone 11 can detect the combined sound pressure of the vibration of the surface plate 110 and the sound pressure from the surrounding space over a wide bandwidth.

[0041] The weight body 14 is, for example, layered. In this embodiment, the weight body 14 is easily made to function as a weight in the acceleration sensor and as a diaphragm that vibrates in response to sound pressure from space. In particular, in this embodiment, since the elastic body 13 and the weight body 14 are each layered, the combined sound pressure is easily transmitted to the omnidirectional condenser microphone 11.

[0042] The weight body 14 is rigid against sound and vibration. The weight body 14 is able to vibrate when supported by the elastic body 13. The material of the weight body 14 is preferably one that has a moderate weight and sufficient rigidity to function as a diaphragm, and examples include metal and hard resin. An example of the metal is aluminum. In this disclosure, "metal" includes alloys.

[0043] In the pickup 10, the weight of the weight body 14 is a factor that controls the combined ratio of the vibration of the surface plate 110 and the sound pressure from the space. That is, in the pickup 10, increasing the weight of the weight body 14 increases the combined ratio of the vibration of the surface plate 110, and decreasing the weight of the weight body 14 increases the combined ratio of the sound pressure from the space. In this way, the pickup 10 makes it possible to adjust the combined ratio of the vibration of the surface plate 110 and the sound pressure from the space relatively easily.

[0044] (Housing) The housing 15 defines the chamber 12 together with the elastic body 13 and the weight body 14. The housing 15 has a second opening 15a. The opening area of the second opening 15a may be the same as the opening area of the first opening 13a. In the present embodiment, the omnidirectional condenser microphone 11 is disposed on the bottom surface of the housing 15 (the inner surface on the negative side in the Z-axis direction in FIG. 1). The second opening 15a is formed in front of the omnidirectional condenser microphone 11.

[0045] In the chamber 12, the first opening 13a and the second opening 15a communicate with each other. The elastic body 13 is disposed on the housing 15 such that the first opening 13a and the second opening 15a communicate with each other, and more specifically, is disposed on the outer surface side of the housing 15. In the pickup 10, the second opening 15a, the first opening 13a, and the weight body 14 are arranged in this order in front of the omnidirectional condenser microphone 11 (in the positive direction of the Z-axis direction in FIG. 1). According to this aspect, the pickup 10 can detect the combined sound pressure in a wide band.

[0046] (Mounting portion) The mounting portion 16 may be disposed on the outer surface of the housing 15 on the back side of the omnidirectional condenser microphone 11. The mounting portion 16 only needs to be provided so that the pickup 10 can be attached to the surface plate 110 of the sounding body 100, and its specific configuration is not particularly limited. The mounting portion 16 may be, for example, a double-sided tape or an adherend portion adhered by an adhesive.

[0047] In the pickup 10, since the mounting portion 16 is provided on the back side of the omnidirectional condenser microphone 11, the vibration of the surface plate 110 and the sound pressure from the space are in the same phase, and the vibration of the surface plate 110 and the sound pressure from the space are added in the chamber 12. As a result, the combined sound pressure obtained by adding the vibration of the surface plate 110 and the sound pressure from the space can be detected in a wide band.

[0048] [Second Embodiment] <Pickup for Sound - producing Body> The pickup 20 for a sound - producing body in Fig. 3 (hereinafter, also simply referred to as "pickup 20") includes an omnidirectional condenser microphone 11 and a chamber 12 formed in front of the omnidirectional condenser microphone 11 (the negative side in the Z - axis direction in Fig. 3). A part of the chamber 12 is defined by an elastic body 13 having a first opening 13a penetrating in the inner - outer direction of the chamber 12. Further, the pickup 20 includes a weight body 14 laminated on the elastic body 13 so as to close the first opening 13a, and a housing 25 having a second opening 25a. The housing 25 defines a part of the chamber 12. Also, the pickup 20 includes an attachment portion 16 attached to the sound - producing body 100 on the front - side of the omnidirectional condenser microphone 11. The pickup 20 is, for example, a pickup for musical instruments. The pickup 20 can have the same configuration as the pickup 10 in Fig. 1 except that the shape of the housing 25 and the arrangement of each part with respect to the housing 25 are different. Therefore, hereinafter, only the housing 25 and the arrangement of each part with respect to the housing 25 will be described.

[0049] (Housing) The housing 25 has a first chamber 26 in which the omnidirectional condenser microphone 11 is arranged and a second chamber 27 communicating with the first chamber 26 through the second opening 25a. The first chamber 26 is configured as a part of the chamber 12. More specifically, the chamber 12 is formed by the first chamber 26, the second opening 25a, and the first opening 13a of the elastic body 13. The omnidirectional condenser microphone 11 is arranged on the bottom surface of the first chamber 26 (the inner surface on the positive side in the Z - axis direction in Fig. 3). The second opening 25a is formed in front of the omnidirectional condenser microphone 11.

[0050] In the second chamber 27, the elastic body 13 and the weight body 14 are arranged. The elastic body 13 is arranged in the housing 25 such that the first opening 13a and the second opening 25a communicate with each other. Also, the weight body 14 is directly laminated on the elastic body 13 in the second chamber 27. In the pickup 20, the second opening 25a, the first opening 13a, and the weight body 14 are arranged in this order in front of the omnidirectional condenser microphone 11 (in the negative Z - axis direction in Fig. 3).

[0051] The second chamber 27 has a sound pressure introduction hole 27a into which sound pressure is introduced from the outside. The second chamber 27 is configured as a propagation path for transmitting the sound pressure introduced from the sound pressure introduction hole 27a to the weighted body 14.

[0052] The pickup 20 has a mounting portion 16 on the front side of the omnidirectional condenser microphone 11. The mounting portion 16 may be located on the outer surface of the housing 25 on the front side of the omnidirectional condenser microphone 11.

[0053] In the pickup 20, the mounting portion 16 is provided on the front side of the omnidirectional condenser microphone 11, so that the vibration of the surface plate 110 and the sound pressure from the surrounding space are in opposite phase, and the sound pressure from the surrounding space is subtracted from the vibration of the surface plate 110 in the chamber 12. As a result, the combined sound pressure obtained by subtracting the sound pressure from the surrounding space from the vibration of the surface plate 110 can be detected over a wide bandwidth.

[0054] [Third Embodiment] <Pickup for Sound-Generating Body> The pickup 30 for sound-generating body shown in Figures 4 and 5 (hereinafter also simply referred to as "pickup 30") comprises an omnidirectional condenser microphone 11 and a chamber 32 formed in front of the omnidirectional condenser microphone 11 (negative side in the Z-axis direction in Figure 4). Part of the chamber 32 is defined by an elastic body 13 having a first opening 13a that penetrates the chamber 32 in the inward and outward directions. The pickup 30 further comprises a weight body 14 stacked on the elastic body 13 so as to close the first opening 13a. The pickup 30 also comprises a mounting portion 16 on the front side of the omnidirectional condenser microphone 11 for attachment to the sound-generating body 100. The pickup 30 is, for example, a pickup for a musical instrument. In the pickup 30, the specific configuration of the omnidirectional condenser microphone 11, the elastic body 13, the weight body 14, and the mounting portion 16 can be the same as that of the pickup 10 in Figure 1, so a description is omitted.

[0055] The pickup 30 includes a substrate 38. The substrate 38 has a third opening 38a that penetrates in the thickness direction. The substrate 38 is attached to the sound-producing body 100 by a mounting portion 16.

[0056] The omnidirectional condenser microphone 11 is placed on a substrate 38 having a third aperture 38a. The elastic body 13 is placed on the side of the substrate 38 opposite to the side on which the omnidirectional condenser microphone 11 is placed, such that the first aperture 13a and the third aperture 38a are in communication with each other.

[0057] The first opening 13a and the third opening 38a are formed in front of the omnidirectional condenser microphone 11, and more specifically, in front of the diaphragm of the omnidirectional condenser microphone 11.

[0058] The first opening 13a and the third opening 38a constitute the chamber 32. More specifically, in this embodiment, the chamber 32 is composed of the first opening 13a and the third opening 38a.

[0059] The circuit board 38 may be separate from the omnidirectional condenser microphone 11, or it may be integrally configured with the omnidirectional condenser microphone 11. For example, if the omnidirectional condenser microphone 11 is a MEMS microphone, the circuit board 38 may be a printed circuit board on which MEMS elements are arranged. That is, in this disclosure, "an omnidirectional condenser microphone arranged on a circuit board" includes a configuration in which MEMS elements are arranged on a printed circuit board. By integrally configuring the omnidirectional condenser microphone 11 and the circuit board 38, the pickup 30 can be miniaturized by reducing the number of components, and manufacturing costs can be reduced.

[0060] The pickup 30 is attached to a reinforcing member 120 that constitutes part of the sound-producing body 100. The reinforcing member 120 may be, for example, a brace placed on the inner surface of the surface plate 110. The reinforcing member 120 may have a recess 120a for positioning the pickup 30.

[0061] Since the pickup 30 has an omnidirectional condenser microphone 11 and an elastic body 13 arranged on a substrate 38, miniaturization can be promoted. Furthermore, because the volume of the chamber 32 of the pickup 30 can be reduced, it is easier to detect the combined sound pressure of vibrations of the surface plate 110 and sound pressure from the surrounding space with high sensitivity over a wide bandwidth.

[0062] [Fourth Embodiment] <Pickup for Sound-Generating Element> The pickup 40 for the sound-generating element shown in Figure 6 (hereinafter also simply referred to as "pickup 40") is attached to the surface plate 110 via a spacer 130. The spacer 130 is not particularly limited and may be, for example, one or more support columns arranged on the inner surface of the surface plate 110.

[0063] The pickup 40 can have the same configuration as the pickup 30 in Figures 4 and 5, except that it is attached to the surface plate 110 via a spacer 130.

[0064] The pickup 40 can be made smaller. Furthermore, since the volume of the chamber 32 can be reduced, the pickup 40 can easily detect the combined sound pressure of the vibration of the surface plate 110 and the sound pressure from the surrounding space with high sensitivity over a wide bandwidth.

[0065] [Fifth Embodiment] <Instrument with Pickup> The instrument with pickup 50 in Figure 7 comprises an instrument 60 and a pickup 10 in Figure 1. The instrument with pickup 50 may also use any of the pickups 20, 30, or 40 instead of the pickup 10. Furthermore, the instrument with pickup 50 may be equipped with multiple pickups 10, 20, 30, or 40.

[0066] The instrument 50 with a pickup is equipped with a pickup 10, making it easier to emit the instrument's original sound.

[0067] The instrument 60 has a soundboard 61 and a soundhole 61a. The soundhole 61a is formed in the soundboard 61. The instrument 60 is a stringed instrument, for example, an acoustic guitar.

[0068] Since the instrument 60 has a soundhole 61a, the original sound produced by the instrument 60 is a composite of the sound from the soundboard 61 and the sound from the soundhole 61a. In this respect, the instrument 50 with a pickup is equipped with a pickup 10, so it can detect the composite sound pressure of the vibration of the soundboard 61 and the sound pressure from the soundhole 61a over a wide bandwidth.

[0069] The placement of the pickup 10 in the instrument 60 is not particularly limited. In Figure 7, the pickup 10 is placed on the inner surface of the soundboard 61. Generally, the internal pressure of the instrument 60 has a frequency characteristic that is approximately the same as the sound pressure from the soundhole 61a. Therefore, by placing the pickup 10 on the inner surface of the soundboard 61 and detecting the internal pressure of the instrument 60, it is possible to emit a sound equivalent to the sound from the soundhole 61a.

[0070] [Other Embodiments] The embodiments described above do not limit the configuration of the present invention. Therefore, the embodiments may omit, substitute, or add components of each part of the embodiments based on the description herein and common technical knowledge, and all such additions should be interpreted as falling within the scope of the present invention.

[0071] In the above embodiment, an example was described in which the sound-producing pickup is for a musical instrument. However, the sound-producing pickup is not limited to musical instruments. For example, the sound-producing pickup may be placed in a speaker. Furthermore, the sound-producing pickup may be used to detect abnormal noises or sounds from buildings, machinery, transport vehicles, etc., and may be placed in tires, for example.

[0072] In the above embodiment, a configuration was described in which the first aperture is positioned outside the second or third aperture with respect to an omnidirectional condenser microphone, and the first aperture is closed from the outer side by a weight. However, in this disclosure, the positional relationship between the first aperture, the second aperture and the weight, or between the first aperture, the third aperture and the weight, is not limited to the configuration of the above embodiment. Furthermore, the pickup for the sound-producing element may also employ a configuration in which the housing, elastic body and weight are directly laminated, or a configuration in which other members are further laminated in place of the above configuration in which the substrate, elastic body and weight are directly laminated.

[0073] In this disclosure, the first aperture only needs to be positioned so as to propagate sound pressure to the diaphragm of the omnidirectional condenser microphone, and does not necessarily have to be formed in front of the omnidirectional condenser microphone.

[0074] 10, 20, 30, 40... Pickup for sound-producing element (pickup), 11... Omnidirectional condenser microphone, 12, 32... Chamber, 13... Elastic body, 13a... First opening, 14... Weight body, 15, 25... Housing, 15a, 25a... Second opening, 16... Mounting part, 26... First chamber, 27... Second chamber, 27a... Sound pressure introduction hole, 38... Substrate, 38a... Third opening, 50... Instrument with pickup, 60... Instrument, 61, 110... Surface plate, 61a... Sound hole, 100... Sound-producing element, 120... Reinforcement member, 120a... Recess, 130... Spacer

Claims

1. A pickup for a sound-producing element, comprising an omnidirectional condenser microphone and a chamber formed in front of the omnidirectional condenser microphone, wherein a portion of the chamber is defined by an elastic body having a first opening that penetrates in the inward and outward directions of the chamber, and further comprising a weight body stacked on the elastic body so as to close the first opening.

2. The pickup for a sound-producing element according to claim 1, wherein the first opening is formed in front of the omnidirectional condenser microphone.

3. The pickup for a sound-producing element according to claim 1, wherein the elastic body and the weight body are each in a layered configuration.

4. The pickup for a sound-producing element according to claim 1, further comprising a mounting portion on the rear side of the omnidirectional condenser microphone for attachment to a sound-producing element.

5. The pickup for a sound-producing element according to claim 1, further comprising a mounting portion on the front side of the omnidirectional condenser microphone for attachment to the sound-producing element.

6. The pickup for a sound-producing element according to claim 1, comprising a housing having a second opening, wherein the housing defines a part of the chamber, and the elastic body is arranged in the housing such that the first opening and the second opening are in communication.

7. The pickup for a sound-producing element according to claim 1, wherein the omnidirectional condenser microphone is arranged on a substrate having a third aperture, and the elastic body is arranged on the side of the substrate opposite to the side on which the omnidirectional condenser microphone is arranged, such that the first aperture and the third aperture are in communication.

8. The pickup for a sound-producing device according to claim 1, wherein the omnidirectional condenser microphone is a MEMS microphone.

9. A pickup for a sound-producing element according to any one of claims 1 to 8, which is a pickup for a musical instrument.

10. A musical instrument with a pickup, comprising a musical instrument and a pickup for a sound-producing element as described in any one of claims 1 to 8.

11. The musical instrument with a pickup according to claim 10, wherein the instrument has a sound hole.

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