JP3161513U - Silencer for woodwind - Google Patents

Abstract

[PROBLEMS] To improve the noise reduction performance, obtain a natural wind sensation, be light and secure sufficient strength, and enjoy a performance with a natural wind sensation because it has a reasonable shape to accommodate woodwind instruments. Provide a silencer for woodwind instruments. SOLUTION: A sound absorbing layer is provided on the inner surface of a casing that can be opened and closed by a structure that is divided into two in the longitudinal direction, and a window is provided on the casing so that a player can operate keys of a woodwind instrument. Make a hole. The housing divided into two is composed of a hard synthetic resin left shell and a right shell, the thickness of the left and right shells is 2 mm to 4 mm, and the thickness of the sound absorbing layer is three times or more the shell thickness, A boss portion for attaching a neck support base sandwiching a neck of a woodwind instrument is integrally formed with at least one of the left and right shells. [Selection] Figure 1

Description

  The present invention relates to a silencer for woodwind instruments.

  In general, wind instruments such as brass instruments that generate wind sounds only from the tip bell can be silenced by attaching a silencer to the bell. However, woodwind instruments that are classified as clarinet, saxophone, oboe, etc., have many sound holes in the tube, and wind noise is generated from all of these sound holes. It is impossible to mute just by wearing a device.

  The simplest way to try to mute a woodwind instrument is to insert a soft cloth or paper inside the woodwind instrument tube to obtain a low-noise effect. There were problems such as having occurred and suffocating. In addition, in the field of musical instruments, the names such as muffler, weak sounder, and mute are not strictly distinguished.

  From such a problem concerning the silencing of a woodwind instrument, there has been proposed one in which a saxophone is accommodated in a cylindrical container to obtain a silencing effect (for example, Patent Document 1). This is a structure in which cylindrical foamed polystyrene is wound with a rubber sound insulation sheet, and the saxophone is housed inside this structure, so there are many gaps in each part, and wind noise leaks from this gap at a high volume. There is a serious drawback. Moreover, there is a problem that the device becomes huge and heavy, and above all, it cannot be played in a normal posture.

Japanese Patent Laid-Open No. 06-214559

Thus, in the conventional silencer for woodwind instruments, the wind noise generated inside the silencer leaks greatly to the outside of the silencer, so that a sufficient silencing effect cannot be obtained. Moreover, if the space inside the silencer is secured, the size of the silencer increases, and the weight cannot be reduced and sufficient strength cannot be obtained. In addition, the instrument cannot be fixed at an appropriate position in the space inside the silencer, and the pitch and pronunciation become unstable, so that a natural feeling of blowing cannot be obtained.
The present invention has been made in view of such a conventional problem, and it is possible to improve the silencing performance, obtain a natural feeling of blowing, and to reduce the strength even if the silencer body is light weight. The object is to provide a silencer for wind instruments.

Therefore, the present invention solves the above problems by the means described below. That is, according to the first aspect of the present invention, the inner surface of the casing is configured so that all sound holes of the woodwind instrument accommodated in the internal space can be enclosed, and can be opened and closed by the structure divided into two in the longitudinal direction. A silencer for a woodwind instrument, in which a sound absorbing layer is provided, and a window hole is provided in the casing so that a player can operate keys of the woodwind instrument,
The housing divided into two is composed of a hard synthetic resin left shell and a right shell. The thickness of the left and right shells is 2 mm to 4 mm, and the thickness of the sound absorbing layer is three times the thickness of the shell. As described above, at least one of the left and right shells is integrally formed with a boss portion for attaching a neck support base sandwiching the neck of the woodwind instrument.

  With this silencer for woodwind instruments, it is possible to obtain sufficient silencing performance, light weight and sufficient strength, and because it has a reasonable shape to accommodate woodwind instruments, it has a natural wind sensation. You can enjoy playing.

It is a side view of the silencer for woodwind instruments which implements this device. It is sectional drawing of the silencer for woodwind instruments of FIG. It is a side view of the silencer for woodwind instruments of this device. It is a side view of the silencer for woodwind instruments of FIG.

  FIG. 1 is a silencer for a woodwind instrument embodying the present invention, and shows a side surface on the right hand side when a performer takes a playing posture. FIG. 2 shows a cross section taken along line AA in FIG. . The main housing in the configuration of the present invention has a divided structure, and the right shell 1 and the left shell 12 have a thickness of 2 mm to 4 mm, and the right shell 1 and the left shell 12 are connected by a hinge 4. Accordingly, the hinge 4 can be used as a fulcrum to expand to the right shell 1 and the left shell 12, and the internal space can be exposed.

  Reference numeral 5 denotes a patchon lock, which functions as a lock when the openings of the right shell 1 and the left shell 12 are closed. Reference numeral 17 denotes a convex packing disposed at the opening end of the right shell 1, and reference numeral 18 denotes a concave packing disposed at the opening end of the left shell 12. Thereby, when the opening of the right shell 1 and the left shell 12 is closed, the convex packing 17 and the concave packing 18 are brought into close contact with each other and the airtightness is maintained.

  Reference numeral 2 denotes a window hole member for right-hand insertion, and reference numeral 13 denotes a window hole member for left-hand insertion. The window hole members 2 and 13 are formed of a material such as elastic ethylene / propylene / diene rubber (EPDM), for example, so that the window hole members 2 and 13 are formed on the outer circumferences of the left and right forearms inserted from the window holes. Therefore, even when the keys of the housed woodwind instrument are operated, the sealed state of the internal space can be maintained.

  Reference numeral 3 denotes a strap ring for suspending and supporting the casing constituted by the right shell 1 and the left shell 12, and is disposed on the rear side surface of the casing so as to be close to the woodwind instrument body to be accommodated. . Reference numeral 6 denotes a housed woodwind instrument. When this woodwind instrument is an alto saxophone, the height H of the casing formed by the right shell 1 and the left shell 12 is 720 mm, the width D is 240 mm, and the depth W is 320 mm. By doing so, it is possible to prevent the standing wave inside the woodwind instrument from being affected.

  Reference numeral 11 denotes a neck packing. When the right shell 1 and the left shell 12 are closed while the woodwind instrument 6 is accommodated, the neck of the woodwind instrument 6 is sandwiched between the neck packings 11 and this portion is airtight. Can do. Then, the mouthpiece 7, the lead 8 and the ligature 9 of the woodwind instrument 6 are exposed from the neck packing 11 to the outside, and it is possible to play. Reference numeral 10 denotes the uppermost sound hole of the neck portion of the woodwind instrument 6, and from this, all sound holes of the woodwind instrument 6 are included in the interior space of the silencer.

  Reference numeral 14 denotes a right shell sound absorbing layer, and reference numeral 15 denotes a left shell sound absorbing layer. The right shell sound-absorbing layer 14 and the left shell sound-absorbing layer 15 have a thickness that is at least three times the plate thickness of the left and right shells 12, 1, and a material such as a fiber excellent in moisture absorption and water absorption is used. preferable. The right shell sound absorbing layer 14 and the left shell sound absorbing layer 15 are attached to the right shell 1 and the left shell 12 by hook-and-loop fasteners 19, respectively. Reference numeral 16 denotes a neck support, which is configured to sandwich the neck 20 of the housed woodwind instrument 6. The neck support 16 is attached to a boss 160 formed integrally with the body of the left shell 12. Thereby, the said woodwind instrument 6 can be stably fixed to the approximate center of the interior space of a silencer. The boss 160 may be formed integrally with the body of the right shell 1.

  In a silencer for woodwind instruments constructed in this way, the end of a standing wave inside the woodwind instrument can be regarded as the position of the sound hole, and the lower the sound, the longer the wavelength, so Sufficient space is required around the open end. If the space is insufficient, the pitch and pronunciation are adversely affected. Therefore, it is necessary to consider the shapes of the right shell 1 and the left shell 12. Also, if the silencer is highly sealed, it may lose the escape route of exhaled breath by the player and give the player a feeling of breathlessness. For such a case, the vent hole 21 may be provided. However, the size, position, and number of the vent holes 21 may be set as appropriate in consideration of the silencing efficiency and the difficulty of breathing.

  The above description shows the basic configuration of the present invention. Inside the silencer, which is a closed space, the sound wave radiated from the sound hole is reflected by the inner wall of the nearby silencer, and the reflected wave is a woodwind instrument. May adversely affect internal standing waves. Therefore, in a structure in which the position of the woodwind instrument moves within the silencer, the sound is not stable. Therefore, it is desirable to attach the neck support 16 to the boss portion 160 and fix the woodwind instrument in the center of the space inside the housing to keep the accommodation position of the woodwind instrument constant.

  Also, the harder the sound wave, the stronger the reflected wave, and the amount and direction of reflected sound waves are also affected by the physical properties of the materials used for the right shell sound absorbing layer 14 and the left shell sound absorbing layer 15. Therefore, when setting the shape of the acoustic space inside the silencer, the physical properties of the materials of the right shell sound absorbing layer 14 and the left shell sound absorbing layer 15 must be considered together with the structure and sound range of the woodwind instrument. That is, the shape of the acoustic space inside the silencer that does not adversely affect the standing wave inside the woodwind instrument can be obtained after setting various conditions.

  The right shell sound absorbing layer 14 and the left shell sound absorbing layer 15 of the present invention have an important function in addition to the function of suppressing the reflected wave as described above. First, the silencing effect can be enhanced by suppressing sound absorption and vibration of the right shell 1 and the left shell 12. Secondly, it has a very high moisture absorption and water absorption, and strongly absorbs moisture contained in the exhalation of the performer's blowing.

  Moisture absorbed by the performer for a long time is temporarily absorbed by the right shell sound absorbing layer 14 and the left shell sound absorbing layer 15, but the right shell 1 and the left shell 12 are expanded to open the internal space to the outside air. If exposed, the absorbed water is dissipated and the water absorption capacity can be restored. In addition, a polyacrylate type is preferable for moisture absorption, and an acrylic fiber is preferable for water absorption, and a mixture thereof is an ideal material. Moreover, in this device, since the right shell sound absorbing layer 14 and the left shell sound absorbing layer 15 can be attached and detached by the hook and loop fastener 19, it can be selected and the hygienic condition can be kept high.

  Next, FIG. 3 is a silencer for a woodwind instrument showing an example in which the present invention is implemented. The wind sound generated in the internal space of the housing by the right shell 1 and the left shell 12 is collected by a microphone, and electroacoustic The signal enables the performer to listen to the wind sound. In other words, the original function of the silencer is to prevent the wind sound from leaking out to the external space, but this also means that the player cannot hear the wind sound, which may affect the practice effect. is there.

  Therefore, in the configuration shown in FIG. 3 which is a cross-sectional view taken along the line BB in FIG. 3 and FIG. 3, the sound generated in the internal space of the housing is collected by the microphone 24, and the electroacoustic signal of the microphone 24 is converted to the right. It was led to the electronic module 22 disposed in the recess formed in the shell of the shell 1 so that it could be heard by the earphone 23. In this configuration, a microphone hole 26 is formed in the right shell 1, the microphone 24 faces the microphone hole 26 via a packing 25, and is attached with a fixing screw 27.

  Due to the above configuration, the wind sounds generated in the internal space of the housing are collected by the microphone 24, and the earphone 23 is driven by the electroacoustic signal amplified by the electronic module 22, thereby allowing the performer to perform the wind. You can listen to the sound. If the electronic module 22 is provided with a reverberation circuit and an external input / output terminal, karaoke performance and monitoring can be performed, and the enjoyment of performance can be increased.

  As described above in detail, the silencer for woodwind instruments of the present invention is formed for various woodwind instruments by forming it according to the outer shape of the woodwind instrument that accommodates the casing constituted by the right shell and the left shell. It can be a silencer. That is, not only the saxophone woodwind musical instrument described as an example but also woodwind musical instruments such as clarinet or oboe can be dealt with by forming a casing according to the outer shape, The range of use can be made large.

1 ··· Right shell 2 ········ Window hole member (for right hand insertion)
3 ... Strap ring 4 ... Hinge 5 ... Patchon lock 6 ... Woodwind instrument (Alto saxophone)
7 ··· mouthpiece 8 ··· lead 9 ··· ligature 10 · · · sound hole (top)
11. Neck packing 12 ... Left shell 13 ... Window hole member (for left hand insertion)
14... Right shell sound absorbing layer 15... Left shell sound absorbing layer 16... Neck support base 160... Boss portion 17. Recessed packing 19 ... Hook fastener 20 ... Neck 21 ... Vent

Claims (1)

According to the first aspect of the present invention, the sound absorption is provided on the inner surface of the casing which can be opened and closed by a structure which is divided into two in the longitudinal direction so that all sound holes of the woodwind instrument housed in the internal space can be included. A silencer for a woodwind instrument provided with a window hole so that a key operation of the woodwind instrument by a player can be performed on the casing,
The housing divided into two is composed of a hard synthetic resin left shell and a right shell. The thickness of the left and right shells is 2 mm to 4 mm, and the thickness of the sound absorbing layer is three times the thickness of the shell. A silencer for a woodwind instrument, wherein a boss portion for attaching a neck support base sandwiching the neck of the woodwind instrument is integrally formed on at least one of the left and right shells.

Images