JP2005326810A - Muting method for wind instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of a mute of the conventional wind instrument that a muting effect is weak with the wood wind instrument having a multiplicity of side holes and that the resistance of blowing of breath increases in a brass instrument. <P>SOLUTION: The sounds produced from a resonance tube are reduced by providing a route for air vibration communicating from a sounding body, such as a reed, lip reed or air reed of a brass wind instrument or wood instrument with a bypass tube branching from the mid-portion thereof with the outside of the musical instrument and discharging the air vibration to the outside of the musical instrument. The bypass tube needs be confined to a length at which the sounds produced from the bypass tube attenuate of itself. Otherwise, the sounds are muffled by introducing the sounds into a passive muffler or active muffler. The air in the bypass tube may be discharged by a pump in order to reduce the resistance blowing and to make weak tones stronger. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for weakening a wind instrument such as a saxophone.

The conventional method for weak sound of wind instruments is a method of preventing sound leakage by closing the end of the resonance tube with a part called a mute in a brass instrument such as a trumpet (FIG. 2) whose sound exit is only at the end of the resonance tube. 3) is known. For example, Patent Literature 1, Patent Literature 2 and Patent Literature 3 apply this technique. Patent Document 3 has a structure for guiding a sound from the mute to the performer's ear by a hollow rod, but this hollow rod does not have a weak sound function. On the other hand, in the case of a woodwind instrument such as a saxophone (Fig. 4) in which the resonance tube has many side holes, these are the sound outlets. There is an attempt to realize a weak sound. (For example, refer to Patent Document 4). Patent Document 4 has a structure in which a discharge channel is provided in the mouthpiece of a musical instrument to discharge air to the outside of the musical instrument. .
JP-A-8-194473 JP 2001-282233 A Special table flat 9-501243 Special Table 2000-514567

However, according to the above technology,
In the conventional method of weak sound of wind instruments, it has been pointed out that in brass instruments, the resistance to breathing increases because the end of the resonance tube is blocked. A woodwind instrument with a large number of side holes cannot be expected to have a weak sound effect even when the end of the resonance tube is blocked.

  It is an object of the present invention to provide a method for weak sound that is effective for wind instruments including woodwind instruments. Further, it is an object of the present invention to provide a realistic sound method that reduces an increase in blowing resistance and does not damage the instrument. To do.

  In order to achieve the above object, in the sound attenuation method of the present invention, a bypass pipe is provided that branches from the middle of the sound path leading to the resonance pipe from a sounding body such as a wind instrument reed, lip lead, and air lead. It is a method to reduce the sound to be played.

  The kinetic energy of the sounding body's vibration is transmitted to the air in the resonance tube, producing instrument sounds. By providing a bypass tube, the kinetic energy of the vibration of the air passing through the bypass is transmitted to the outside while being attenuated. The kinetic energy of air vibration is reduced. Sound generated from the bypass end can be silenced by general conventional techniques such as natural attenuation, passive silencing, and active silencing. In this way, the sound generated from the instrument is weakened.

  The position where the bypass pipe branches is in a brass instrument such as a trumpet, or between the pipe length varying device closest to the resonance tube end opening and the resonance tube end opening (FIG. 5), or closest to the sound generator and the sound generator. It is between the tube length variable device (valve and slide) (FIG. 6), and in woodwind instruments such as saxophone, it is between the sounding body and the side hole closest to the sounding body (FIG. 7).

  In order to arrange the bypass tube in the resonance tube without damaging the instrument, the bypass tube may be drawn out from the end of the resonance tube via the resonance tube to the outside of the instrument.

  The bypass pipe may be made of a material that can be bent freely, or may be a plurality of pipes that can be disassembled and connected in order to pipe the pipe through the resonance pipe.

  A plurality of flagella-like protrusions may be attached to the outside of the bypass pipe to help maintain the position of the bypass pipe in the resonance pipe.

  A hole is made in a part of the wind instrument for reasons such as not favoring that the bypass pipe passes through the resonance pipe in order to place importance on the timbre, or for avoiding the piping of the bypass pipe to the pipe length varying unit in a brass instrument. The bypass pipe can be pulled out of the instrument and piped.

  Without placing a hole in the instrument for reasons such as not favoring the bypass pipe to go through the resonance pipe to emphasize the tone, or for avoiding bypass pipe piping to the pipe length variable device in brass instruments. A part having a branch function may be inserted into the joint portion of the musical instrument, and the bypass pipe may be pulled out of the musical instrument.

  The sound generated from the end of the bypass pipe may be naturally attenuated by lengthening the bypass pipe.

  Sound generated from the end of the bypass pipe can be silenced by connecting the bypass pipe to a passive silencer or an active silencer.

  Sound generated from the end of the bypass pipe can be silenced using a sound-absorbing material for the bypass pipe.

  Since the air in the bypass pipe is discharged to the outside by blowing, there is an effect of reducing an increase in blowing resistance.

  Forcibly discharging the air in the bypass pipe with a pump or the like has the effect of further reducing the increase in blowing resistance.

  Forcibly discharging the air in the bypass pipe by a pump or the like increases the volume of air passing through the bypass pipe, and has the effect of reducing the ratio of the air volume passing through the resonance pipe without entering the bypass pipe. is there.

  At the part where the bypass pipe branches from the middle of the sound path from the sound generator such as a wind instrument reed to the resonance pipe, it may be opened only in the bypass pipe direction and closed in the resonance pipe direction so that air cannot flow into the resonance pipe. . In this case, the vibration may be transmitted to the air in the resonance tube through the bypass tube wall to generate a sound corresponding to the shape of the resonance tube.

  The bypass tube may not be a hollow tube having a constant outer diameter, but may be a hollow tube having an outer shape in consideration of the tone color of sound generated by a wind instrument resonance tube.

  According to this embodiment, the sound generated from the resonance tube is weakened by the action of the bypass tube in both the brass and woodwind instruments.

  According to this embodiment, since the resonance tube end is not completely blocked, the uncomfortable feeling of blowing resistance is reduced. The feeling of incongruity is small because it is not required to blow weakly because of the weak sound.

  The flagella-like protrusions on the outer surface of the bypass pipe have an effect of avoiding problems such as the bypass pipe closing the side holes.

One embodiment of the present invention is shown in FIG.
In the vicinity of the wind instrument sounding body 1 in the wind instrument resonance tube 2, there is an opening of the bypass tube 5. The bypass tube 5 passes through the wind instrument resonance tube 2 and extends from the end opening 3 of the wind instrument resonance tube 2 to the outside of the instrument. Is connected to a passive silencer or an active silencer 6. A number of flagellar projections 8 are attached to the outer surface of the bypass pipe 5 in the wind instrument resonance pipe 2 and are held at positions where the side holes 4 of the instrument are not blocked.

It is the schematic diagram which showed one Embodiment of invention. It is the schematic diagram which showed the typical structure and generation | occurrence | production of a sound of a brass instrument with the thick arrow. It is a schematic diagram which shows the prior art of the weak sound method of a brass instrument. It is the schematic diagram which showed the typical structure and sound generation of the woodwind instrument with thick arrows. It is a schematic diagram at the time of arrange | positioning the branch position of the bypass pipe in a brass instrument near the resonance pipe end opening part. It is a schematic diagram at the time of arrange | positioning the branch position of the bypass pipe in a brass instrument near the sounding body. It is the schematic diagram which showed the branch position of the bypass pipe in a woodwind instrument.

Explanation of symbols

1 Wind instrument sounding body (lead, lip lead, air lead, etc.)
2 Wind instrument resonance tube 3 Resonance tube end opening 4 Side hole of woodwind instrument 5 Bypass tube 6 Passive silencer or active silencer 7 Pump 8 Flagellar projection 9 Brass instrument tube length variable device (valve, slide, etc.)
10 Mute

Claims (10)

A method for sound attenuation of a wind instrument comprising providing a bypass pipe that branches from the middle of a sound path leading from a sound generator of a wind instrument to a resonance tube. 2. The wind instrument sound attenuation method according to claim 1, wherein the bypass pipe is a pipe that can be inserted into and removed from the resonance pipe without damaging the instrument body. 2. The wind instrument sound attenuation method according to claim 1, wherein the bypass pipe is a pipe which is made by making a hole in a part of the wind instrument and pulled out of the instrument. 2. The method of sound attenuation of a wind instrument according to claim 1, wherein the bypass pipe is a pipe drawn out of the instrument by inserting a part having a branching function in a joint portion of the instrument without making a hole in the instrument. 2. The wind instrument sound attenuation method according to claim 1, wherein the sound generated from the end of the bypass pipe is the bypass pipe having a length that naturally attenuates. 2. The wind instrument sound attenuation method according to claim 1, wherein the sound generated from the end of the bypass pipe is guided to a passive silencer or an active silencer. 2. The wind instrument sound attenuation method according to claim 1, wherein the air in the bypass pipe is forcibly discharged by a pump or the like. 2. The wind instrument sound attenuation method according to claim 1, wherein a material that can be bent freely is used for the bypass pipe. 2. The wind instrument sound attenuation method according to claim 1, wherein a sound-absorbing material is used for the bypass pipe. 3. The wind instrument sound attenuation method according to claim 2, wherein a plurality of flagella-like projections are attached to an outer surface of the bypass tube for maintaining the position of the bypass tube in the resonance tube.

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