| 摘要 |
The disclosed mute is a mouthpiece provided with a diaphragm (1) limiting the passage of the volume of air and of the sound, in front of which a sound expansion chamber (2) is mounted wherein the energy is dispersed, letting only the low amplitude waves pass through the diaphragm (1). The air volume in said expansion chamber (2) makes the reed (4) vibrate more easily, particularly for the low-pitched notes. Furthermore, the adjustment of the air volume within said expansion chamber (2) provides for the accuracy of the tones. This mute may be provided with a sound compression channel (3) arranged before the expansion chamber (2), which favours the passage through the diaphragm (1) of high frequencies to the detriment of low frequencies, thereby facilitating the octave skip. The mute is provided with air discharge channels (5-10) which are independent of the sound circuit.
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