| 摘要 |
A mouthpiece practice holder has a base which approximates the envelope of that portion of a brass instrument normally held by the left hand and supports a mouthpiece from a brass instrument for practice playing or buzzing. A mouthpiece rod is adjustably supported from the base by a guide and tightener assembly and a mouthpiece receiver attached to the end of the mouthpiece rod has a taper to slidably receive and retain the mouthpiece. Practice valves may be provided in the base so that the right hand may "finger" the note being played or buzzed as the left hand holds the base. A rimpiece holder supports only a rim from a mouthpiece and may be inserted into the mouthpiece receiver as a substitute for the mouthpiece to permit closer observation of the lips, etc. in relation to the mouthpiece rim as the rim is "buzzed". The guide and tightener assembly may be slightly modified and used to control the tuning of an instrument which is tuned from the mouthpipe or bell. A smooth controlled tuning action is provided by a threaded adjustment nut mounted on a threaded sleeve so that the instrument may be quickly and accurately tuned by moving a telescoping pipe member in or out.
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