| 摘要 |
The invention relates to an instrument of the brass family, particularly a hunting horn, provided with a mouth piece and an inlet pipe which allows an improvement of the sound quality as well as a reduction of the physical effort of the user. The mouth piece (21) has an inlet cup (7) presenting a first conical surface with slight conicity and a second surface with pronounced conicity. This cup is followed by a zone with minimum cross-sectional area (22) formed preferably by a cylindrical section and followed by a divergent cone (14). The tail (4) of the mouth piece has an external conical surface (5) nested in a convergent inlet cone (26) of the instrument. Said inlet cone forms together with the outlet cone (14) of the mouth piece a chamber (31) wherein the sound is developed. This chamber is followed by a second cylindrical section (29).
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