| 摘要 |
<p>PURPOSE:To obtain tone quality of stable pitch with transparency by providing one trill tone hole at a specific position of a main joint and setting the opening extent of a normally closed type trill cup to two high and low extends. CONSTITUTION:One trill hole 10 is formed at the intermediate part of the main joint A close to the heat joint B between the positions where a D trill hole and a D# trill hole are normally provided. The trill cup 11 which opens and closes the hole 10 has two kinds of opening extents up to a position (a) with a D trill key tr1 and a position (b) with a D# trill key tr2. Consequently, D' and D''# tones are easily generated, the pitch is stabilized, and clear tone quality with small noise is obtained.</p> |
