Patent ID: 7402738

Claim:
A wind musical instrument for producing tones through breath of a human player, comprising: a pipe structure defining a column of air therein, permitting said human player to excite the column of air for vibrations, and including a slide varying the length of said column of air through elongation and shrinkage thereof for changing the pitch of said tones; and a supporting system assisting said human player in changing said pitch of said tones, and including a manipulating board having a manipulator moved by said human player so as to indicate a target length of said column of air and a signal generator producing a detecting signal representative of said target length, a driving mechanism connected to said slide and responsive to a driving signal so as to elongate and shrink said slide, and a controller connected to said signal generator and said driving mechanism and supplying said driving signal to said driving mechanism so as to elongate and shrink said slide until said column of air becomes said target length.