求救！！有關單簧管

單簧管與別的管樂器剛好相反, 你愈大力吹愈flat
請看以下一段有關影響吹奏單簧管sharp和flat 的因素
•Pulling barrel (then middle joint)=flatter, pushing in=sharper
•Barrel length: Shorter and longer barrels are available
•Range: Throat tones are sharp on almost every instrument, especially the A and B-flat. Altissimo register=sharp in more experienced players, though young players will often be a little flat when learning these notes.
•Embouchure: biting or pinching=sharp, loose=flat
•Temperature: cold=flat, hot=sharp
•Dynamic level: loud=flat, soft=sharp
•Reed strength: soft reed=flat, hard reed=sharp
•Angle of entry: held too far out=flat, held too close=sharp
•Lay of the mouthpiece: closed=sharp, open=flat

圖片參考：http://www.music.vt.edu/musicdictionary/textc/images/clarinet_range.jpg


你又可以參考以下連結的各種指法看看有沒有改善
http://www.wfg.woodwind.org/clarinet/cl_alt_2.html