聲帶長短及發聲問題

假聲

學唱歌的人可以訓練不同方式使用聲帶. 發出假聲時有部分肌肉是放鬆了不用, 而通過聲帶的氣流比平時急速, 所以高音很多.
維基百科中文的解釋太少, 參考英文版:

http://en.wikipedia.org/wiki/Falsetto
In falsetto, the vocal folds are seen to be blown apart and a permanent oval orifice is left in the middle between the edges of the two folds through which a certain volume of air escapes continuously as long as the register is engaged (the singer is singing using the voice). The arytenoid cartilages are held in firm apposition in this voice register also. The length or size of the oval orifice or separation between the folds can vary, but it is known to get bigger in size as the pressure of air pushed out is increased. [1]
The folds are made up of elastic and fatty tissue. The folds are covered on the surface by laryngeal mucous membrane which is supported deeper down underneath it by the innermost fibres of the thyro-arytenoid muscle. In falsetto the extreme membranous edges, ie the edges furthest away from the middle of gap between the folds appear to be the only parts vibrating. The mass corresponding to the innermost part of the thyro-arytenoid muscle remains still and motionless.
Some singers feel a sense of muscular relief when they change from chest voice to falsetto.[1]

2007-07-12 09:51:44 補充：
回答是我自己由英本譯出來的, 只譯了有關你提問既重點. 老實講咁多醫學名詞好難譯得正確, 係在下功力所限, sorry.

2007-07-12 09:54:40 補充：
不論聲帶長定短, 人都可以運用假聲唱歌, 都係同一條聲帶, 係有d肌肉放鬆和氣流運用唔同左, 而唔係聲帶長定短既關係.