What are the characteristics of falsetto voice?
Falsetto voice is characterised by a very high fundamental frequency and a rather weak energy. The vocal folds are at a very high tension, and rather rigid, so that only the edges of the folds can actually vibrate. This leads to a much reduced mass of fold involved in vibrating and very short vibration cycles. The high tension also reduced the effectiveness of closure, and the closed phase and open phase are approximately equal.
