Shimmer

From Glottopedia
Jump to navigation Jump to search

Definition

Fluctuations in amplitude. Like jitter, measures of shimmer serve as an index of vocal stability. Excessive shimmer has been tied to the perception of hoarseness. A mean amplitude difference of 0.7 dB or variation less than about 7% of the mean amplitude may be expected in a sustained phonation produced by a normal speaker.

Links

STUB