Stridency

粗糙度

In phonetics, a scale used to characterize sounds (specifically, fricatives) in auditory terms on the basis of their perceived pitch and loudness; also called sibilance. Sounds such as [s] are higher on a stridency scale, being relatively high-pitched and intense (they display more energy at higher frequencies); sounds such as [f] are much lower (displaying more energy at lower frequencies).

语音学根据听觉上感知的音高和响度来描写语音（特别是擦音）的一个量级；也称作咝音性。像[s]这类音的粗糙度较高，因为音高和音强都较高（高频部分集中较多能量）；像[f]这类音的粗糙程度则低得多（低频部分集中较多能量）。