Acoustic coupling

From Glottopedia
Revision as of 13:39, 17 January 2008 by Luo (talk | contribs) (from Utrecht Lexicon of Linguistics)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Acoustic coupling refers to acoustic impedance: the degree to which sound is transmitted across some acoustic barrier.

Comments

This can be exemplified by keeping your mouth and nose closed and producing a voiced sound. No air escapes, but you can hear a sound because the sound waves produced at the glottis can vibrate through the cheeks. In fricatives, the front and back cavities are not well coupled, and there is a large acoustic impedance at the constriction. Although air flows through the constriction, relatively little sound is transmitted to or from the back cavity. This means that the resonant frequencies of the back cavity have relatively little effect on the spectrum of the fricative.

Link

Utrecht Lexicon of Linguistics