Spectral slope
Revision as of 17:55, 26 February 2009 by Haspelmath (talk | contribs)
The amplitude of the harmonics resulting from vocal fold vibration falls off by 12 dB per octave. This means that each time the frequency doubles, the amplitude of the harmonics decreases by 12 dB. This is called the spectral slope (or tilt or roll-off) in the source spectrum.
Links
Utrecht Lexicon of Linguistics
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