Description:
AUTOAMP calculates the amplitude of the formants depending on the frequencies (<freqlist>) and bandwidths (<bwlist>), taking into account the interactions between formants (reinforcement of the amplitudes of formants approaching one another).
It also scales the formant amplitudes with a function that varies as 1/f (approximation of a natural voice spectrum).
The result is a list of calculated formant amplitudes.
This function is adapted from the original CHANT rules as implemented in CHANT by X. Rodet and Y. Potard (1984) ('ata' flag) and in the chant_autoamp object for Max by F. Iovino and, G. Eckel (1994).
Documentation adapted from the CHANT manual, P.-F. Baisnée and the Chant group, 1985.
|