AUTOBW

[GENERIC-FUNCTION]


OM-Chant
Function Reference
ARGUMENTS:
  - FREQLIST formants' frequecy list [default = (609 1000 2450 2700 3240)]
&optional
 
  - REF-CURVE 3 points of the reference function bw(f) [default = ((200 75) (500 75) (4000 150))]

Description:

AUTOBW calculates the bandwidth of the formants depending on the frequencies (<freqlist>), using a global parabolic function determined by 3 reference (freq bandwidth) pairs (<ref-curve>).

The result is a list of calculated formant bandwidths.

This function is adapted from the original CHANT rules as implemented in CHANT by X. Rodet and Y. Potard (1984) ('atb' flag) and in the chant_autobw object for Max by F. Iovino and, G. Eckel (1994).
Documentation adapted from the CHANT manual, P.-F. Baisnée and the Chant group, 1985.



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