MAKE-SPEC-ENV

[GENERIC-FUNCTION]


OM-SuperVP
Function Reference
ARGUMENTS:
  - FORMANTS list of formant values [default = ((800 0 80))]
&optional
 
  - RES resolution [default = 8000]
  - MAXF max frequency [Hz] [default = 8000]
  - DB amplitude units [default = T]

Description:

Builds a spectral envelope from a list of formants.

The spectral envelope is returned as a BPF object.

Formant values must be formatted as '((frequency1 amplitude1 bandwidth1) (frequency2 amplitude2 bandwidth2) ...)
Amplitudes are expected in dB.

<res> is the number of points in the envelope.
<maxf> is the value in Hz of the maximum frequency in the envelope.

If <db> is selected (T) amplitudes are returned in dB, else they are returned as linear values.

This function is inspired from initial works by Ph. Depalle and X. Rodet.



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