PZTF

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PZTF

pole-zero model estimation

Usage:

[SPU PZTF SP DF F0 FMIN FMAX NC NN ND IINT IALG OUT F0 ENV C NZ NP F R H E]

Inputs:
Name Type Description Default
SP vec log. amplitude spectrum no default
DF num frequency resolution in Hz no default
F0 num fundamental frequency in Hz estimated if not supplied
F1,F2 num component search range for f0 estimation in Hz 75-4000Hz
NC num number of f0 components to use for harmonic mean 5
NN num number of numerator coefficients (>0) no default
ND num number of denominator coefficients (>1) no default
IINT num/str envelope interpolation method (0=Linear, 1=Qaudratic, 2=SPLine) 0=Linear
IALG num/str pole-zero algorithm (0=WLLS, 1=ND) 1=ND
Outputs:
Name Type Description
F0 num fundamental frequency in Hz (input or estimated, 0 for error)
ENV vec log. spectrum envelope
C vec numerator and denominator coefficients
NZ num number of zeros
NP num number of poles
F vec frequency of zeros and poles
R vec radius of zeros and poles
H vec log. amplitude response
E num error (avr((ENV - H)^2)
See also

<SP-atoms>