API¶
All functionality in pysptk.sptk
is directly accesible from the top-level pysptk.*
namespace.
Library routines¶
agexp |
Magnitude squared generalized exponential function |
gexp |
Generalized exponential function |
glog |
Generalized logarithmic function |
mseq |
M-sequence |
Adaptive cepstrum analysis¶
acep |
Adaptive cepstral analysis |
agcep |
Adaptive generalized cepstral analysis |
amcep |
Adaptive mel-cepstral analysis |
Mel-generalized cepstrum analysis¶
mcep |
Mel-cepstrum analysis |
gcep |
Generalized-cepstrum analysis |
mgcep |
Mel-generalized cepstrum analysis |
uels |
Unbiased estimation of log spectrum |
lpc |
Linear prediction analysis |
LPC, LSP and PARCOR conversions¶
lpc2c |
LPC to cepstrum |
lpc2lsp |
LPC to LSP |
lpc2par |
LPC to PARCOR |
par2lpc |
PARCOR to LPC |
lsp2sp |
LSP to spectrum |
Mel-generalized cepstrum conversions¶
mc2b |
Mel-cepsrum to MLSA filter coefficients |
b2mc |
MLSA filter coefficients to mel-cesptrum |
c2acr |
Cepstrum to autocorrelation |
c2ir |
Cepstrum to impulse response |
ic2ir |
Impulse response to cepstrum |
c2ndps |
Cepstrum to Negative Derivative of Phase Spectrum (NDPS) |
ndps2c |
Cepstrum to Negative Derivative of Phase Spectrum (NDPS) |
gc2gc |
Generalized cepstrum transform |
gnorm |
Gain normalization |
ignorm |
Inverse gain normalization |
freqt |
Frequency transform |
mgc2mgc |
Mel-generalized cepstrum transform |
mgc2sp |
Mel-generalized cepstrum transform |
mgclsp2sp |
MGC-LSP to spectrum |
Window functions¶
blackman |
Blackman window |
hamming |
Hamming window |
hanning |
Hanning window |
bartlett |
Bartlett window |
trapezoid |
Trapezoid window |
rectangular |
Rectangular window |
Waveform generation filters¶
poledf |
All-pole digital filter |
lmadf |
LMA digital filter |
lspdf |
LSP synthesis digital filter |
ltcdf |
All-pole lattice digital filter |
glsadf |
GLSA digital filter |
mlsadf |
MLSA digital filter |
mglsadf |
MGLSA digital filter |
Utilities for waveform generation filters¶
poledf_delay |
Delay for poledf |
lmadf_delay |
Delay for lmadf |
lspdf_delay |
Delay for lspdf |
ltcdf_delay |
Delay for ltcdf |
glsadf_delay |
Delay for glsadf |
mlsadf_delay |
Delay for mlsadf |
mglsadf_delay |
Delay for mglsadf |