getPitchCep: Cepstral pitch tracker

In tatters/soundgen_beta: Parametric Voice Synthesis

Description

Internal soundgen function.

Usage

getPitchCep(frame, cepZp, samplingRate, pitchFloor, pitchCeiling, cepThres,
  cepSmooth = NULL, nCands)

Arguments

frame	the real part of the spectrum of a frame, as returned by fft
cepZp	zero-padding of the spectrum used for cepstral pitch detection (final length of spectrum after zero-padding in points, e.g. 2 ^ 13)
samplingRate	sampling rate (Hz)
pitchFloor	absolute bounds for pitch candidates (Hz)
pitchCeiling	absolute bounds for pitch candidates (Hz)
cepThres	(0 to 1) separate voicing thresholds for detecting pitch candidates with three different methods: autocorrelation, cepstrum, and BaNa algorithm (see Details). Note that HNR is calculated even for unvoiced frames.
cepSmooth	the width of smoothing interval (in bins) for finding peaks in the cepstrum. Defaults to 31 for sampling rate 44100 and smaller odd numbers for lower values of sampling rate
nCands	maximum number of pitch candidates per method (except for dom, which returns at most one candidate per frame), normally 1...4

Details

Attempts to find F0 of a frame by looking for peaks in the cepstrum. See http://www.phon.ucl.ac.uk/courses/spsci/matlab/lect10.html

Value

Returns either NULL or a dataframe of pitch candidates.

tatters/soundgen_beta documentation built on May 14, 2019, 9 a.m.