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soundgen (version 2.3.0)

.getPitchZc: Zero-crossing rate per sound

Description

Internal soundgen function called by getPitchZc.

Usage

.getPitchZc(
  audio,
  pitchFloor,
  pitchCeiling,
  zcThres,
  zcWin = 5,
  silence = 0.04,
  env = NULL,
  envWin = 5,
  certMethod = c("autocor", "variab")[2]
)

Arguments

audio

a list returned by readAudio

pitchFloor

absolute bounds for pitch candidates (Hz)

pitchCeiling

absolute bounds for pitch candidates (Hz)

zcThres

pitch candidates with certainty below this value are treated as noise and set to NA (0 = anything goes, 1 = pitch must be perfectly stable over zcWin)

zcWin

certainty in pitch candidates depends on how stable pitch is over zcWin glottal cycles (odd integer > 3)

silence

minimum root mean square (RMS) amplitude, below which pitch candidates are set to NA (NULL = don't consider RMS amplitude)

env

precalculated envelope (when called internally by .analyze())

envWin

window length for calculating RMS envelope, ms

certMethod

method of calculating pitch certainty: 'autocor' = autocorrelation of pitch estimates per zc over window (a measure of curve smoothness), 'variab' = variability of pitch estimates per zc over window