guessPhase_GL: Guess phase GL

In tatters/soundgen: Sound Synthesis and Acoustic Analysis

Guess phase GL

Description

Internal soundgen function

Usage

guessPhase_GL(
  spec,
  phase,
  nIter,
  samplingRate,
  overlap,
  wn,
  step_points,
  verbose = TRUE,
  plotError = TRUE
)

Arguments

spec	the spectrogram that is to be transform to a time series: numeric matrix with frequency bins in rows and time frames in columns
phase	an initial guess at the phase: numeric matrix of the same dimensions as spec
nIter	the number of iterations of the GL algorithm (Griffin & Lim, 1984), 0 = don't run
samplingRate	sampling rate of x (only needed if x is a numeric vector)
overlap	overlap between successive FFT frames, %
wn	window type accepted by ftwindow, currently gaussian, hanning, hamming, bartlett, rectangular, blackman, flattop
step_points	STFT step in points
verbose	if TRUE, prints estimated time left every 10% of GL iterations
plotError	if TRUE, produces a scree plot of squared error over GL iterations (useful for choosing 'nIter')

Details

Uses the iterative method proposed by Griffin & Lim (1984) to guess the phase of a magnitude spectrogram.

Value

Returns a matrix of the same dimensions as 'spec' containing the guessed phase.

tatters/soundgen documentation built on Aug. 22, 2023, 4:24 p.m.