getMelSpec: Mel-transformed spectrogram

In soundgen: Sound Synthesis and Acoustic Analysis

Mel-transformed spectrogram

Description

Internal soundgen function

Usage

getMelSpec(
  s,
  samplingRate = NULL,
  windowLength = 40,
  overlap = 50,
  step = NULL,
  dynamicRange = 80,
  maxFreq = NULL,
  specPars = list(),
  plot = FALSE
)

Arguments

s	input sound (path to a .wav file or numeric vector)
samplingRate	if one or both inputs are numeric vectors, specify sampling rate, Hz. A vector of length 2 means the two inputs have different sampling rates, in which case spectrograms are compared only up to the lower Nyquist frequency
windowLength	length of FFT window, ms
overlap	overlap between successive FFT frames, %
step	you can override overlap by specifying FFT step, ms (NB: because digital audio is sampled at discrete time intervals of 1/samplingRate, the actual step and thus the time stamps of STFT frames may be slightly different, eg 24.98866 instead of 25.0 ms)
dynamicRange	parts of the spectra quieter than -dynamicRange dB are not compared
maxFreq	parts of the spectra above maxFreq Hz are not compared
specPars	a list of parameters passed to melfcc
plot	if TRUE, plots the spectrum

Details

Takes a .wav file or a waveform as numeric vector + samplingRate and returns mel-transformed spectrum (auditory spectrum). Calls melfcc. See compareSounds.

soundgen documentation built on Sept. 12, 2024, 6:29 a.m.