beatSpectrum: Computes a beat spectrum

In sonicscrewdriver: Bioacoustic Analysis and Publication Tools

Computes a beat spectrum

Description

Beat spectra represent the periodicity in signal amplitude. It is computed by performing a continuous wavelet transform on the envelope of a preprocessed signal, and processing the average power per frequency band.

Usage

beatSpectrum(wave, min_period = 0.005, max_period = 30, dj = 1/32, ...)

Arguments

wave	an R object or path to a wave file
min_period	the minimal rythmicity period expected, in seconds
max_period	the maximal rythmicity period expected, in seconds
dj	the frequency resolution of the cwt (in voices per octave)
...	extra arguments passed to analyze.wavelet()

Value

a spectrum as a data frame. It contains two columns: power and period. The number of rows depend on the resolution and frequency range.

Author(s)

Quentin Geissmann

Examples

## Not run: 
beatSpectrum(sheep)
beatSpectrum(sheep, min_period=0.005, max_period=30, dj=1/32)

## End(Not run)

sonicscrewdriver documentation built on May 29, 2024, 3:39 a.m.