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Compute the spectral activity using scikit-maad

Source: R/scikit-maad-indices.R
maad_spectral_activity.Rd

Acoustic activity corresponds to the portion of the spectrogram above a threshold frequency per frequency along time axis (Towsey 2017) .

Usage

maad_spectral_activity(object, dB_threshold = 6, maad = NULL)

Arguments

object

A Wave object or a spectrogram_maad object.

dB_threshold

dB threshold of activity (default = 6).

maad

An optional maad object. If not provided, one will be created using getMaad().

Value

The function computes for each frequency bin:

ACTfract

Proportion (fraction) of points above the threshold.

ACTcount

Total number of points above the threshold.

ACTmean

Mean value (in dB) of the portion of the signal above the threshold.

References

Towsey M (2017). “The calculation of acoustic indices derived from long-duration recordings of the natural environment.” Queensland University of Technology. https://eprints.qut.edu.au/110634/1/QUTePrints110634_TechReport_Towsey2017August_AcousticIndices%20v3.pdf.