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Compute the acoustic event index using scikit-maad

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

An acoustic event corresponds to the period of the signal above a threshold. An acoustic event could be short (at list one point if rejectDuration is None) or very long (the duration of the entire audio). Two acoustic events are separated by a period with low audio signal (i.e. below the threshold).

Usage

maad_temporal_events(
  wave,
  dB_threshold = 3,
  rejectDuration = 0.1,
  mode = "fast",
  Nt = 512,
  maad = NULL
)

Arguments

wave

A Wave object.

dB_threshold

dB threshold of activity (default = 3).

rejectDuration

Duration of the silence to reject an acoustic event (default = 0.1).

mode

Mode of the envelope calculation. Can be "fast" or "Hilbert".

Nt

Size of each frame. The larger, the highest is the approximation.

maad

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

Value

List of calculated values, comprising:

EVTfrac

fraction of points above the threshold for each frequency bin.

EVTcount

total number of points above the threshold for each frequency bin.

EVTmean

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

EVN

logical vector or matrix with 1 corresponding to event position.

Details

For addition documentation see https://scikit-maad.github.io/generated/maad.features.temporal_events.html towsey2013sonicscrewdriver qutsonicscrewdriver.

References