Skip to main content

strongdecay​

strongdecay(
    @mode 0
) -> llll

Generates an audio descriptor to compute the strong decay of a buffer. The strong decay is built from the non-linear combination of the signal energy and the signal temporal centroid, the latter being the balance of the absolute value of the signal. A signal containing a temporal centroid near its start boundary and a strong energy is said to have a strong decay.

The resulting buffer will be updated with the following keys:

  • strongdecay
info

strongdecay is a mirror implementation of the same algorithm in the Essentia library. For more details on the algorithm, please check the Essentia Algorithms reference.

Arguments​

  • @mode [int]: Analysis mode. (default: 0).
    • 0: Global
    • 1: Time series
    • 2: Time-tagged time series
    • 3: Buffer

Output​

Strongdecay descriptor [llll]

Usage​

strongdecay is meant to be used with the analyze function:

$buffer = importaudio('singing.wav'); ## input buffer
$descr = strongdecay(); ## generate strongdecay audio descriptor
$buffer.view('before analysis');
$buffer = $buffer.analyze($descr); ## apply analysis
$buffer.view('after analysis')