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spectralflatness​

spectralflatness(
    @mode 0
) -> llll

Generates an audio descriptor to calculate the spectral flatness of a buffer, defined as the ratio between the spectrum's geometric mean and arithmetic mean.

The resulting buffer will be updated with the following keys:

  • spectralflatness
info

spectralflatness 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​

Spectralflatness descriptor [llll]

Usage​

spectralflatness is meant to be used with the analyze function:

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