SpectralEntropy:
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Classes (extension) | UGens > Analysis

SpectralEntropy : MultiOutUGen : UGen : AbstractFunction : Object
ExtensionExtension

Spectral feature extraction
 

Description

Spectral Entropy, with a choice of number of sub-bands. If one band, a measure of general peakiness of the spectral distribution.

See: SPECTRAL ENTROPY AS SPEECH FEATURES FOR SPEECH RECOGNITION Aik Ming Toh, Roberto Togneri and Sven Nordholm http://www.ee.uwa.edu.au/~roberto/research/theses/tr05-01.pdf

Pass an FFT in.

Class Methods

SpectralEntropy.kr(fft, fftsize: 2048, numbands: 1)

Arguments:

fft

input fft chain, that is, from an FFT UGen

fftsize

Size of FFT buffer must be known in advance for pre-calculation

numbands

Number of sub-bands for entropy calculation; spectral bins are collected in sub-bands, and the number of outputs of the UGen is numbands

Inherited class methods

Instance Methods

Inherited instance methods

Examples

helpfile source: /usr/local/share/SuperCollider/Extensions/SC3plugins/SCMIRUGens/HelpSource/Classes/SpectralEntropy.schelp
link::Classes/SpectralEntropy::