StrongDecay¶

streaming mode | Envelope/SFX category

Inputs¶

signal (real) - the input audio signal

Outputs¶

strongDecay (real) - the strong decay

Parameters¶

sampleRate (real ∈ (0, ∞), default = 44100) :
the sampling rate of the audio signal [Hz]

Description¶

This algorithm computes the Strong Decay of an audio signal. 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.

This algorithm returns 0.0 for zero signals (i.e. silence), and throws an exception when the signal’s size is less than two as it can’t compute its centroid.

References:: [1] F. Gouyon and P. Herrera, “Exploration of techniques for automatic labeling of audio drum tracks instruments,” in MOSART: Workshop on Current Directions in Computer Music, 2001.

Source code¶

C++ source code

C++ header file