energyband
energyband(
@startcutofffrequency 0
@stopcutofffrequency 100
@samplerate 44100
@mode 0
) -> llll
Generates an audio descriptor to compute energy in a given frequency band of a spectrum including both start and stop cutoff frequencies.
The resulting buffer will be updated with the following keys:
energyband
info
energyband
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
@startcutofffrequency
[int]: Start frequency from which to sum the energy. (default:0
).@stopcutofffrequency
[int]: Stop frequency to which to sum the energy. (default:100
).@samplerate
[int]: Audio sampling rate. (default:44100
).@mode
[int]: Analysis mode. (default:0
).0
: Global1
: Time series2
: Time-tagged time series3
: Buffer
Output
Energyband descriptor [llll]
Usage
energyband
is meant to be used with the analyze
function:
$buffer = importaudio('singing.wav'); ## input buffer
$descr = energyband(); ## generate energyband audio descriptor
$buffer.view('before analysis');
$buffer = $buffer.analyze($descr); ## apply analysis
$buffer.view('after analysis')