pitchyin
pitchyin(
@framesize 2048
@interpolate 1
@maxfrequency 22050
@minfrequency 20
@samplerate 44100
@tolerance 0.15
@mode 0
) -> llll
Generates an audio descriptor to estimate the fundamental frequency of a monophonic buffer. It is an implementation of the Yin algorithm for computations in the time domain.
The resulting buffer will be updated with the following keys:
pitchyin
pitchyin_confidence
info
pitchyin
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
@framesize
[int]: Number of samples in the input frame. (default:2048
).@interpolate
[int]: Enable interpolation. (default:1
).0
: Off1
: On
@maxfrequency
[int/float]: The maximum allowed frequency. (default:22050
).@minfrequency
[int/float]: The minimum allowed frequency. (default:20
).@samplerate
[int]: Sampling rate of the input audio. (default:44100
).@tolerance
[int/float]: Tolerance for peak detection. (default:0.15
).@mode
[int]: Analysis mode. (default:0
).0
: Global1
: Time series2
: Time-tagged time series3
: Buffer
Output
Pitchyin descriptor [llll]
Usage
pitchyin
is meant to be used with the analyze
function:
$buffer = importaudio('singing.wav'); ## input buffer
$descr = pitchyin(); ## generate pitchyin audio descriptor
$buffer.view('before analysis');
$buffer = $buffer.analyze($descr); ## apply analysis
$buffer.view('after analysis')