import TempoInduction from 'music-tempo/src/TempoInduction.js'

public class | source

TempoInduction

Performs tempo induction by finding clusters of similar inter-onset intervals (IOIs)

Static Method Summary

Static Public Methods
public static	calculateScore(clusters: Object, params: Object): {clScores: Array, clScoresIdxs: Array} Score intervals
public static	createTempoList(clusters: Object, params: Object): Array Get array of tempo hypotheses
public static	mergeClusters(clusters: Object, params: Object): {clIntervals: Array, clSizes: Array} Merge similar intervals
public static	processRhythmicEvents(events: Array, params: Object): {clIntervals: Array, clSizes: Array} Find clusters

Score intervals

Name	Type	Attribute	Description
clusters	Object		object with clusters
clusters.clIntervals	Array		clusters IOIs array
clusters.clSizes	Array		clusters sizes array
params	Object	optional default: {}	parameters
params.widthTreshold	Number	optional default: 0.025	the maximum difference in IOIs which are in the same cluster
params.maxTempos	Number	optional default: 10	initial amount of tempo hypotheses

{clScores: Array, clScoresIdxs: Array}

object with intervals scores

Get array of tempo hypotheses

Name	Type	Attribute	Description
clusters	Object		object with clusters
clusters.clIntervals	Array		clusters IOIs array
clusters.clSizes	Array		clusters sizes array
clusters.clScores	Array		clusters scores array
clusters.clScoresIdxs	Array		clusters scores indexes array
params	Object	optional default: {}	parameters
params.widthTreshold	Number	optional default: 0.025	the maximum difference in IOIs which are in the same cluster
params.minBeatInterval	Number	optional default: 0.3	the minimum inter-beat interval (IBI) (0.30 seconds == 200 BPM)
params.maxBeatInterval	Number	optional default: 1	the maximum inter-beat interval (IBI) (1.00 seconds == 60 BPM)

tempoList - tempo hypotheses array

Merge similar intervals

Name	Type	Attribute	Description
clusters	Object		object with clusters
clusters.clIntervals	Array		clusters IOIs array
clusters.clSizes	Array		clusters sizes array
params	Object	optional default: {}	parameters
params.widthTreshold	Number	optional default: 0.025	the maximum difference in IOIs which are in the same cluster

{clIntervals: Array, clSizes: Array}

object with clusters

Find clusters

Name	Type	Attribute	Description
events	Array		the onsets from which the tempo is induced
params	Object	optional default: {}	parameters
params.widthTreshold	Number	optional default: 0.025	the maximum difference in IOIs which are in the same cluster
params.maxIOI	Number	optional default: 2.5	the maximum IOI for inclusion in a cluster
params.minIOI	Number	optional default: 0.07	the minimum IOI for inclusion in a cluster

{clIntervals: Array, clSizes: Array}

object with clusters