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

public class | source

BeatTracking

Performs automatic beat tracking

Static Method Summary

Static Public Methods
public static	trackBeat(events: Array, eventsScores: Array, tempoList: Array, params: Object): Array Perform beat tracking on a array of onsets

Static Public Methods

public static trackBeat(events: Array, eventsScores: Array, tempoList: Array, params: Object): Array source

Perform beat tracking on a array of onsets

Params:

Name	Type	Attribute	Description
events	Array		the array of onsets to beat track
eventsScores	Array		the array of corresponding salience values
tempoList	Array		the array of tempo hypothesis
params	Object	optional default: {}	parameters
params.initPeriod	Number	optional default: 5	duration of the initial section
params.thresholdBI	Number	optional default: 0.02	for the purpose of removing duplicate agents, the default JND of IBI
params.thresholdBT	Number	optional default: 0.04	for the purpose of removing duplicate agents, the default JND of phase
params.expiryTime	Number	optional default: 10	the time after which an Agent that has not accepted any beat will be destroyed
params.toleranceWndInner	Number	optional default: 0.04	the maximum time that a beat can deviate from the predicted beat time without a fork occurring
params.toleranceWndPre	Number	optional default: 0.15	the maximum amount by which a beat can be earlier than the predicted beat time, expressed as a fraction of the beat period
params.toleranceWndPost	Number	optional default: 0.3	the maximum amount by which a beat can be later than the predicted beat time, expressed as a fraction of the beat period
params.correctionFactor	Number	optional default: 50	correction factor for updating beat period
params.maxChange	Number	optional default: 0.2	the maximum allowed deviation from the initial tempo, expressed as a fraction of the initial beat period
params.penaltyFactor	Number	optional default: 0.5	factor for correcting score, if onset do not coincide precisely with predicted beat time

Return:

Array

agents - agents array