metdetection.meter.lpcfg

Class MetricalLpcfgGenerator

java.lang.Object

metdetection.meter.lpcfg.MetricalLpcfgGenerator

public class MetricalLpcfgGenerator
extends java.lang.Object

The MetricalLpcfgGenerator class will generate and calculate probabilities for a MetricalLpcfg.

Author:

Andrew McLeod - 23 February, 2016

Field Summary

Fields

Modifier and Type	Field and Description
private int	beatsPerMeasure The number of beats per measure, used in the parseSong(JointModel, TimeTracker) method.
private MetricalLpcfg	grammar The grammar which we are building.
private int	notes32PerMeasure The number of 32nd notes per measure, used in the parseSong(JointModel, TimeTracker) method.
private int	subBeatsPerBeat The number of subBeats per beat, used in the parseSong(JointModel, TimeTracker) method.

Constructor Summary

Constructors

Constructor and Description
MetricalLpcfgGenerator() Create a new default MetricalGrammarGenerator.

Method Summary

Methods

Modifier and Type	Method and Description
private void	addNote(MidiNote note, java.util.List<Beat> beats, MetricalLpcfgQuantum[][] quantums, int[] notes32PerMeasure) Add the given note into our tracking arrays.
private void	addQuantum(MetricalLpcfgQuantum quantum, MetricalLpcfgQuantum[][] quantums, int measure, int beat, int notes32PerMeasure) Add the given quantum into the quantums array.
MetricalLpcfg	getGrammar() Get the MetricalGrammar we have generated.
int	getTerminalLength() Get the current terminal length.
void	parseSong(JointModel jm, TimeTracker tt) Parse a song, given its JointModel (which has already been run), and its TimeTracker.
private void	updateTimeSignature(TimeSignature timeSig) Update the time signature tracking fields based on the given TimeSignature..

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

grammar

private final MetricalLpcfg grammar

The grammar which we are building.

beatsPerMeasure

private int beatsPerMeasure

The number of beats per measure, used in the parseSong(JointModel, TimeTracker) method.

subBeatsPerBeat

private int subBeatsPerBeat

The number of subBeats per beat, used in the parseSong(JointModel, TimeTracker) method.

notes32PerMeasure

private int notes32PerMeasure

The number of 32nd notes per measure, used in the parseSong(JointModel, TimeTracker) method.

Constructor Detail

MetricalLpcfgGenerator

public MetricalLpcfgGenerator()

Create a new default MetricalGrammarGenerator.

Method Detail

parseSong

public void parseSong(JointModel jm,
             TimeTracker tt)

Parse a song, given its JointModel (which has already been run), and its TimeTracker.

Parameters:

jm - The JointModel, which has already been run. We will get the voices and beats from here.

tt - The TimeTracker, which will be used to get gold standard beat divisions.

addNote

private void addNote(MidiNote note,
           java.util.List<Beat> beats,
           MetricalLpcfgQuantum[][] quantums,
           int[] notes32PerMeasure)

Add the given note into our tracking arrays.

Parameters:

note - The note we want to add into the tracking arrays.

beats - The beats of the song we are parsing.

quantums - The quantums tracking array, indexed first by measure and then by quantum.

notes32PerMeasure - The number of quantums per measure for each measure.

addQuantum

private void addQuantum(MetricalLpcfgQuantum quantum,
              MetricalLpcfgQuantum[][] quantums,
              int measure,
              int beat,
              int notes32PerMeasure)

Add the given quantum into the quantums array.

Parameters:

quantum - The quantum we want to add into the array. Should be either ONSET or TIE.

quantums - The quantums tracking array, indexed first by measure and then by quantum.

measure - The measure at which we want to add the given quantum.

beat - The beat at which we want to add the given quantum.

notes32PerMeasure - The number of quantums in the given measure of the song.

updateTimeSignature

private void updateTimeSignature(TimeSignature timeSig)

Update the time signature tracking fields based on the given TimeSignature..

Parameters:

timeSig - The new TimeSignature we will use.

getTerminalLength

public int getTerminalLength()

Get the current terminal length.

Returns:

The current terminal length.

getGrammar

public MetricalLpcfg getGrammar()

Get the MetricalGrammar we have generated.

Returns:

grammar