com.meapsoft.composers
Class HMMComposer

java.lang.Object
  com.meapsoft.MEAPUtil
      com.meapsoft.composers.Composer
          com.meapsoft.composers.VQComposer
              com.meapsoft.composers.HMMComposer

All Implemented Interfaces:

java.lang.Runnable

public class HMMComposer

extends VQComposer

Program that learns a simple fully connected hidden Markov model from a FeatFile and generates chunk sequences from it. This doesn't produce very compelling compositions because the markov assumption (that the currect chunk only depends on the previous chunk) is not at all valid for most music which has a more complex structure. Later versions will support more constrained HMM topologies that should make for more interesting compositions. All about HMMs: http://en.wikipedia.org/wiki/Hidden_Markov_model

Field Summary

static java.lang.String

description

Fields inherited from class com.meapsoft.composers.VQComposer

beatsPerCodeword, cbSize, debug, dist, featdim, featsToQuantize, outFileName, templateChunks, trainFile

Fields inherited from class com.meapsoft.MEAPUtil

bigEndian, bitsPerSamp, exceptionHandler, frameLatency, mixerToUse, numChannels, progress, samplingRate, signed, slash, stereo, verbose, version, writeMEAPFile

Constructor Summary

HMMComposer(FeatFile trainFN, EDLFile outFN)

HMMComposer(java.lang.String[] args)

Method Summary

EDLFile	compose() Compose an EDLFile.
static void	main(java.lang.String[] args)
void	printUsageAndExit()
void	setSequenceLength(int len)

Methods inherited from class com.meapsoft.composers.VQComposer

learnCodebook, quantizeChunk, setBeatsPerCodeword, setCodebookSize, setFeatsToQuantize, setup

Methods inherited from class com.meapsoft.composers.Composer

addCommand, addCommandsToAllEDLChunks, addCommandsToAllEDLChunks, addCommandToAllEDLChunks, description, doComposer, parseCommands, printCommandLineOptions, run

Methods inherited from class com.meapsoft.MEAPUtil

bytes2doubles, doubles2bytes, getPaths, getProgress, openAudioWriter, openAudioWriter, openInputStream, openInputStream, parseChunkDist, parseFeatDim, parseFeatureExtractor, parseFeatureExtractor, printCommandLineOptions, setExceptionHandler

Methods inherited from class java.lang.Object

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

Field Detail

description

public static java.lang.String description

Constructor Detail

HMMComposer

public HMMComposer(FeatFile trainFN,
                   EDLFile outFN)

HMMComposer

public HMMComposer(java.lang.String[] args)

Method Detail

printUsageAndExit

public void printUsageAndExit()

Overrides:

printUsageAndExit in class VQComposer

setSequenceLength

public void setSequenceLength(int len)

compose

public EDLFile compose()

Description copied from class: Composer

Compose an EDLFile. This is where the magic happens.

Overrides:

compose in class VQComposer

main

public static void main(java.lang.String[] args)