edu.cmu.sphinx.tools.audio
Class AudioData

java.lang.Object
  edu.cmu.sphinx.tools.audio.AudioData

Direct Known Subclasses:

Sinusoid

public class AudioData
extends java.lang.Object

Represents a 16bit, SIGNED_PCM, big endian audio clip with a sample rate specified by AudioFormat.

Constructor Summary

AudioData()
No-arg constructor.

AudioData(javax.sound.sampled.AudioInputStream ais)
Creates a new AudioData from the given AudioInputStream, converting the data to 16bit, big endian, SIGNED_PCM if needed.

AudioData(short[] data, float sampleRate)
Creates a new AudioData with the given data and sample rate.

Method Summary

void	addChangeListener(javax.swing.event.ChangeListener listener) Add a ChangeListener.
short[]	getAudioData() Gets the SIGNED_PCM 16 bit big endian audio data.
javax.sound.sampled.AudioFormat	getAudioFormat() Gets the audio format.
void	removeChangeListener(javax.swing.event.ChangeListener listener) Remove a ChangeListener.
void	setAudioData(short[] data) Sets the audio data and notifies all ChangeListeners.

Methods inherited from class java.lang.Object

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

Constructor Detail

AudioData

public AudioData()

No-arg constructor. Creates an empty clip at 16kHz sample rate.

AudioData

public AudioData(short[] data,
                 float sampleRate)

Creates a new AudioData with the given data and sample rate. Expects the data to be 16bit, big endian, SIGNED_PCM.

Parameters:

data - the audio samples; one sample per element in the array

sampleRate - the sample rate in Hz

AudioData

public AudioData(javax.sound.sampled.AudioInputStream ais)
          throws java.io.IOException

Creates a new AudioData from the given AudioInputStream, converting the data to 16bit, big endian, SIGNED_PCM if needed.

Parameters:

ais - the AudioInputStream

Throws:

java.io.IOException - if problems happen when reading from ais

Method Detail

getAudioData

public short[] getAudioData()

Gets the SIGNED_PCM 16 bit big endian audio data. NOTE: this the actual array held by this object, so only use it as a reference (i.e., don't modify the contents).

Returns:

the SIGNED_PCM 16 bit big endian samples

setAudioData

public void setAudioData(short[] data)

Sets the audio data and notifies all ChangeListeners.

Parameters:

data - the new SIGNED_PCM 16 bit big endian samples

getAudioFormat

public javax.sound.sampled.AudioFormat getAudioFormat()

Gets the audio format.

Returns:

the AudioFormat for the data managed by this object

addChangeListener

public void addChangeListener(javax.swing.event.ChangeListener listener)

Add a ChangeListener.

Parameters:

listener - the listener to add

removeChangeListener

public void removeChangeListener(javax.swing.event.ChangeListener listener)

Remove a ChangeListener.

Parameters:

listener - the listener to remove