biz.source_code.dsp.sound

Class AudioIo

java.lang.Object

biz.source_code.dsp.sound.AudioIo

public class AudioIo
extends Object

Audio i/o utilities.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AudioIo.AudioSignal A class for storing an audio signal in memory.

Method Summary

Modifier and Type	Method and Description
static AudioIo.AudioSignal	loadWavFile(String fileName) Loads an audio signal from a WAV file.
static void	packAudioStreamBytes(AudioFormat format, float[][] inBufs, int inPos, byte[] outBuf, int outPos, int frames) A utility routine to pack the data for a Java Sound audio stream.
static void	play(AudioIo.AudioSignal signal) Plays an audio signal on the default system audio output device.
static void	play(float[] buf, int samplingRate) Plays an audio signal on the default system audio output device.
static void	saveWavFile(String fileName, AudioIo.AudioSignal signal) Writes an audio signal into a WAV file.
static void	saveWavFile(String fileName, AudioIo.AudioSignal signal, int pos, int len) Writes an audio signal into a WAV file.
static void	saveWavFile(String fileName, float[] buf, int samplingRate) Writes an audio signal into a WAV file.
static void	unpackAudioStreamBytes(AudioFormat format, byte[] inBuf, int inPos, float[][] outBufs, int outPos, int frames) A utility routine to unpack the data of a Java Sound audio stream.

Methods inherited from class java.lang.Object

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

Method Detail

saveWavFile

public static void saveWavFile(String fileName,
                               AudioIo.AudioSignal signal,
                               int pos,
                               int len)
                        throws Exception

Writes an audio signal into a WAV file.

Parameters:

fileName - The name of the WAV file.

signal - The audio signal to be written into the WAV file.

pos - Position of the first sample (frame) to be written.

len - Number of samples (frames) to be written.

Throws:

Exception

saveWavFile

public static void saveWavFile(String fileName,
                               AudioIo.AudioSignal signal)
                        throws Exception

Writes an audio signal into a WAV file.

Throws:

Exception

saveWavFile

public static void saveWavFile(String fileName,
                               float[] buf,
                               int samplingRate)
                        throws Exception

Writes an audio signal into a WAV file.

Throws:

Exception

loadWavFile

public static AudioIo.AudioSignal loadWavFile(String fileName)
                                       throws Exception

Loads an audio signal from a WAV file.

Throws:

Exception

play

public static void play(AudioIo.AudioSignal signal)
                 throws Exception

Plays an audio signal on the default system audio output device.

Throws:

Exception

play

public static void play(float[] buf,
                        int samplingRate)
                 throws Exception

Plays an audio signal on the default system audio output device.

Throws:

Exception

unpackAudioStreamBytes

public static void unpackAudioStreamBytes(AudioFormat format,
                                          byte[] inBuf,
                                          int inPos,
                                          float[][] outBufs,
                                          int outPos,
                                          int frames)

A utility routine to unpack the data of a Java Sound audio stream.

packAudioStreamBytes

public static void packAudioStreamBytes(AudioFormat format,
                                        float[][] inBufs,
                                        int inPos,
                                        byte[] outBuf,
                                        int outPos,
                                        int frames)

A utility routine to pack the data for a Java Sound audio stream.