org.datavec.audio

Class Wave

java.lang.Object

org.datavec.audio.Wave

All Implemented Interfaces:

java.io.Serializable

public class Wave
extends java.lang.Object
implements java.io.Serializable

Read WAVE headers and data from wave input stream

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Wave() Constructor
Wave(java.io.InputStream inputStream) Constructor
Wave(java.lang.String filename) Constructor
Wave(WaveHeader waveHeader, byte[] data) Constructor

Method Summary

Modifier and Type	Method and Description
byte[]	getBytes() Get the wave data in bytes
byte[]	getFingerprint()
FingerprintSimilarity	getFingerprintSimilarity(Wave wave)
double[]	getNormalizedAmplitudes()
short[]	getSampleAmplitudes() Get the amplitudes of the wave samples (depends on the header)
Spectrogram	getSpectrogram() Get the wave spectrogram
Spectrogram	getSpectrogram(int fftSampleSize, int overlapFactor) Get the wave spectrogram
WaveHeader	getWaveHeader() Get the wave header
void	leftTrim(double second) Trim the wave data from beginning
void	leftTrim(int numberOfSample) Trim the wave data from beginning
float	length() Length of the wave in second
void	rightTrim(double second) Trim the wave data from ending
void	rightTrim(int numberOfSample) Trim the wave data from ending
int	size() Data byte size of the wave excluding header size
java.lang.String	timestamp() Timestamp of the wave length
java.lang.String	toString()
void	trim(double leftTrimSecond, double rightTrimSecond) Trim the wave data
void	trim(int leftTrimNumberOfSample, int rightTrimNumberOfSample) Trim the wave data

Methods inherited from class java.lang.Object

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

Constructor Detail

Wave

public Wave()

Constructor

Wave

public Wave(java.lang.String filename)

Constructor

Parameters:

filename - Wave file

Wave

public Wave(java.io.InputStream inputStream)

Constructor

Parameters:

inputStream - Wave file input stream

Wave

public Wave(WaveHeader waveHeader,
            byte[] data)

Constructor

Parameters:

waveHeader -

data -

Method Detail

trim

public void trim(int leftTrimNumberOfSample,
                 int rightTrimNumberOfSample)

Trim the wave data

Parameters:

leftTrimNumberOfSample - Number of sample trimmed from beginning

rightTrimNumberOfSample - Number of sample trimmed from ending

leftTrim

public void leftTrim(int numberOfSample)

Trim the wave data from beginning

Parameters:

numberOfSample - numberOfSample trimmed from beginning

rightTrim

public void rightTrim(int numberOfSample)

Trim the wave data from ending

Parameters:

numberOfSample - numberOfSample trimmed from ending

trim

public void trim(double leftTrimSecond,
                 double rightTrimSecond)

Trim the wave data

Parameters:

leftTrimSecond - Seconds trimmed from beginning

rightTrimSecond - Seconds trimmed from ending

leftTrim

public void leftTrim(double second)

Trim the wave data from beginning

Parameters:

second - Seconds trimmed from beginning

rightTrim

public void rightTrim(double second)

Trim the wave data from ending

Parameters:

second - Seconds trimmed from ending

getWaveHeader

public WaveHeader getWaveHeader()

Get the wave header

Returns:

waveHeader

getSpectrogram

public Spectrogram getSpectrogram()

Get the wave spectrogram

Returns:

spectrogram

getSpectrogram

public Spectrogram getSpectrogram(int fftSampleSize,
                                  int overlapFactor)

Get the wave spectrogram

Parameters:

fftSampleSize - number of sample in fft, the value needed to be a number to power of 2

overlapFactor - 1/overlapFactor overlapping, e.g. 1/4=25% overlapping, 0 for no overlapping

Returns:

spectrogram

getBytes

public byte[] getBytes()

Get the wave data in bytes

Returns:

wave data

size

public int size()

Data byte size of the wave excluding header size

Returns:

byte size of the wave

length

public float length()

Length of the wave in second

Returns:

length in second

timestamp

public java.lang.String timestamp()

Timestamp of the wave length

Returns:

timestamp

getSampleAmplitudes

public short[] getSampleAmplitudes()

Get the amplitudes of the wave samples (depends on the header)

Returns:

amplitudes array (signed 16-bit)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getNormalizedAmplitudes

public double[] getNormalizedAmplitudes()

getFingerprint

public byte[] getFingerprint()

getFingerprintSimilarity

public FingerprintSimilarity getFingerprintSimilarity(Wave wave)