marytts.util.data.audio

Class AudioConverterUtils

java.lang.Object

marytts.util.data.audio.AudioConverterUtils

public class AudioConverterUtils
extends Object

Audio Convertion Utilities

Author:

Sathish Chandra Pammi

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AudioConverterUtils.HighPassFilter A high-pass filter with flexible cutoff frequency and transition bandwidth.
static class	AudioConverterUtils.SequenceAudioProcessor
static class	AudioConverterUtils.Stereo2Mono

Constructor Summary

Constructors

Constructor and Description
AudioConverterUtils()

Method Summary

Modifier and Type	Method and Description
static AudioInputStream	convertBit24ToBit16(AudioInputStream ais) 24-Bit Audio to 16-bit Audio converter
static AudioInputStream	convertBit24ToBit16(AudioInputStream ais, int shiftBits) 24-Bit Audio to 16-bit Audio converter
static AudioInputStream	downSampling(AudioInputStream ais, int targetSamplingRate) DownSampling given Audio Input Stream
static int[]	getSamples(AudioInputStream ais) Get samples in Integer Format (un-normalized) from AudioInputStream
static void	removeEndpoints(String inputFile, String outputFile, int energyBufferLength, double speechStartLikelihood, double speechEndLikelihood, double shiftFromMinimumEnergyCenter, int numClusters, double minimumStartSilenceInSeconds, double minimumEndSilenceInSeconds) Removes endpoints from given file.

Methods inherited from class java.lang.Object

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

Constructor Detail

AudioConverterUtils

public AudioConverterUtils()

Method Detail

convertBit24ToBit16

public static AudioInputStream convertBit24ToBit16(AudioInputStream ais)
                                            throws Exception

24-Bit Audio to 16-bit Audio converter

Parameters:

ais - ais

Returns:

AudioInputStream audio input stream

Throws:

Exception - exception

convertBit24ToBit16

public static AudioInputStream convertBit24ToBit16(AudioInputStream ais,
                                                   int shiftBits)
                                            throws Exception

24-Bit Audio to 16-bit Audio converter

Parameters:

ais - ais

shiftBits - shift bits

Returns:

AudioInputStream

Throws:

Exception - exception

getSamples

public static int[] getSamples(AudioInputStream ais)
                        throws Exception

Get samples in Integer Format (un-normalized) from AudioInputStream

Parameters:

ais - ais

Returns:

samples

Throws:

Exception - exception

downSampling

public static AudioInputStream downSampling(AudioInputStream ais,
                                            int targetSamplingRate)
                                     throws Exception

DownSampling given Audio Input Stream

Parameters:

ais - ais

targetSamplingRate - target sampling rate

Returns:

oais

Throws:

Exception - exception

removeEndpoints

public static void removeEndpoints(String inputFile,
                                   String outputFile,
                                   int energyBufferLength,
                                   double speechStartLikelihood,
                                   double speechEndLikelihood,
                                   double shiftFromMinimumEnergyCenter,
                                   int numClusters,
                                   double minimumStartSilenceInSeconds,
                                   double minimumEndSilenceInSeconds)
                            throws IOException,
                                   UnsupportedAudioFileException

Removes endpoints from given file.

Parameters:

inputFile - input file

outputFile - output file

energyBufferLength - energyBufferLength

speechStartLikelihood - speechStartLikelihood

speechEndLikelihood - speechEndLikelihood

shiftFromMinimumEnergyCenter - shiftFromMinimumEnergyCenter

numClusters - numClusters

minimumStartSilenceInSeconds - minimumStartSilenceInSeconds

minimumEndSilenceInSeconds - minimumEndSilenceInSeconds

Throws:

IOException - IOException

UnsupportedAudioFileException - UnsupportedAudioFileException