marytts.util.data

Class NoiseDoubleDataSource

java.lang.Object

marytts.util.data.BaseDoubleDataSource

marytts.util.data.NoiseDoubleDataSource

All Implemented Interfaces:

DoubleDataSource

public class NoiseDoubleDataSource
extends BaseDoubleDataSource

Field Summary

Fields

Modifier and Type	Field and Description
protected double	amplitude
protected long	n

Fields inherited from class marytts.util.data.BaseDoubleDataSource

dataLength, inputSource

Fields inherited from interface marytts.util.data.DoubleDataSource

NOT_SPECIFIED

Constructor Summary

Constructors

Constructor and Description
NoiseDoubleDataSource(long n, double dB) Construct an double data source from which a given amount of white noise can be read.

Method Summary

Methods

Modifier and Type	Method and Description
int	available() The number of doubles that can currently be read from this double data source without blocking.
int	getData(double[] target, int targetPos, int length) Try to get length doubles from this DoubleDataSource, and copy them into target, starting from targetPos.
boolean	hasMoreData() Whether or not any more data can be read from this data source.

Methods inherited from class marytts.util.data.BaseDoubleDataSource

getAllData, getData, getData, getDataLength

Methods inherited from class java.lang.Object

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

Field Detail

n

protected long n

amplitude

protected double amplitude

Constructor Detail

NoiseDoubleDataSource

public NoiseDoubleDataSource(long n,
                     double dB)

Construct an double data source from which a given amount of white noise can be read.

Parameters:

n - the number of samles samples to be read

dB - the energy of the noise, in dB relative to max amplitude. This must be non-positive, and will typically be between -100 and -3.

Method Detail

hasMoreData

public boolean hasMoreData()

Description copied from class: BaseDoubleDataSource

Whether or not any more data can be read from this data source.

Specified by:

hasMoreData in interface DoubleDataSource

Overrides:

hasMoreData in class BaseDoubleDataSource

Returns:

true if another call to getData() will return data, false otherwise.

available

public int available()

The number of doubles that can currently be read from this double data source without blocking. This number can change over time.

Specified by:

available in interface DoubleDataSource

Overrides:

available in class BaseDoubleDataSource

Returns:

the number of doubles that can currently be read without blocking

getData

public int getData(double[] target,
          int targetPos,
          int length)

Description copied from class: BaseDoubleDataSource

Try to get length doubles from this DoubleDataSource, and copy them into target, starting from targetPos. This is the core method getting the data. Subclasses may want to override this method.

Specified by:

getData in interface DoubleDataSource

Overrides:

getData in class BaseDoubleDataSource

Parameters:

target - the double array to write into

targetPos - position in target where to start writing

length - the amount of data requested

Returns:

the amount of data actually delivered. If the returned value is less than length, only that many data items have been copied into target; further calls will return 0 and not copy anything.