whistlesAndMoans
Class WhistleDelays

java.lang.Object
  whistlesAndMoans.WhistleDelays

public class WhistleDelays
extends java.lang.Object

Class for estimating whistle delays from a whistle shape.
to save processing, one of these should be created for each channel group so that multiple delay measures can be pre prepared and populated simultaneously - i.e. each bit of FFT data will need to go into one measure as it, but into the next as it's complex conjugate.
Doing everything at once should save data access times.

Author:

Doug Gillespie

Nested Class Summary

(package private) class

WhistleDelays.DelayMeasure

Field Summary

private int[]	channelList
private int	channelMap
private WhistleDelays.DelayMeasure[]	delayMeasures
private FastFFT	fft
private int	nChannels
(package private) int	nDelays
private FFTDataBlock	sourceData
private WhistleMoanControl	whistleMoanControl
private WhistleToneConnectProcess	whProcess

Constructor Summary

WhistleDelays(WhistleMoanControl whistleMoanControl, int channelMap)

Method Summary

double[]	getDelays(ConnectedRegion region) Gets the delays for a connected region.
void	prepareBearings()

Methods inherited from class java.lang.Object

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

Field Detail

whistleMoanControl

private WhistleMoanControl whistleMoanControl

whProcess

private WhistleToneConnectProcess whProcess

sourceData

private FFTDataBlock sourceData

channelMap

private int channelMap

nChannels

private int nChannels

channelList

private int[] channelList

nDelays

int nDelays

delayMeasures

private WhistleDelays.DelayMeasure[] delayMeasures

fft

private FastFFT fft

Constructor Detail

WhistleDelays

public WhistleDelays(WhistleMoanControl whistleMoanControl,
                     int channelMap)

Method Detail

prepareBearings

public void prepareBearings()

getDelays

public double[] getDelays(ConnectedRegion region)

Gets the delays for a connected region. nChan(nChan-1)/2 delays will be returned. Delays are channels 0-1, 0-2, 1-2, etc.

Parameters:

channelMap - channel bitmap

region - connected region

Returns:

array of delays from cross correlation in samples.