ptolemy.math
Class SignalProcessing.GaussianSampleGenerator

java.lang.Object
  ptolemy.math.SignalProcessing.GaussianSampleGenerator

All Implemented Interfaces:

DoubleUnaryOperation

Enclosing class:

SignalProcessing

public static class SignalProcessing.GaussianSampleGenerator
extends java.lang.Object
implements DoubleUnaryOperation

This class generates samples of a Gaussian function with the specified mean and standard deviation. The function computed is :

  h(t) = (1/(sqrt(2 * PI) * stdDev) *
         exp(-(t - mean)2 / (2 * stdDev2))
  

Field Summary

private double	_factor
private double	_mean
private double	_oneOverTwoVariance
private static double	ONE_OVER_SQRT_TWO_PI

Constructor Summary

SignalProcessing.GaussianSampleGenerator(double mean, double standardDeviation)
Construct a GaussianSampleGenerator.

Method Summary

double

operate(double time) Return a sample of the Gaussian function, sampled at the specified time.

Methods inherited from class java.lang.Object

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

Field Detail

_mean

private final double _mean

_oneOverTwoVariance

private final double _oneOverTwoVariance

_factor

private final double _factor

ONE_OVER_SQRT_TWO_PI

private static final double ONE_OVER_SQRT_TWO_PI

Constructor Detail

SignalProcessing.GaussianSampleGenerator

public SignalProcessing.GaussianSampleGenerator(double mean,
                                                double standardDeviation)

Construct a GaussianSampleGenerator.

Parameters:

standardDeviation - The standard deviation of the Gaussian function.

Method Detail

operate

public final double operate(double time)

Return a sample of the Gaussian function, sampled at the specified time.

Specified by:

operate in interface DoubleUnaryOperation

Parameters:

time - The operand.

Returns:

The results of the operation.