Filters

Class MovingAverageFilter

java.lang.Object

Filters.AbstractFilter

Filters.MovingAverageFilter

All Implemented Interfaces:

Filter

public class MovingAverageFilter
extends AbstractFilter

Moving average filter. Stores a local array of values input to the filter and subtracts off the oldest value as it adds the newest one. This makes it as fast as a decaying average filter.

Author:

Doug Gillespie

Constructor Summary

Constructors

Constructor and Description
MovingAverageFilter(int filterLen)

Method Summary

Methods

Modifier and Type	Method and Description
int	getFilterDelay() Gets the delay of the filter - rarely used, but can be important for some processing tasks.
void	prepareFilter() Calculates the poles and zeros for the filter and sets up any memory buffers required during real time operation.
double	runFilter(double data) Runs the filter on a single data value

Methods inherited from class Filters.AbstractFilter

runFilter, runFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

MovingAverageFilter

public MovingAverageFilter(int filterLen)

Method Detail

prepareFilter

public void prepareFilter()

Description copied from interface: Filter

Calculates the poles and zeros for the filter and sets up any memory buffers required during real time operation.

Specified by:

prepareFilter in interface Filter

Specified by:

prepareFilter in class AbstractFilter

runFilter

public double runFilter(double data)

Description copied from interface: Filter

Runs the filter on a single data value

Specified by:

runFilter in interface Filter

Specified by:

runFilter in class AbstractFilter

Returns:

New data value

getFilterDelay

public int getFilterDelay()

Description copied from interface: Filter

Gets the delay of the filter - rarely used, but can be important for some processing tasks. For an IIRF filter, this would be half the number of poles, for a moving average or median filter it would be half the filter length.

Returns:

filter delay in samples.