Low-pass filters an incoming stream of numbers. More...

#include <Filter.h>

Public Member Functions
	LowPassFilter (float const a)
	Construct the filter with given coefficient.
float	filter (float const x)
	Main processing function, passes given value to filter and returns the filter's output.
void	reset ()
	Resets the internal state of the filter. Use to start filtering a new stream.

Detailed Description

Low-pass filters an incoming stream of numbers.

Implements a 1st-order IIR low-pass filter. The coefficient can be used to specify how much to filter.

Definition at line 9 of file Filter.h.

Constructor & Destructor Documentation

LowPassFilter ( float const a )

Construct the filter with given coefficient.

Parameters:

a	filter coefficient (0.0 to 1.0), higher values result in more filtering.

Definition at line 18 of file Filter.h.

float filter ( float const x )

Main processing function, passes given value to filter and returns the filter's output.

Call repeatedly to filter an incoming stream of numbers.

Parameters:

x	one value to send to filter as input

Definition at line 24 of file Filter.h.

void reset ( )

Resets the internal state of the filter. Use to start filtering a new stream.

Definition at line 30 of file Filter.h.