reSIDfp::Filter8580 Class Reference

#include <Filter8580.h>

Inheritance diagram for reSIDfp::Filter8580:

List of all members.

Public Member Functions
int	clock (int voice1, int voice2, int voice3)
void	updatedCenterFrequency ()
void	updatedResonance ()
void	input (int input)
void	updatedMixing ()
void	setFilterCurve (double curvePosition)

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Detailed Description

Filter for 8580 chip based on simple linear approximation of the FC control.

This is like the original reSID filter except the phase of BP output has been inverted. I saw samplings on the internet that indicated it would genuinely happen like this.

Author:

Ken Händel

Dag Lem

Antti Lankila

Leandro Nini

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Member Function Documentation

RESID_INLINE int reSIDfp::Filter8580::clock	(	int	v1,
		int	v2,
		int	v3
	)		[virtual]

SID clocking - 1 cycle

Parameters:

v1	voice 1 in
v2	voice 2 in
v3	voice 3 in

Returns:

filtered output

Implements reSIDfp::Filter.

void reSIDfp::Filter8580::updatedCenterFrequency

(

)

[inline, virtual]

Set filter cutoff frequency.

Implements reSIDfp::Filter.

void reSIDfp::Filter8580::updatedMixing

(

)

[inline, virtual]

Mixing configuration modified (offsets change)

Implements reSIDfp::Filter.

void reSIDfp::Filter8580::updatedResonance

(

)

[inline, virtual]

Set filter resonance.

Implements reSIDfp::Filter.

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The documentation for this class was generated from the following file:

• Filter8580.h