daisysp::Svf Class Reference

#include <svf.h>

Public Member Functions
void	Init (float sample_rate)
void	Process (float in)
void	SetFreq (float f)
void	SetRes (float r)
void	SetDrive (float d)
float	Low ()
float	High ()
float	Band ()
float	Notch ()
float	Peak ()

Detailed Description

Double Sampled, Stable State Variable Filter

Credit to Andrew Simper from musicdsp.org

This is his "State Variable Filter (Double Sampled, Stable)"

Additional thanks to Laurent de Soras for stability limit, and Stefan Diedrichsen for the correct notch output

Ported by: Stephen Hensley

Member Function Documentation

Band()

float daisysp::Svf::Band ( )

inline

bandpass output

Returns

band pass output of the filter

High()

float daisysp::Svf::High ( )

inline

highpass output

Returns

high pass output of the filter

Init()

void Svf::Init

(

float

sample_rate

)

Initializes the filter float sample_rate - sample rate of the audio engine being run, and the frequency that the Process function will be called.

Low()

float daisysp::Svf::Low ( )

inline

lowpass output

Returns

low pass output of the filter

Notch()

float daisysp::Svf::Notch ( )

inline

notchpass output

Returns

notch pass output of the filter

Peak()

float daisysp::Svf::Peak ( )

inline

peak output

Returns

peak output of the filter

Process()

void Svf::Process

(

float

in

)

Process the input signal, updating all of the outputs.

SetDrive()

void Svf::SetDrive

(

float

d

)

sets the drive of the filter affects the response of the resonance of the filter

SetFreq()

void Svf::SetFreq

(

float

f

)

sets the frequency of the cutoff frequency. f must be between 0.0 and sample_rate / 3

SetRes()

void Svf::SetRes

(

float

r

)

sets the resonance of the filter. Must be between 0.0 and 1.0 to ensure stability.

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

• Source/Filters/svf.h
• Source/Filters/svf.cpp