ref: bc99f48aca15efd07cb81853172b95e83076314f
dir: /LEAF/Inc/leaf-physical.h/
/*
==============================================================================
leaf-physical.h
Created: 30 Nov 2018 10:41:55am
Author: airship
==============================================================================
*/
#ifndef LEAF_PHYSICAL_H_INCLUDED
#define LEAF_PHYSICAL_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
//==============================================================================
#include "leaf-global.h"
#include "leaf-math.h"
#include "leaf-delay.h"
#include "leaf-filters.h"
#include "leaf-oscillators.h"
#include "leaf-envelopes.h"
#include "leaf-dynamics.h"
//==============================================================================
/* Karplus Strong model */
typedef struct _tPluck
{
tAllpassDelay delayLine; // Allpass or Linear?? big difference...
tOneZero loopFilter;
tOnePole pickFilter;
tNoise noise;
float lastOut;
float loopGain;
float lastFreq;
float sr;
} _tPluck;
typedef _tPluck* tPluck;
void tPluck_init (tPluck* const, float lowestFrequency); //float delayBuff[DELAY_LENGTH]);
void tPluck_free (tPluck* const);
float tPluck_tick (tPluck* const);
// Pluck the string.
void tPluck_pluck (tPluck* const, float amplitude);
// Start a note with the given frequency and amplitude.;
void tPluck_noteOn (tPluck* const, float frequency, float amplitude );
// Stop a note with the given amplitude (speed of decay).
void tPluck_noteOff (tPluck* const, float amplitude );
// Set instrument parameters for a particular frequency.
void tPluck_setFrequency (tPluck* const, float frequency );
// Perform the control change specified by \e number and \e value (0.0 - 128.0).
void tPluck_controlChange (tPluck* const, int number, float value);
// tPluck Utilities.
float tPluck_getLastOut (tPluck* const);
//==============================================================================
typedef enum SKControlType
{
SKPickPosition = 0,
SKStringDamping,
SKDetune,
SKControlTypeNil
} SKControlType;
/* Stif Karplus Strong model */
typedef struct _tKarplusStrong
{
tAllpassDelay delayLine;
tLinearDelay combDelay;
tOneZero filter;
tNoise noise;
tBiQuad biquad[4];
uint32_t length;
float loopGain;
float baseLoopGain;
float lastFrequency;
float lastLength;
float stretching;
float pluckAmplitude;
float pickupPosition;
float lastOut;
} _tKarplusStrong;
typedef _tKarplusStrong* tKarplusStrong;
void tKarplusStrong_init (tKarplusStrong* const, float lowestFrequency); // float delayBuff[2][DELAY_LENGTH]);
void tKarplusStrong_free (tKarplusStrong* const);
float tKarplusStrong_tick (tKarplusStrong* const);
// Pluck the string.
void tKarplusStrong_pluck (tKarplusStrong* const, float amplitude);
// Start a note with the given frequency and amplitude.;
void tKarplusStrong_noteOn (tKarplusStrong* const, float frequency, float amplitude );
// Stop a note with the given amplitude (speed of decay).
void tKarplusStrong_noteOff (tKarplusStrong* const, float amplitude );
// Set instrument parameters for a particular frequency.
void tKarplusStrong_setFrequency (tKarplusStrong* const, float frequency );
// Perform the control change specified by \e number and \e value (0.0 - 128.0).
// Use SKPickPosition, SKStringDamping, or SKDetune for type.
void tKarplusStrong_controlChange (tKarplusStrong* const, SKControlType type, float value);
// Set the stretch "factor" of the string (0.0 - 1.0).
void tKarplusStrong_setStretch (tKarplusStrong* const, float stretch );
// Set the pluck or "excitation" position along the string (0.0 - 1.0).
void tKarplusStrong_setPickupPosition (tKarplusStrong* const, float position );
// Set the base loop gain.
void tKarplusStrong_setBaseLoopGain (tKarplusStrong* const, float aGain );
// tKarplusStrong utilities.
float tKarplusStrong_getLastOut (tKarplusStrong* const);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* Simple Living String */
typedef struct _tSimpleLivingString {
float freq, waveLengthInSamples; // the frequency of the string, determining delay length
float dampFreq; // frequency for the bridge LP filter, in Hz
float decay; // amplitude damping factor for the string (only active in mode 0)
float levMode;
float curr;
tLinearDelay delayLine;
tOnePole bridgeFilter;
tHighpass DCblocker;
tFeedbackLeveler fbLev;
tExpSmooth wlSmooth;
} _tSimpleLivingString;
typedef _tSimpleLivingString* tSimpleLivingString;
void tSimpleLivingString_init (tSimpleLivingString* const, float freq, float dampFreq, float decay, float targetLev, float levSmoothFactor, float levStrength, int levMode);
void tSimpleLivingString_free (tSimpleLivingString* const);
float tSimpleLivingString_tick (tSimpleLivingString* const, float input);
float tSimpleLivingString_sample (tSimpleLivingString* const);
void tSimpleLivingString_setFreq (tSimpleLivingString* const, float freq);
void tSimpleLivingString_setWaveLength (tSimpleLivingString* const, float waveLength); // in samples
void tSimpleLivingString_setDampFreq (tSimpleLivingString* const, float dampFreq);
void tSimpleLivingString_setDecay (tSimpleLivingString* const, float decay); // should be near 1.0
void tSimpleLivingString_setTargetLev (tSimpleLivingString* const, float targetLev);
void tSimpleLivingString_setLevSmoothFactor (tSimpleLivingString* const, float levSmoothFactor);
void tSimpleLivingString_setLevStrength (tSimpleLivingString* const, float levStrength);
void tSimpleLivingString_setLevMode (tSimpleLivingString* const, int levMode);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* Living String */
typedef struct _tLivingString {
float freq, waveLengthInSamples; // the frequency of the whole string, determining delay length
float pickPos; // the pick position, dividing the string in two, in ratio
float prepIndex; // the amount of pressure on the pickpoint of the string (near 0=soft obj, near 1=hard obj)
float dampFreq; // frequency for the bridge LP filter, in Hz
float decay; // amplitude damping factor for the string (only active in mode 0)
float levMode;
float curr;
tLinearDelay delLF,delUF,delUB,delLB; // delay for lower/upper/forward/backward part of the waveguide model
tOnePole bridgeFilter, nutFilter, prepFilterU, prepFilterL;
tHighpass DCblockerL, DCblockerU;
tFeedbackLeveler fbLevU, fbLevL;
tExpSmooth wlSmooth, ppSmooth;
} _tLivingString;
typedef _tLivingString* tLivingString;
void tLivingString_init (tLivingString* const, float freq, float pickPos, float prepIndex, float dampFreq, float decay,
float targetLev, float levSmoothFactor, float levStrength, int levMode);
void tLivingString_free (tLivingString* const);
float tLivingString_tick (tLivingString* const, float input);
float tLivingString_sample (tLivingString* const);
void tLivingString_setFreq (tLivingString* const, float freq);
void tLivingString_setWaveLength (tLivingString* const, float waveLength); // in samples
void tLivingString_setPickPos (tLivingString* const, float pickPos);
void tLivingString_setPrepIndex (tLivingString* const, float prepIndex);
void tLivingString_setDampFreq (tLivingString* const, float dampFreq);
void tLivingString_setDecay (tLivingString* const, float decay); // should be near 1.0
void tLivingString_setTargetLev (tLivingString* const, float targetLev);
void tLivingString_setLevSmoothFactor (tLivingString* const, float levSmoothFactor);
void tLivingString_setLevStrength (tLivingString* const, float levStrength);
void tLivingString_setLevMode (tLivingString* const, int levMode);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
//Reed Table - borrowed from STK
typedef struct _tReedTable {
float offset, slope;
} _tReedTable;
typedef _tReedTable* tReedTable;
void tReedTable_init (tReedTable* const, float offset, float slope);
void tReedTable_free (tReedTable* const);
float tReedTable_tick (tReedTable* const, float input);
float tReedTable_tanh_tick (tReedTable* const p, float input); //tanh softclip version of reed table - replacing the hard clip in original stk code
void tReedTable_setOffset (tReedTable* const, float offset);
void tReedTable_setSlope (tReedTable* const, float slope);
//==============================================================================
#ifdef __cplusplus
}
#endif
#endif // LEAF_PHYSICAL_H_INCLUDED
//==============================================================================