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https://github.com/thestk/stk
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Version 4.0
This commit is contained in:
committed by
Stephen Sinclair
parent
3f126af4e5
commit
81475b04c5
163
src/BeeThree.cpp
163
src/BeeThree.cpp
@@ -1,81 +1,114 @@
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/******************************************/
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/* Hammond(OID) Organ Subclass */
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/* of Algorithm 8 (TX81Z) Subclass of */
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/* 4 Operator FM Synth */
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/* by Perry R. Cook, 1995-96 */
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/******************************************/
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/***************************************************/
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/*! \class BeeThree
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\brief STK Hammond-oid organ FM synthesis instrument.
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This class implements a simple 4 operator
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topology, also referred to as algorithm 8 of
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the TX81Z.
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\code
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Algorithm 8 is :
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1 --.
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2 -\|
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+-> Out
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3 -/|
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4 --
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\endcode
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Control Change Numbers:
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- Operator 4 (feedback) Gain = 2
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- Operator 3 Gain = 4
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- LFO Speed = 11
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- LFO Depth = 1
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- ADSR 2 & 4 Target = 128
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The basic Chowning/Stanford FM patent expired
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in 1995, but there exist follow-on patents,
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mostly assigned to Yamaha. If you are of the
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type who should worry about this (making
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money) worry away.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#include "BeeThree.h"
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#include <string.h>
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BeeThree :: BeeThree() : FM4Alg8()
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BeeThree :: BeeThree()
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: FM()
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{
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// Concatenate the STK RAWWAVE_PATH to the rawwave file
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char file1[128];
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char file2[128];
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char file3[128];
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char file4[128];
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strcpy(file1, RAWWAVE_PATH);
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strcpy(file2, RAWWAVE_PATH);
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strcpy(file3, RAWWAVE_PATH);
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strcpy(file4, RAWWAVE_PATH);
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this->loadWaves(strcat(file1,"rawwaves/sinewave.raw"),
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strcat(file2,"rawwaves/sinewave.raw"),
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strcat(file3,"rawwaves/sinewave.raw"),
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strcat(file4,"rawwaves/fwavblnk.raw"));
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int i;
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char files[4][128];
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this->setRatio(0,(MY_FLOAT) 0.999);
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this->setRatio(1,(MY_FLOAT) 1.997);
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this->setRatio(2,(MY_FLOAT) 3.006);
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this->setRatio(3,(MY_FLOAT) 6.009);
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gains[0] = __FM4Op_gains[95];
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gains[1] = __FM4Op_gains[95];
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gains[2] = __FM4Op_gains[99];
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gains[3] = __FM4Op_gains[95];
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adsr[0]->setAllTimes((MY_FLOAT) 0.005,(MY_FLOAT) 0.003,(MY_FLOAT) 1.0,(MY_FLOAT) 0.01);
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adsr[1]->setAllTimes((MY_FLOAT) 0.005,(MY_FLOAT) 0.003,(MY_FLOAT) 1.0,(MY_FLOAT) 0.01);
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adsr[2]->setAllTimes((MY_FLOAT) 0.005,(MY_FLOAT) 0.003,(MY_FLOAT) 1.0,(MY_FLOAT) 0.01);
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adsr[3]->setAllTimes((MY_FLOAT) 0.005,(MY_FLOAT) 0.001,(MY_FLOAT) 0.4,(MY_FLOAT) 0.03);
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twozero->setGain((MY_FLOAT) 0.1);
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}
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// Concatenate the STK RAWWAVE_PATH to the rawwave file
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for ( i=0; i<4; i++ )
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strcpy( files[i], RAWWAVE_PATH);
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strcat(files[0], "rawwaves/sinewave.raw");
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strcat(files[1], "rawwaves/sinewave.raw");
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strcat(files[2], "rawwaves/sinewave.raw");
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strcat(files[3], "rawwaves/fwavblnk.raw");
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for ( i=0; i<4; i++ )
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waves[i] = new WaveLoop( files[i], TRUE );
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this->setRatio(0, 0.999);
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this->setRatio(1, 1.997);
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this->setRatio(2, 3.006);
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this->setRatio(3, 6.009);
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gains[0] = __FM_gains[95];
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gains[1] = __FM_gains[95];
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gains[2] = __FM_gains[99];
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gains[3] = __FM_gains[95];
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adsr[0]->setAllTimes( 0.005, 0.003, 1.0, 0.01);
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adsr[1]->setAllTimes( 0.005, 0.003, 1.0, 0.01);
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adsr[2]->setAllTimes( 0.005, 0.003, 1.0, 0.01);
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adsr[3]->setAllTimes( 0.005, 0.001, 0.4, 0.03);
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twozero->setGain( 0.1 );
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}
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BeeThree :: ~BeeThree()
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{
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}
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void BeeThree :: setFreq(MY_FLOAT frequency)
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{
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baseFreq = frequency;
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waves[0]->setFreq(baseFreq * ratios[0]);
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waves[1]->setFreq(baseFreq * ratios[1]);
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waves[2]->setFreq(baseFreq * ratios[2]);
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waves[3]->setFreq(baseFreq * ratios[3]);
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void BeeThree :: noteOn(MY_FLOAT frequency, MY_FLOAT amplitude)
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{
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gains[0] = amplitude * __FM_gains[95];
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gains[1] = amplitude * __FM_gains[95];
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gains[2] = amplitude * __FM_gains[99];
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gains[3] = amplitude * __FM_gains[95];
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this->setFrequency(frequency);
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this->keyOn();
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#if defined(_STK_DEBUG_)
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cerr << "BeeThree: NoteOn frequency = " << frequency << ", amplitude = " << amplitude << endl;
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#endif
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}
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MY_FLOAT BeeThree :: tick()
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{
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MY_FLOAT temp;
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if (modDepth > 0.0) {
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temp = (MY_FLOAT) 1.0 + (modDepth * vibWave->tick() * (MY_FLOAT) 0.1);
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waves[0]->setFreq(baseFreq * ratios[0] * temp);
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waves[1]->setFreq(baseFreq * ratios[1] * temp);
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waves[2]->setFreq(baseFreq * ratios[2] * temp);
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waves[3]->setFreq(baseFreq * ratios[3] * temp);
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}
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lastOutput = FM4Alg8 :: tick();
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return lastOutput;
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}
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register MY_FLOAT temp;
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void BeeThree :: noteOn(MY_FLOAT freq, MY_FLOAT amp)
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{
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gains[0] = amp * __FM4Op_gains[95];
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gains[1] = amp * __FM4Op_gains[95];
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gains[2] = amp * __FM4Op_gains[99];
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gains[3] = amp * __FM4Op_gains[95];
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this->setFreq(freq);
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this->keyOn();
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#if defined(_debug_)
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printf("BeeThree : NoteOn: Freq=%lf Amp=%lf\n",freq,amp);
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#endif
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}
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if (modDepth > 0.0) {
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temp = 1.0 + (modDepth * vibrato->tick() * 0.1);
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waves[0]->setFrequency(baseFrequency * temp * ratios[0]);
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waves[1]->setFrequency(baseFrequency * temp * ratios[1]);
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waves[2]->setFrequency(baseFrequency * temp * ratios[2]);
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waves[3]->setFrequency(baseFrequency * temp * ratios[3]);
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}
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waves[3]->addPhaseOffset(twozero->lastOut());
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temp = control1 * 2.0 * gains[3] * adsr[3]->tick() * waves[3]->tick();
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twozero->tick(temp);
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temp += control2 * 2.0 * gains[2] * adsr[2]->tick() * waves[2]->tick();
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temp += gains[1] * adsr[1]->tick() * waves[1]->tick();
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temp += gains[0] * adsr[0]->tick() * waves[0]->tick();
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lastOutput = temp * 0.125;
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return lastOutput;
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}
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