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52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/******************************************/
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/* Algorithm 3 (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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/* Alg 3 is : 4--\ */
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/* 3-->2-- + -->1-->Out */
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/* */
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/* Controls: control1 = total mod index */
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/* control2 = crossfade of two */
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/* modulators */
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/* control3 = LFO speed */
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/* modWheel = LFO amount */
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/* */
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/******************************************/
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#include "FM4Alg3.h"
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FM4Alg3 :: FM4Alg3() : FM4Op()
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{
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/* We still don't make the waves here yet, because */
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/* we still don't know what they will be. */
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}
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MY_FLOAT FM4Alg3 :: tick()
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{
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MY_FLOAT temp;
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temp = vibWave->tick() * modDepth * 0.2;
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waves[0]->setFreq(baseFreq * (1.0 + temp) * ratios[0]);
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waves[1]->setFreq(baseFreq * (1.0 + temp) * ratios[1]);
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waves[2]->setFreq(baseFreq * (1.0 + temp) * ratios[2]);
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waves[3]->setFreq(baseFreq * (1.0 + temp) * ratios[3]);
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temp = gains[2] * adsr[2]->tick() * waves[2]->tick();
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waves[1]->addPhaseOffset(temp);
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waves[3]->addPhaseOffset(twozero->lastOut());
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temp = (1.0 - (control2 * 0.5)) * gains[3] * adsr[3]->tick() * waves[3]->tick();
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twozero->tick(temp);
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temp += control2 * 0.5 * gains[1] * adsr[1]->tick() * waves[1]->tick();
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temp = temp * control1;
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waves[0]->addPhaseOffset(temp);
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temp = gains[0] * adsr[0]->tick() * waves[0]->tick();
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lastOutput = temp * 0.5;
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return lastOutput;
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}
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