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No commits in common. "36c27f14d8fd07aed9541c1eeb5112edefc282e5" and "9d642475989cb42a586fc336545d2975df67b40b" have entirely different histories.
36c27f14d8
...
9d64247598
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@ -63,7 +63,7 @@
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pSustain,
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pRelease,
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pChorusMode,
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pChorus,
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parameterCount
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};
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31857
plugin/artwork.cpp
31857
plugin/artwork.cpp
File diff suppressed because it is too large
Load Diff
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@ -110,10 +110,6 @@ void Assigner::noteOn(uint8_t note) {
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return;
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}
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if ((noteTbl[voiceTbl[0]] & 0x80)) {
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m->lfoRampOn();
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}
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// loop around the voices
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for (i = NUM_VOICES - 1; i >= 0; i--) {
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v = voiceTbl[i];
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@ -141,6 +137,6 @@ void Assigner::noteOn(uint8_t note) {
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// printf("at end, l=%d e=%d\n", l,e);
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noteTbl[v] = note;
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d_debug("send voice on %3d to voice %d", note, i);
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d_debug("send voice on %3d to voice %d", note, v);
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voice[v].on(note);
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}
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@ -27,7 +27,6 @@ class Assigner {
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Assigner();
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void handleMidi(MidiEvent* ev);
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Voice* voice;
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Module *m;
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private:
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void noteOn(uint8_t note); // incoming note on (or off, if velocity = 0)
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@ -147,7 +147,6 @@ void Chorus::setChorus(uint8_t mode) {
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// switch chorus mode
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switch (mode) {
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case 0x60:
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case 0x20:
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gain = 0;
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break;
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case 0x40:
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@ -40,29 +40,9 @@ Module::~Module() {
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delete subBuf;
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delete pwmBuf;
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}
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void Module::lfoRampOn() {
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lfoDelayState = 1;
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lfoDelayTimer = 0;
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lfoDelay = 0;
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}
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void Module::run(Voice* voices, uint32_t blockSize) {
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// run updates for module board
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if (lfoDelayState == 1) {
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lfoDelayTimer += lfoDelayTable[patchRam.lfoDelay >> 4];
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if (lfoDelayTimer & 0xc000) lfoDelayState = 2;
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}
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if ((lfoDelayState == 2)) {
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lfoDelay += attackTable[patchRam.lfoDelay];
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}
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if (lfoDelay & 0xc000) {
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lfoDelayState = 0;
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lfoDelay = 0x3fff;
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}
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// FIXME break these out to the patch setter
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a = attackTable[patchRam.env_a]; // attack time coeff looked up in table
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d = decayTable[patchRam.env_d]; // decay time coeff looked up in table
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@ -74,7 +54,7 @@ void Module::run(Voice* voices, uint32_t blockSize) {
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sub = patchRam.sub / 127.0f;
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lfoPhase += lfoRateTable[patchRam.lfoRate];
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res = patchRam.vcfReso / 127.0;
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res = patchRam.vcfReso / 127.0 * 5;
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noise = patchRam.noise / 127.0;
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// FIXME the exp in these is expensive, don't call it all the time
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@ -90,10 +70,8 @@ void Module::run(Voice* voices, uint32_t blockSize) {
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pw = 0.5 - ((0x2000 + lfo) * patchRam.pwmLfo) / (32768.0f * 128);
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pw = (patchRam.switch2 & 0x01) ? 0.5 - (patchRam.pwmLfo / 256.0f) : pw;
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lfo = (lfo * lfoDelay) >> 14;
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float master = powf(2, (patchRam.vca / 31.75 - 4.0f));
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float sub = patchRam.sub / 127.0f;
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float sub = patchRam.sub/ 127.0f;
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for (uint32_t i = 0; i < blockSize; i++) {
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vcaRC = (master - vcaRC) * subTC + vcaRC;
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@ -104,13 +82,14 @@ void Module::run(Voice* voices, uint32_t blockSize) {
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pwmBuf[i] = pwmRC;
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subBuf[i] = subRC;
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if (bufPtr < bufferSize) bufPtr++;
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}
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int16_t vcf = (patchRam.vcfEnv << 7) * ((patchRam.switch2 & 0x02) ? -1 : 1);
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int16_t pitchBase = 0x1818;
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pitchBase += (lfo * lfoDepthTable[patchRam.vcoLfo]) >> 11;
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pitchBase += (lfo * lfoDepthTable[patchRam.vcoLfo]) >> 9;
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for (uint32_t i = 0; i < NUM_VOICES; i++) {
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// maybe move all this into voice.cpp FIXME
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@ -142,13 +121,11 @@ void Module::run(Voice* voices, uint32_t blockSize) {
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px *= (patchRam.switch1 & 0x07);
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v->omega = px / (sampleRate * 8.0f); // fixme use proper scaler
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v->omega = px / (sampleRate * 4.0f); // fixme use proper scaler
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// per voice we need to calculate the key follow amount and envelope amount
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v->vcfCut = (patchRam.vcfFreq << 7) + ((vcf * v->env) >> 14);
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v->vcfCut += (lfo * patchRam.vcfLfo) >> 9;
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v->vcfCut += (int)((v->note - 36) * (patchRam.vcfKey << 1) * 0.375);
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v->vcfCut += (int)(v->note * (patchRam.vcfKey << 1) * 0.375);
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if (v->vcfCut > 0x3fff) v->vcfCut = 0x3fff;
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if (v->vcfCut < 0) v->vcfCut = 0;
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@ -33,8 +33,6 @@ class Module {
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Module();
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~Module();
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void lfoRampOn();
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void run(Voice* voices, uint32_t blockLeft);
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float res = 0;
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@ -48,50 +46,27 @@ class Module {
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float saw = 0, square = 0, sub = 0, noise = 0;
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#if 0
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struct {
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uint8_t lfoRate = 0x58;
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uint8_t lfoRate = 0x18;
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uint8_t lfoDelay = 0x00;
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uint8_t vcoLfo = 0x00;
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uint8_t pwmLfo = 0x3b;
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uint8_t pwmLfo = 0x60;
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uint8_t noise = 0x00;
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uint8_t vcfFreq = 0x25; // 1c; // 0x3f80
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uint8_t vcfReso = 0x6a;
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uint8_t vcfEnv = 0x25; // 4e;
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uint8_t vcfLfo = 0x00;
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uint8_t vcfKey = 0x00; // 47;
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uint8_t vca = 0x35;
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uint8_t vcfFreq = 0x30; // 1c; // 0x3f80
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uint8_t vcfReso = 0x00;
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uint8_t vcfEnv = 0x40; // 4e;
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uint8_t vcfLfo = 0;
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uint8_t vcfKey = 0x7f; // 47;
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uint8_t vca = 0x28;
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uint8_t env_a = 0x00;
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uint8_t env_d = 0x3c;
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uint8_t env_s = 0x00; // 0x3f80
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uint8_t env_r = 0x3c;
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uint8_t sub = 0x7f;
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uint8_t switch1 = 0x4a;
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uint8_t env_d = 0x39;
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uint8_t env_s = 0x30; // 0x3f80
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uint8_t env_r = 0x30;
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uint8_t sub = 0x40;
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uint8_t switch1 = 0x59;
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uint8_t switch2 = 0x18;
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} patchRam;
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#else
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struct {
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uint8_t lfoRate = 0x40;
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uint8_t lfoDelay = 0x00;
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uint8_t vcoLfo = 0x00;
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uint8_t pwmLfo = 0x00;
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uint8_t noise = 0x01;
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uint8_t vcfFreq = 0x31;
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uint8_t vcfReso = 0x7f;
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uint8_t vcfEnv = 0x00;
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uint8_t vcfLfo = 0x00;
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uint8_t vcfKey = 0x7f;
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uint8_t vca = 0x40;
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uint8_t env_a = 0x00;
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uint8_t env_d = 0x00;
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uint8_t env_s = 0x00; // 0x3f80
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uint8_t env_r = 0x00;
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uint8_t sub = 0x00;
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uint8_t switch1 = 0x22;
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uint8_t switch2 = 0x1d;
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} patchRam;
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#endif
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Chorus* chorus;
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float vcaTC;
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@ -106,9 +81,7 @@ class Module {
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float pwmTC = 0, subTC = 0, mVcaTC = 0;
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float pwmRC = 0, subRC = 0, vcaRC = 0;
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uint16_t lfoDelay = 0;
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uint8_t lfoDelayState = 0;
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uint16_t lfoDelayTimer = 0;
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// controls
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};
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class Voice {
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@ -135,8 +108,7 @@ class Voice {
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uint8_t note = 0;
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// filter
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float y0 = 0, y1 = 0, y2 = 0, y3 = 0;
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double s[4] = {0, 0, 0, 0};
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float b1 = 0, b2 = 0, b3 = 0, b4 = 0;
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};
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#endif
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@ -23,7 +23,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pLFORate:
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parameter.hints = kParameterIsAutomatable;
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parameter.name = "LFO Rate";
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parameter.symbol = "pfau_lforate";
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parameter.symbol = "ch_lforate";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 127.0f;
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parameter.ranges.def = 48.0f;
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@ -33,7 +33,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pLFODelay:
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parameter.hints = kParameterIsAutomatable;
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parameter.name = "LFO Delay";
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parameter.symbol = "pfau_lfodelay";
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parameter.symbol = "ch_lfodelay";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 127.0f;
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parameter.ranges.def = 0.0f;
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@ -43,7 +43,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pVCORange:
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parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
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parameter.name = "Range";
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parameter.symbol = "pfau_vcorange";
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parameter.symbol = "ch_vcorange";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 2.0f;
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parameter.ranges.def = 1.0f;
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@ -66,7 +66,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pLFODepth:
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parameter.hints = kParameterIsAutomatable;
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parameter.name = "LFO";
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parameter.symbol = "pfau_lfo";
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parameter.symbol = "ch_lfo";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 127.0f;
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parameter.ranges.def = 10.0f;
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@ -76,7 +76,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pPWMDepth:
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parameter.hints = kParameterIsAutomatable;
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parameter.name = "PWM";
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parameter.symbol = "pfau_pwm";
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parameter.symbol = "ch_pwm";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 127.0f;
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parameter.ranges.def = 48.0f;
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@ -86,7 +86,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pPWMMode:
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parameter.hints = kParameterIsAutomatable | kParameterIsBoolean;
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parameter.name = "PWM Mode";
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parameter.symbol = "pfau_pwmmode";
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parameter.symbol = "ch_pwmmode";
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parameter.ranges.min = 0.0f;
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parameter.ranges.max = 1.0f;
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parameter.ranges.def = 1.0f;
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@ -107,7 +107,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pSaw:
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parameter.hints = kParameterIsAutomatable | kParameterIsBoolean;
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parameter.name = "Saw";
|
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parameter.symbol = "pfau_saw";
|
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parameter.symbol = "ch_saw";
|
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parameter.ranges.min = 0.0f;
|
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parameter.ranges.max = 1.0f;
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parameter.ranges.def = 1.0f;
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@ -117,7 +117,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pSqr:
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parameter.hints = kParameterIsAutomatable | kParameterIsBoolean;
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parameter.name = "Square";
|
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parameter.symbol = "pfau_sqr";
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parameter.symbol = "ch_sqr";
|
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parameter.ranges.min = 0.0f;
|
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parameter.ranges.max = 1.0f;
|
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parameter.ranges.def = 1.0f;
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@ -127,7 +127,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pSubLevel:
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parameter.hints = kParameterIsAutomatable;
|
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parameter.name = "Sub Osc";
|
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parameter.symbol = "pfau_sub";
|
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parameter.symbol = "ch_sub";
|
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parameter.ranges.min = 0.0f;
|
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parameter.ranges.max = 127.0f;
|
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parameter.ranges.def = 0.0f;
|
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|
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@ -137,7 +137,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
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case pNoiseLevel:
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parameter.hints = kParameterIsAutomatable;
|
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parameter.name = "Noise";
|
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parameter.symbol = "pfau_noise";
|
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parameter.symbol = "ch_noise";
|
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parameter.ranges.min = 0.0f;
|
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parameter.ranges.max = 127.0f;
|
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parameter.ranges.def = 0.0f;
|
||||
|
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@ -147,7 +147,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
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case pHPF:
|
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parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
|
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parameter.name = "HPF";
|
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parameter.symbol = "pfau_hpf";
|
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parameter.symbol = "ch_hpf";
|
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parameter.ranges.min = 0.0f;
|
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parameter.ranges.max = 3.9f;
|
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parameter.ranges.def = 0.0f;
|
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|
|
@ -157,7 +157,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
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case pCutoff:
|
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parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Freq";
|
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parameter.symbol = "pfau_freq";
|
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parameter.symbol = "ch_freq";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 60.0f;
|
||||
|
|
@ -166,7 +166,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pRes:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Res";
|
||||
parameter.symbol = "pfau_reso";
|
||||
parameter.symbol = "ch_reso";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
|
|
@ -175,7 +175,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pVCFPol:
|
||||
parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
|
||||
parameter.name = "Polarity";
|
||||
parameter.symbol = "pfau_vcfmode";
|
||||
parameter.symbol = "ch_vcfmode";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 1.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
|
|
@ -195,7 +195,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pEnv:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Env";
|
||||
parameter.symbol = "pfau_vcfenv";
|
||||
parameter.symbol = "ch_vcfenv";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 46.0f;
|
||||
|
|
@ -204,7 +204,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pLfo:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "LFO";
|
||||
parameter.symbol = "pfau_vcflfo";
|
||||
parameter.symbol = "ch_vcflfo";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
|
|
@ -213,7 +213,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pKyb:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Kybd";
|
||||
parameter.symbol = "pfau_vcfkey";
|
||||
parameter.symbol = "ch_vcfkey";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 71.0f;
|
||||
|
|
@ -223,7 +223,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pAttack:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Attack";
|
||||
parameter.symbol = "pfau_attack";
|
||||
parameter.symbol = "ch_attack";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 27.0f;
|
||||
|
|
@ -233,7 +233,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pDecay:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Decay";
|
||||
parameter.symbol = "pfau_decay";
|
||||
parameter.symbol = "ch_decay";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 57.0f;
|
||||
|
|
@ -243,7 +243,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pSustain:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Sustain";
|
||||
parameter.symbol = "pfau_sustain";
|
||||
parameter.symbol = "ch_sustain";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 57.0f;
|
||||
|
|
@ -253,7 +253,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pRelease:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "Release";
|
||||
parameter.symbol = "pfau_release";
|
||||
parameter.symbol = "ch_release";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 48.0f;
|
||||
|
|
@ -263,7 +263,7 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pEnvGate:
|
||||
parameter.hints = kParameterIsAutomatable | kParameterIsInteger; // | kParameterIsBoolean;
|
||||
parameter.name = "Env-Gate";
|
||||
parameter.symbol = "pfau_envgate";
|
||||
parameter.symbol = "ch_envgate";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 1.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
|
|
@ -283,39 +283,17 @@ void Peacock::initParameter(uint32_t index, Parameter& parameter) {
|
|||
case pVCALevel:
|
||||
parameter.hints = kParameterIsAutomatable;
|
||||
parameter.name = "VCA Level";
|
||||
parameter.symbol = "pfau_vcalevel";
|
||||
parameter.symbol = "ch_vcalevel";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 40.0f;
|
||||
parameter.midiCC = 26;
|
||||
break;
|
||||
|
||||
case pChorusMode:
|
||||
parameter.hints = kParameterIsAutomatable | kParameterIsInteger;
|
||||
parameter.name = "Chorus";
|
||||
parameter.symbol = "pfau_chorus";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 2.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
parameter.midiCC = 93;
|
||||
parameter.enumValues.count = 3;
|
||||
parameter.enumValues.restrictedMode = true;
|
||||
{
|
||||
ParameterEnumerationValue* const enumValues = new ParameterEnumerationValue[3];
|
||||
enumValues[0].value = 0.0f;
|
||||
enumValues[0].label = "Off";
|
||||
enumValues[1].value = 1.0f;
|
||||
enumValues[1].label = "Slow";
|
||||
enumValues[2].value = 2.0f;
|
||||
enumValues[2].label = "Fast";
|
||||
parameter.enumValues.values = enumValues;
|
||||
}
|
||||
|
||||
/*
|
||||
case pModWheel:
|
||||
parameter.hints = kParameterIsAutomatable | kParameterIsHidden;
|
||||
parameter.name = "Mod wheel";
|
||||
parameter.symbol = "pfau_modwheel";
|
||||
parameter.symbol = "ch_modwheel";
|
||||
parameter.ranges.min = 0.0f;
|
||||
parameter.ranges.max = 127.0f;
|
||||
parameter.ranges.def = 0.0f;
|
||||
|
|
@ -401,7 +379,7 @@ void Peacock::setParameterValue(uint32_t index, float value) {
|
|||
m->patchRam.switch1 |= (value >= 0.5) << 4;
|
||||
break;
|
||||
|
||||
case pChorusMode:
|
||||
case pChorus:
|
||||
m->patchRam.switch1 &= 0x9f;
|
||||
|
||||
switch ((int)value) {
|
||||
|
|
@ -528,7 +506,7 @@ float Peacock::getParameterValue(uint32_t index) const {
|
|||
case pVCALevel:
|
||||
return m->patchRam.vca;
|
||||
break;
|
||||
case pChorusMode:
|
||||
case pChorus:
|
||||
|
||||
switch (m->patchRam.switch1 & 0x60) {
|
||||
case 0x60:
|
||||
|
|
@ -540,6 +518,8 @@ float Peacock::getParameterValue(uint32_t index) const {
|
|||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -32,7 +32,6 @@ Peacock::Peacock() : Plugin(parameterCount, 0, 0) {
|
|||
m = new Module();
|
||||
ic1 = new Assigner;
|
||||
ic1->voice = voice;
|
||||
ic1->m = m;
|
||||
m->chorus = chorus;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -268,7 +268,7 @@ void DistrhoUIPeacock::parameterChanged(uint32_t index, float value) {
|
|||
sw1 |= (value > 0.5) << 4;
|
||||
break;
|
||||
|
||||
case pChorusMode:
|
||||
case pChorus:
|
||||
sw1 &= 0x9f;
|
||||
// 60, 40, 00
|
||||
switch ((int)value) {
|
||||
|
|
@ -325,15 +325,15 @@ void DistrhoUIPeacock::imageButtonClicked(ImageButton* imgBtn, int) {
|
|||
break;
|
||||
case btnCh0:
|
||||
sw1 = (sw1 & 0x9f) | 0x20;
|
||||
setParameterValue(pChorusMode, 0);
|
||||
setParameterValue(pChorus, 0);
|
||||
break;
|
||||
case btnCh1:
|
||||
sw1 = (sw1 & 0x9f) | 0x40;
|
||||
setParameterValue(pChorusMode, 1);
|
||||
setParameterValue(pChorus, 1);
|
||||
break;
|
||||
case btnCh2:
|
||||
sw1 = (sw1 & 0x9f);
|
||||
setParameterValue(pChorusMode, 2);
|
||||
setParameterValue(pChorus, 2);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
|
|
|||
123
plugin/voice.cpp
123
plugin/voice.cpp
|
|
@ -40,9 +40,11 @@ Voice::Voice() {
|
|||
}
|
||||
|
||||
void Voice::on(uint8_t midiNote) {
|
||||
while (midiNote < 24) midiNote += 12;
|
||||
while (midiNote > 108) midiNote -=12;
|
||||
// omega = 261.63 * powf(2, (note - 60) / 12.0f) / 48000.0f;
|
||||
if (midiNote > 24)
|
||||
note = midiNote - 24;
|
||||
else
|
||||
note = 24;
|
||||
envPhase = 1;
|
||||
}
|
||||
|
||||
|
|
@ -50,46 +52,16 @@ void Voice::off() {
|
|||
envPhase = 0;
|
||||
}
|
||||
|
||||
|
||||
// tanh(x)/x approximation, flatline at very high inputs
|
||||
// so might not be safe for very large feedback gains
|
||||
// [limit is 1/15 so very large means ~15 or +23dB]
|
||||
|
||||
|
||||
double tanhXdX(double x) {
|
||||
|
||||
return 1-0.1*abs(x);
|
||||
double a = x*x;
|
||||
// IIRC I got this as Pade-approx for tanh(sqrt(x))/sqrt(x)
|
||||
return ((a + 105)*a + 945) / ((15*a + 420)*a + 945);
|
||||
}
|
||||
|
||||
|
||||
void Voice::run(Module* m, float* buffer, uint32_t samples) {
|
||||
// carry out per-voice calculations for each block of samples
|
||||
float out, t, fb;
|
||||
|
||||
double zi;
|
||||
|
||||
|
||||
// FIXME incorrect
|
||||
// calculate cutoff frequency
|
||||
float cut = 248.0f * (powf(2, (vcfCut - 0x1880) / 1143.0f));
|
||||
cut = M_PI * cut / sampleRate;
|
||||
cut = 0.25 * 6.2832 * cut / 48000.0f; // FIXME hardcoded values
|
||||
cut = cut / (1 + cut); // correct tuning warp
|
||||
|
||||
|
||||
// printf("%f\n", cut);
|
||||
|
||||
//if (cut > 0.5) cut = 0.5;
|
||||
|
||||
// double f = tan(cut);
|
||||
|
||||
|
||||
//printf("cut = %4f f = %4f\n", cut, f);
|
||||
|
||||
double r = (40.0/9.0) * m->res;
|
||||
|
||||
|
||||
float amp = vcaEnv / 4096.0f;
|
||||
|
||||
for (uint32_t i = 0; i < samples; i++) {
|
||||
|
|
@ -128,80 +100,13 @@ double zi;
|
|||
delay += m->subBuf[i] * subosc ;
|
||||
|
||||
out += m->noise * (0.8 - 1.6 * (rand() & 0xffff) / 65536.0);
|
||||
out *= 0.01;
|
||||
out *= 0.5;
|
||||
|
||||
// same time constant for both VCF and VCF RC circuits
|
||||
vcfRC = (cut - vcfRC) * m->vcaTC + vcfRC;
|
||||
|
||||
#if 1
|
||||
|
||||
//// LICENSE TERMS: Copyright 2012 Teemu Voipio
|
||||
//
|
||||
// You can use this however you like for pretty much any purpose,
|
||||
// as long as you don't claim you wrote it. There is no warranty.
|
||||
//
|
||||
// Distribution of substantial portions of this code in source form
|
||||
// must include this copyright notice and list of conditions.
|
||||
//
|
||||
|
||||
// input delay and state for member variables
|
||||
|
||||
// cutoff as normalized frequency (eg 0.5 = Nyquist)
|
||||
// resonance from 0 to 1, self-oscillates at settings over 0.9
|
||||
//void transistorLadder(
|
||||
// double cutoff, double resonance,
|
||||
// double * in, double * out, unsigned nsamples)
|
||||
//{
|
||||
// tuning and feedback
|
||||
|
||||
//------------------------------------------------------------------------------ sample loop
|
||||
//for(unsigned n = 0; n < nsamples; ++n)
|
||||
//{
|
||||
// input with half delay, for non-linearities
|
||||
double ih = 0.5 * (out + zi); zi = out;
|
||||
|
||||
//double ih = out;
|
||||
|
||||
// evaluate the non-linear gains
|
||||
double t0 = tanhXdX((ih * (r+1))- r * s[3]);
|
||||
|
||||
double t1 = tanhXdX(s[0]);
|
||||
double t2 = tanhXdX(s[1]);
|
||||
double t3 = tanhXdX(s[2]);
|
||||
double t4 = tanhXdX(s[3]);
|
||||
|
||||
double f = vcfRC;
|
||||
|
||||
// g# the denominators for solutions of individual stages
|
||||
double g0 = 1 / (1 + f*t1), g1 = 1 / (1 + f*t2);
|
||||
double g2 = 1 / (1 + f*t3), g3 = 1 / (1 + f*t4);
|
||||
|
||||
// f# are just factored out of the feedback solution
|
||||
double f3 = f*t3*g3, f2 = f*t2*g2*f3, f1 = f*t1*g1*f2, f0 = f*t0*g0*f1;
|
||||
|
||||
// solve feedback
|
||||
double y3 = (g3*s[3] + f3*g2*s[2] + f2*g1*s[1] + f1*g0*s[0] + f0*out) / (1 + r*f0);
|
||||
|
||||
// then solve the remaining outputs (with the non-linear gains here)
|
||||
double xx = t0*((out * (r+1)) - r*y3);
|
||||
double y0 = t1*g0*(s[0] + f*xx);
|
||||
double y1 = t2*g1*(s[1] + f*y0);
|
||||
double y2 = t3*g2*(s[2] + f*y1);
|
||||
|
||||
// update state
|
||||
s[0] += 2*f * (xx - y0);
|
||||
s[1] += 2*f * (y0 - y1);
|
||||
s[2] += 2*f * (y1 - y2);
|
||||
s[3] += 2*f * (y2 - t4*y3);
|
||||
|
||||
//out[n] = y3;
|
||||
// }
|
||||
|
||||
|
||||
#else
|
||||
|
||||
for (uint8_t ovs = 0; ovs < 4; ovs++) {
|
||||
fb = y3;
|
||||
fb = b4;
|
||||
// hard clip
|
||||
fb = ((out * 0.5) - fb) * m->res;
|
||||
if (fb > 4) fb = 4;
|
||||
|
|
@ -209,14 +114,14 @@ double zi;
|
|||
// fb = 1.5 * fb - 0.5 * fb * fb * fb;
|
||||
//
|
||||
|
||||
y0 = ((out + fb - y0) * vcfRC) + y0;
|
||||
y1 = ((y0 - y1) * vcfRC) + y1;
|
||||
y2 = ((y1 - y2) * vcfRC) + y2;
|
||||
y3 = ((y2 - y3) * vcfRC) + y3;
|
||||
b1 = ((out + fb - b1) * vcfRC) + b1;
|
||||
b2 = ((b1 - b2) * vcfRC) + b2;
|
||||
b3 = ((b2 - b3) * vcfRC) + b3;
|
||||
b4 = ((b3 - b4) * vcfRC) + b4;
|
||||
}
|
||||
#endif
|
||||
|
||||
vcaRC = (amp - vcaRC) * m->vcaTC + vcaRC;
|
||||
buffer[i] += 1 * m->vcaBuf[i] * vcaRC * y3;
|
||||
buffer[i] += 0.09367 * m->vcaBuf[i] * vcaRC * b4;
|
||||
|
||||
lastpw = m->pwmBuf[i];
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue