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MicroDexed
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Exchanged double to float data types in PluginFX.

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Removed Teensy filter (is replaced by the Dexed internal filter) and antialias filter.
pull/4/head
Holger Wirtz 5 years ago
parent 5c164ccf27
commit ba84fbc9d6
5 changed files with 198 additions and 210 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 34
      MicroDexed.ino
  2. 86
      PluginFx.cpp
  3. 6
      PluginFx.h
  4. 9
      UI.cpp
  5. 1
      UI.h

34
MicroDexed.ino
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@ -51,21 +51,14 @@ uint8_t ui_main_state = UI_MAIN_VOICE;
AudioPlayQueue queue1;
AudioAnalyzePeak peak1;
AudioFilterStateVariable filter1;
AudioEffectDelay delay1;
AudioMixer4 mixer1;
AudioMixer4 mixer2;
AudioFilterBiquad antialias;
AudioConnection patchCord0(queue1, peak1);
AudioConnection patchCord1(queue1, antialias);
AudioConnection patchCord2(antialias, 0, filter1, 0);
AudioConnection patchCord3(filter1, 0, delay1, 0);
AudioConnection patchCord4(filter1, 0, mixer1, 0);
AudioConnection patchCord5(filter1, 0, mixer2, 0);
AudioConnection patchCord9(queue1, 0, mixer1, 0);
AudioConnection patchCord6(delay1, 0, mixer1, 1);
AudioConnection patchCord7(delay1, 0, mixer2, 2);
AudioConnection patchCord8(mixer1, delay1);
AudioConnection patchCord9(queue1, 0, mixer1, 3); // for disabling the filter
AudioConnection patchCord10(mixer1, 0, mixer2, 1);
#if defined(TEENSY_AUDIO_BOARD)
AudioOutputI2S i2s1;
@ -225,25 +218,18 @@ void setup()
#endif
// Init effects
antialias.setLowpass(0, 6000, 0.707);
filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
//filter1.resonance(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0));
filter1.resonance(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61);
filter1.octaveControl(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0));
delay1.delay(0, mapfloat(effect_delay_feedback, 0, ENC_DELAY_TIME_STEPS, 0.0, DELAY_MAX_TIME));
// mixer1 is the feedback-adding mixer, mixer2 the whole delay (with/without feedback) mixer
mixer1.gain(0, 1.0); // original signal
mixer1.gain(1, mapfloat(effect_delay_feedback, 0, ENC_DELAY_FB_STEPS, 0.0, 1.0)); // amount of feedback
mixer1.gain(0, 0.0); // filtered signal off
mixer1.gain(3, 1.0); // original signal on
mixer2.gain(0, 1.0 - mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // original signal
mixer2.gain(1, mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // delayed signal (including feedback)
mixer2.gain(2, mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // only delayed signal (without feedback)
// just for testing:
dexed->fx.uiReso = 0.5;
dexed->fx.uiGain = 0.5;
dexed->fx.uiCutoff = 0.5;
dexed->fx.Reso = 0.5;
dexed->fx.Gain = 0.5;
dexed->fx.Cutoff = 0.5;
// load default SYSEX data
load_sysex(configuration.bank, configuration.voice);
@ -433,7 +419,7 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
}
break;
case 102: // CC 102: filter frequency
effect_filter_frq = map(inValue, 0, 127, 0, ENC_FILTER_FRQ_STEPS);
/* effect_filter_frq = map(inValue, 0, 127, 0, ENC_FILTER_FRQ_STEPS);
if (effect_filter_frq == ENC_FILTER_FRQ_STEPS)
{
// turn "off" filter
@ -447,17 +433,17 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
mixer1.gain(3, 0.0); // original signal off
}
filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
handle_ui();
handle_ui(); */
break;
case 103: // CC 103: filter resonance
effect_filter_resonance = map(inValue, 0, 127, 0, ENC_FILTER_RES_STEPS);
/* effect_filter_resonance = map(inValue, 0, 127, 0, ENC_FILTER_RES_STEPS);
filter1.resonance(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61);
handle_ui();
handle_ui(); */
break;
case 104: // CC 104: filter octave
effect_filter_octave = map(inValue, 0, 127, 0, ENC_FILTER_OCT_STEPS);
/* effect_filter_octave = map(inValue, 0, 127, 0, ENC_FILTER_OCT_STEPS);
filter1.octaveControl(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0));
handle_ui();
handle_ui(); */
break;
case 105: // CC 105: delay time
effect_delay_time = map(inValue, 0, 127, 0, ENC_DELAY_TIME_STEPS);

86
PluginFx.cpp
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@ -1,25 +1,25 @@
/**
*
* Copyright (c) 2013-2014 Pascal Gauthier.
* Copyright (c) 2013-2014 Filatov Vadim.
*
* Filter taken from the Obxd project :
* https://github.com/2DaT/Obxd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
Copyright (c) 2013-2014 Pascal Gauthier.
Copyright (c) 2013-2014 Filatov Vadim.
Filter taken from the Obxd project :
https://github.com/2DaT/Obxd
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _USE_MATH_DEFINES
@ -29,16 +29,16 @@
const float dc = 1e-18;
inline static float tptpc(float& state, float inp, float cutoff) {
double v = (inp - state) * cutoff / (1 + cutoff);
double res = v + state;
float v = (inp - state) * cutoff / (1 + cutoff);
float res = v + state;
state = res + v;
return res;
}
inline static float tptlpupw(float & state , float inp , float cutoff , float srInv) {
cutoff = (cutoff * srInv) * M_PI;
double v = (inp - state) * cutoff / (1 + cutoff);
double res = v + state;
float v = (inp - state) * cutoff / (1 + cutoff);
float res = v + state;
state = res + v;
return res;
}
@ -52,9 +52,9 @@ static float logsc(float param, const float min,const float max,const float roll
}
PluginFx::PluginFx() {
uiCutoff = 1;
uiReso = 0;
uiGain = 1;
Cutoff = 1;
Reso = 0;
Gain = 1;
}
void PluginFx::init(int sr) {
@ -71,7 +71,7 @@ void PluginFx::init(int sr) {
rcor24 = (970.0 / 44000) * rcrate;
rcor24Inv = 1 / rcor24;
bright = tan((sampleRate*0.5f-10) * M_PI * sampleRateInv);
bright = tanf((sampleRate * 0.5f - 10) * M_PI * sampleRateInv);
R = 1;
rcor = (480.0 / 44000) * rcrate;
@ -112,24 +112,24 @@ void PluginFx::process(float *work, int sampleSize) {
}
dc_od = work[sampleSize - 1];
if ( uiGain != 1 ) {
if ( Gain != 1 ) {
for (int i = 0; i < sampleSize; i++ )
work[i] *= uiGain;
work[i] *= Gain;
}
// don't apply the LPF if the cutoff is to maximum
if ( uiCutoff == 1 )
if ( Cutoff == 1 )
return;
if ( uiCutoff != pCutoff || uiReso != pReso ) {
rReso = (0.991-logsc(1-uiReso,0,0.991));
if ( Cutoff != pCutoff || Reso != pReso ) {
rReso = (0.991 - logsc(1 - Reso, 0, 0.991));
R24 = 3.5 * rReso;
float cutoffNorm = logsc(uiCutoff,60,19000);
rCutoff = (float)tan(cutoffNorm * sampleRateInv * M_PI);
float cutoffNorm = logsc(Cutoff, 60, 19000);
rCutoff = (float)tanf(cutoffNorm * sampleRateInv * M_PI);
pCutoff = uiCutoff;
pReso = uiReso;
pCutoff = Cutoff;
pReso = Reso;
R = 1 - rReso;
}
@ -148,12 +148,12 @@ void PluginFx::process(float *work, int sampleSize) {
float y0 = NR24(s, g, lpc);
//first low pass in cascade
double v = (y0 - s1) * lpc;
double res = v + s1;
float v = (y0 - s1) * lpc;
float res = v + s1;
s1 = res + v;
//damping
s1 =atan(s1*rcor24)*rcor24Inv;
s1 = atanf(s1 * rcor24) * rcor24Inv;
float y1 = res;
float y2 = tptpc(s2, y1, g);
float y3 = tptpc(s3, y2, g);
@ -193,12 +193,12 @@ void PluginFx::process(float *work, int sampleSize) {
float v = NR(s,g);
float y1 = v*g + s1;
//damping
s1 = atan(s1 * rcor) * rcorInv;
s1 = atanf(s1 * rcor) * rcorInv;
float y2 = y1*g + s2;
s2 = y2 + y1*g;
double mc;
float mc;
if(!bandPassSw)
mc = (1-mm)*y2 + (mm)*v;
else

6
PluginFx.h
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@ -61,9 +61,9 @@ class PluginFx {
PluginFx();
// this is set directly by the ui / parameter
float uiCutoff;
float uiReso;
float uiGain;
float Cutoff;
float Reso;
float Gain;
void init(int sampleRate);
void process(float *work, int sampleSize);

9
UI.cpp
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@ -292,7 +292,7 @@ void handle_ui(void)
switch (ui_main_state)
{
case UI_MAIN_FILTER_FRQ:
if (enc[i].read() <= 0)
/* if (enc[i].read() <= 0)
enc[i].write(0);
else if (enc[i].read() > ENC_FILTER_FRQ_STEPS)
enc[i].write(ENC_FILTER_FRQ_STEPS);
@ -314,9 +314,10 @@ void handle_ui(void)
Serial.print(F("Setting filter frequency to: "));
Serial.println(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0, DEC);
#endif
*/
break;
case UI_MAIN_FILTER_RES:
if (enc[i].read() <= 0)
/* if (enc[i].read() <= 0)
enc[i].write(0);
else if (enc[i].read() > ENC_FILTER_RES_STEPS)
enc[i].write(ENC_FILTER_RES_STEPS);
@ -328,9 +329,10 @@ void handle_ui(void)
Serial.print(F("Setting filter resonance to: "));
Serial.println(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61, 2);
#endif
*/
break;
case UI_MAIN_FILTER_OCT:
if (enc[i].read() <= 0)
/* if (enc[i].read() <= 0)
enc[i].write(0);
else if (enc[i].read() > ENC_FILTER_OCT_STEPS)
enc[i].write(ENC_FILTER_OCT_STEPS);
@ -340,6 +342,7 @@ void handle_ui(void)
Serial.print(F("Setting filter octave control to: "));
Serial.println(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0), 2);
#endif
*/
break;
}
ui_show_effects_filter();

1
UI.h
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@ -54,7 +54,6 @@ extern uint8_t effect_delay_time;
extern uint8_t effect_delay_feedback;
extern uint8_t effect_delay_volume;
extern bool effect_delay_sync;
extern AudioFilterStateVariable filter1;
extern AudioEffectDelay delay1;
extern AudioMixer4 mixer1;
extern AudioMixer4 mixer2;

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