wirtz
/
MicroDexed
mirror of https://codeberg.org/dcoredump/MicroDexed.git
1
1
Fork 0
Code Issues Releases Wiki Activity

Fixes for chorus and stereo panning.

Browse Source
pull/112/head
Holger Wirtz 3 years ago
parent 021dd2075a
commit 68508e9148
5 changed files with 101 additions and 45 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 52
      MicroDexed.ino
  2. 4
      UI.hpp
  3. 72
      effect_modulated_delay.cpp
  4. 9
      effect_modulated_delay.h
  5. 9
      effect_stereo_panorama.cpp

52
MicroDexed.ino
Unescape View File

@ -85,9 +85,7 @@ AudioSynthWaveform ep_chorus_modulator;
#if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
AudioFilterBiquad ep_modchorus_filter;
#endif
AudioEffectModulatedDelay ep_modchorus_r;
AudioEffectModulatedDelay ep_modchorus_l;
AudioAmplifier ep_chorus_inverter;
AudioEffectModulatedDelayStereo ep_modchorus;
AudioMixer<2> ep_chorus_mixer_r;
AudioMixer<2> ep_chorus_mixer_l;
#endif
@ -254,19 +252,16 @@ AudioConnection patchCord[] = {
#if defined(USE_FX)
{ep_stereo_panorama, 0, ep_chorus_mixer_r, 0},
{ep_stereo_panorama, 1, ep_chorus_mixer_l, 0},
{ep_stereo_panorama, 0, ep_modchorus_r, 0},
{ep_stereo_panorama, 1, ep_modchorus_l, 0},
{ep_stereo_panorama, 0, ep_modchorus, 0},
{ep_stereo_panorama, 1, ep_modchorus, 1},
#if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
{ep_chorus_modulator, 0, ep_modchorus_filter, 0},
{ep_modchorus_filter, 0, ep_modchorus_r, 1},
{ep_modchorus_filter, 0, ep_chorus_inverter, 0},
{ep_modchorus_filter, 0, ep_modchorus, 2},
#else
{ep_chorus_modulator, 0, ep_modchorus_r, 1},
{ep_chorus_modulator, 0, ep_chorus_inverter, 0},
{ep_chorus_modulator, 0, ep_modchorus, 2},
#endif
{ep_chorus_inverter, 0, ep_modchorus_l, 1},
{ep_modchorus_r, 0, ep_chorus_mixer_r, 1},
{ep_modchorus_l, 0, ep_chorus_mixer_l, 1},
{ep_modchorus, 0, ep_chorus_mixer_r, 1},
{ep_modchorus, 1, ep_chorus_mixer_l, 1},
{ep_chorus_mixer_r, 0, reverb_mixer_r, REVERB_MIX_CH_EPIANO},
{ep_chorus_mixer_l, 0, reverb_mixer_l, REVERB_MIX_CH_EPIANO},
{ep_stereo_panorama, 0, master_mixer_r, MASTER_MIX_CH_EPIANO},
@ -588,41 +583,26 @@ void setup()
#if defined(USE_EPIANO)
// EP_CHORUS
ep_delayline_r = (int16_t*)malloc(MOD_DELAY_SAMPLE_BUFFER * sizeof(int16_t));
if (ep_delayline_r != NULL)
{
memset(ep_delayline_r, 0, MOD_DELAY_SAMPLE_BUFFER * sizeof(int16_t));
if (!ep_modchorus_r.begin(ep_delayline_r, MOD_DELAY_SAMPLE_BUFFER))
{
#ifdef DEBUG
Serial.println(F("AudioEffectModulatedDelay R - begin failed EP"));
#endif
while (1);
}
}
else
if (ep_delayline_r == NULL)
{
#ifdef DEBUG
Serial.println(F("AudioEffectModulatedDelay R - memory allocation failed EP"));
#endif
while (1);
}
ep_delayline_l = (int16_t*)malloc(MOD_DELAY_SAMPLE_BUFFER * sizeof(int16_t));
if (ep_delayline_l != NULL)
if (ep_delayline_l == NULL)
{
memset(ep_delayline_l, 0, MOD_DELAY_SAMPLE_BUFFER * sizeof(int16_t));
if (!ep_modchorus_l.begin(ep_delayline_l, MOD_DELAY_SAMPLE_BUFFER))
{
#ifdef DEBUG
Serial.println(F("AudioEffectModulatedDelay L - begin failed EP"));
Serial.println(F("AudioEffectModulatedDelay L - memory allocation failed EP"));
#endif
while (1);
}
while (1);
}
else
if (!ep_modchorus.begin(ep_delayline_r, ep_delayline_l, MOD_DELAY_SAMPLE_BUFFER))
{
#ifdef DEBUG
Serial.println(F("AudioEffectModulatedDelay L - memory allocation failed EP"));
Serial.println(F("AudioEffectModulatedDelayStereo - begin failed EP"));
#endif
while (1);
}
@ -641,7 +621,6 @@ void setup()
ep_chorus_mixer_l.gain(0, 1.0);
ep_chorus_mixer_r.gain(1, mapfloat(EP_CHORUS_LEVEL_DEFAULT, EP_CHORUS_LEVEL_MIN, EP_CHORUS_LEVEL_MAX, 0.0, 0.5));
ep_chorus_mixer_l.gain(1, mapfloat(EP_CHORUS_LEVEL_DEFAULT, EP_CHORUS_LEVEL_MIN, EP_CHORUS_LEVEL_MAX, 0.0, 0.5));
ep_chorus_inverter.gain(-1.0);
ep_stereo_panorama.panorama(mapfloat(EP_PANORAMA_DEFAULT, EP_PANORAMA_MIN, EP_PANORAMA_MAX, -1.0, 1.0));
#endif
#endif
@ -797,6 +776,8 @@ void setup()
Serial.println(F("<setup end>"));
#endif
ep_modchorus.set_bypass(true);
strcpy(seq.seq_name, "INIT Perf");
LCDML.OTHER_jumpToFunc(UI_func_voice_select);
}
@ -2608,7 +2589,6 @@ void set_fx_params(void)
ep_chorus_mixer_l.gain(0, 1.0);
ep_chorus_mixer_r.gain(1, mapfloat(configuration.fx.ep_chorus_level, EP_CHORUS_LEVEL_MIN, EP_CHORUS_LEVEL_MAX, 0.0, 0.5));
ep_chorus_mixer_l.gain(1, mapfloat(configuration.fx.ep_chorus_level, EP_CHORUS_LEVEL_MIN, EP_CHORUS_LEVEL_MAX, 0.0, 0.5));
ep_chorus_inverter.gain(-1.0);
#endif
#endif

4
UI.hpp
Unescape View File

@ -132,9 +132,7 @@ extern AudioSynthWaveform ep_chorus_modulator;
#if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
extern AudioFilterBiquad ep_modchorus_filter;
#endif
extern AudioEffectModulatedDelay ep_modchorus_r;
extern AudioEffectModulatedDelay ep_modchorus_l;
extern AudioAmplifier ep_chorus_inverter;
extern AudioEffectModulatedDelayStereo ep_modchorus;
extern AudioMixer<2> ep_chorus_mixer_r;
extern AudioMixer<2> ep_chorus_mixer_l;
extern AudioMixer<2> ep_delay_fb_mixer_r;

72
effect_modulated_delay.cpp
Unescape View File

@ -111,6 +111,19 @@ void AudioEffectModulatedDelay::update(void)
if (!modulation)
modulation = (audio_block_t*)&zeroblock;
if (bypass == true)
{
if (modulation != (audio_block_t*)&zeroblock)
release(modulation);
if (block != (audio_block_t*)&zeroblock)
{
transmit(block, 0);
release(block);
}
return;
}
if (block && modulation)
{
int16_t *bp;
@ -165,6 +178,16 @@ void AudioEffectModulatedDelay::update(void)
}
}
void AudioEffectModulatedDelay::set_bypass(bool b)
{
bypass = b;
}
bool AudioEffectModulatedDelay::get_bypass(void)
{
return (bypass);
}
boolean AudioEffectModulatedDelayStereo::begin(short *delayline_l, short *delayline_r, uint16_t d_length)
{
#if 0
@ -200,6 +223,8 @@ boolean AudioEffectModulatedDelayStereo::begin(short *delayline_l, short *delayl
memset(_delayline[1], 0, _delay_length * sizeof(int16_t));
_delay_offset[1] = _delay_length >> 1 ;
stereo = true;
return (true);
}
@ -213,7 +238,7 @@ void AudioEffectModulatedDelayStereo::update(void)
audio_block_t *block[2];
audio_block_t *modulation;
if (_delayline == NULL)
if (_delayline[0] == NULL || _delayline[1] == NULL)
return;
block[0] = receiveWritable(0);
@ -228,6 +253,25 @@ void AudioEffectModulatedDelayStereo::update(void)
if (!modulation)
modulation = (audio_block_t*)&zeroblock;
if (bypass == true)
{
if (modulation != (audio_block_t*)&zeroblock)
release(modulation);
if (block[0] != (audio_block_t*)&zeroblock)
{
transmit(block[0], 0);
release(block[0]);
}
if (block[1] != (audio_block_t*)&zeroblock)
{
transmit(block[1], 0);
release(block[1]);
}
return;
}
if (block[0] && block[1] && modulation)
{
int16_t *bp[2];
@ -274,7 +318,11 @@ void AudioEffectModulatedDelayStereo::update(void)
// RIGHT
// calculate the modulation-index as a floating point number for interpolation
mod_index = -1.0 * *mp * _delay_offset[0];
if (stereo == true)
mod_index = -1.0 * *mp * _delay_offset[0];
else
mod_index = *mp * _delay_offset[0];
mod_fraction = modff(mod_index, &mod_number); // split float of mod_index into integer (= mod_number) and fraction part
// write data into circular buffer (delayline)
@ -316,3 +364,23 @@ void AudioEffectModulatedDelayStereo::update(void)
release(block[1]);
}
}
void AudioEffectModulatedDelayStereo::set_stereo(bool s)
{
stereo = s;
}
bool AudioEffectModulatedDelayStereo::get_stereo(void)
{
return (stereo);
}
void AudioEffectModulatedDelayStereo::set_bypass(bool b)
{
bypass = b;
}
bool AudioEffectModulatedDelayStereo::get_bypass(void)
{
return (bypass);
}

9
effect_modulated_delay.h
Unescape View File

@ -45,6 +45,8 @@ class AudioEffectModulatedDelay :
boolean begin(short *delayline, uint16_t delay_length);
virtual void update(void);
virtual uint16_t get_delay_length(void);
virtual void set_bypass(bool b);
virtual bool get_bypass(void);
private:
audio_block_t *inputQueueArray[2];
@ -53,6 +55,7 @@ class AudioEffectModulatedDelay :
uint16_t _delay_length; // calculated number of samples of the delay
int16_t cb_mod_index; // current read pointer with modulation for the circular buffer
uint16_t _delay_offset;
bool bypass;
};
class AudioEffectModulatedDelayStereo :
@ -66,6 +69,10 @@ class AudioEffectModulatedDelayStereo :
boolean begin(short *delayline_l, short *delayline_r, uint16_t delay_length);
virtual void update(void);
virtual uint16_t get_delay_length(void);
virtual void set_stereo(bool s);
virtual bool get_stereo(void);
virtual void set_bypass(bool b);
virtual bool get_bypass(void);
private:
audio_block_t *inputQueueArray[3];
@ -74,5 +81,7 @@ class AudioEffectModulatedDelayStereo :
uint16_t _delay_length; // calculated number of samples of the delay
int16_t cb_mod_index[2]; // current read pointer with modulation for the circular buffer
uint16_t _delay_offset[2];
bool stereo;
bool bypass;
};
#endif

9
effect_stereo_panorama.cpp
Unescape View File

@ -68,7 +68,7 @@ inline float mapfloat(float val, float in_min, float in_max, float out_min, floa
void AudioEffectStereoPanorama::panorama(float p)
{
pan = mapfloat(p, 0.0, 1.0, -1.0, 1.0);
pan = mapfloat(p, -1.0, 1.0, -1.0, 1.0);
}
void AudioEffectStereoPanorama::update(void)
@ -98,13 +98,14 @@ void AudioEffectStereoPanorama::update(void)
{
if (pan > 0.0)
{
out_f[0][n] = (pan / 2.0 * in_f[1][n]) + ((1.0 - pan) / 2.0 * in_f[0][n]);
out_f[0][n] = (pan * in_f[1][n]) + ((1.0 - pan) * in_f[0][n]);
out_f[1][n] = (1.0 - pan) * in_f[1][n];
}
else
{
out_f[1][n] = (pan / 2.0 * in_f[0][n]) + ((1.0 - pan) / 2.0 * in_f[1][n]);
out_f[0][n] = (1.0 - pan) * in_f[0][n];
float _pan_ = fabs(pan);
out_f[1][n] = (_pan_ * in_f[0][n]) + ((1.0 - _pan_) * in_f[1][n]);
out_f[0][n] = (1.0 - _pan_) * in_f[0][n];
}
}
else

Write Preview
Loading…
Cancel
Save