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MicroDexed
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Reworking on the audio chain.

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pull/3/head
Holger Wirtz 5 years ago
parent d9219bd74d
commit 1daf236276
3 changed files with 85 additions and 97 deletions
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  1. 142
      MicroDexed.ino
  2. 32
      UI.hpp
  3. 8
      config.h

142
MicroDexed.ino
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@ -42,85 +42,70 @@
AudioPlayQueue queue1;
AudioAnalyzePeak peak1;
AudioEffectDelay delay1;
#ifdef USE_REVERB
AudioEffectFreeverbStereo freeverbs1;
#endif
AudioEffectModulatedDelay modchorus;
#if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
AudioFilterBiquad modchorus_filter;
#endif
AudioSynthWaveform modulator;
AudioMixer4 chorus_mixer;
AudioMixer4 delay_mixer;
AudioMixer4 delay_fb_mixer;
AudioMixer4 reverb_mixer_r;
AudioMixer4 reverb_mixer_l;
AudioMixer4 master_mixer_r;
AudioMixer4 master_mixer_l;
AudioAmplifier volume_r;
AudioAmplifier volume_l;
#ifdef MIDI_DEVICE_USB
AudioOutputUSB usb1;
#endif
AudioConnection patchCord0(queue1, peak1);
AudioConnection patchCord1(queue1, 0, chorus_mixer, 0);
AudioConnection patchCord3(queue1, 0, delay_mixer, 0);
AudioConnection patchCord4(queue1, 0, delay_fb_mixer, 0);
#ifdef USE_REVERB
AudioConnection patchCord5(queue1, 0, reverb_mixer_r, 0);
AudioConnection patchCord6(queue1, 0, reverb_mixer_l, 0);
#endif
AudioConnection patchCord7(queue1, 0, modchorus, 0);
AudioConnection patchCord8(modulator, 0, modchorus, 1);
AudioConnection patchCord1(queue1, 0, delay_fb_mixer, 0);
AudioConnection patchCord2(queue1, 0, modchorus, 0);
AudioConnection patchCord3(queue1, 0 , master_mixer_r, 0);
AudioConnection patchCord4(queue1, 0 , master_mixer_l, 0);
AudioConnection patchCord5(modulator, 0, modchorus, 1);
#if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
AudioConnection patchCord9(modchorus, modchorus_filter);
AudioConnection patchCord10(modchorus_filter, 0, chorus_mixer, 1);
AudioFilterBiquad modchorus_filter;
AudioConnection patchCord6(modchorus, modchorus_filter);
AudioConnection patchCord7(modchorus_filter, 0, master_mixer_r, 3);
AudioConnection patchCord8(modchorus_filter, 0, master_mixer_l, 3);
#else
AudioConnection patchCord9(modchorus, 0, chorus_mixer, 1);
AudioConnection patchCord9(modchorus, 0, master_mixer_r, 3);
AudioConnection patchCord10(modchorus, 0, master_mixer_l, 3);
#endif
AudioConnection patchCord11(chorus_mixer, 0, delay_mixer, 1);
AudioConnection patchCord12(delay_fb_mixer, 0, delay_mixer, 1);
AudioConnection patchCord13(delay_mixer, 0, reverb_mixer_r, 0);
AudioConnection patchCord14(delay_mixer, 0, reverb_mixer_l, 0);
AudioConnection patchCord15(delay1, 0, delay_mixer, 2);
AudioConnection patchCord16(delay_fb_mixer, delay1);
#ifdef USE_REVERB
AudioConnection patchCord17(delay_mixer, 0, freeverbs1, 0);
AudioConnection patchCord18(delay_mixer, 0, freeverbs1, 1);
AudioConnection patchCord19(freeverbs1, 0, reverb_mixer_r, 1);
AudioConnection patchCord20(freeverbs1, 1, reverb_mixer_l, 1);
AudioConnection patchCord21(reverb_mixer_r, volume_r);
AudioConnection patchCord22(reverb_mixer_l, volume_l);
#else
AudioConnection patchCord17(delay_mixer, volume_r);
AudioConnection patchCord18(delay_mixer, volume_l);
AudioEffectFreeverbStereo freeverbs1;
AudioConnection patchCord11(queue1, 0, freeverbs1, 0);
AudioConnection patchCord12(queue1, 0, freeverbs1, 1);
AudioConnection patchCord13(freeverbs1, 0, master_mixer_r, 1);
AudioConnection patchCord14(freeverbs1, 1, master_mixer_l, 1);
#endif
AudioConnection patchCord15(delay_fb_mixer, delay1);
AudioConnection patchCord16(delay1, 0, delay_fb_mixer, 1);
AudioConnection patchCord17(delay1, 0, master_mixer_r, 2);
AudioConnection patchCord18(delay1, 0, master_mixer_l, 2);
AudioConnection patchCord19(master_mixer_r, volume_r);
AudioConnection patchCord20(master_mixer_l, volume_l);
#ifdef MIDI_DEVICE_USB
AudioConnection patchCord23(volume_r, 0, usb1, 0);
AudioConnection patchCord24(volume_l, 0, usb1, 1);
AudioOutputUSB usb1;
AudioConnection patchCord21(volume_r, 0, usb1, 0);
AudioConnection patchCord22(volume_l, 0, usb1, 1);
#endif
#if defined(TEENSY_AUDIO_BOARD)
AudioOutputI2S i2s1;
AudioConnection patchCord25(volume_r, 0, i2s1, 0);
AudioConnection patchCord26(volume_l, 0, i2s1, 1);
AudioConnection patchCord23(volume_r, 0, i2s1, 0);
AudioConnection patchCord24(volume_l, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000_1;
#elif defined(TGA_AUDIO_BOARD)
AudioOutputI2S i2s1;
AudioConnection patchCord27(volume_r, 0, i2s1, 0);
AudioConnection patchCord28(volume_l, 0, i2s1, 1);
AudioConnection patchCord25(volume_r, 0, i2s1, 0);
AudioConnection patchCord26(volume_l, 0, i2s1, 1);
AudioControlWM8731master wm8731_1;
#elif defined(TEENSY_DAC)
AudioOutputAnalogStereo dacOut;
AudioConnection patchCord11(volume_r, 0, dacOut, 0);
AudioConnection patchCord12(volume_l, 0, dacOut, 1);
#elif defined(PT8211_AUDIO)
AudioOutputPT8211 pt8211_1;
AudioConnection patchCord27(volume_r, 0, pt8211_1, 0);
AudioConnection patchCord28(volume_l, 0, pt8211_1, 1);
#elif defined(TEENSY_DAC_SYMMETRIC)
AudioOutputAnalogStereo dacOut;
AudioMixer4 invMixer;
AudioConnection patchCord11(volume_l, 0, dacOut , 0);
AudioConnection patchCord12(volume_l, 0, invMixer, 0);
AudioConnection patchCord13(invMixer, 0, dacOut , 1);
AudioConnection patchCord29(volume_l, 0, dacOut , 0);
AudioConnection patchCord30(volume_l, 0, invMixer, 0);
AudioConnection patchCord31(invMixer, 0, dacOut , 1);
#else
AudioOutputPT8211 pt8211_1;
AudioConnection patchCord29(volume_r, 0, pt8211_1, 0);
AudioConnection patchCord30(volume_l, 0, pt8211_1, 1);
AudioOutputAnalogStereo dacOut;
AudioConnection patchCord32(volume_r, 0, dacOut, 0);
AudioConnection patchCord33(volume_l, 0, dacOut, 1);
#endif
Dexed* MicroDexed[NUM_DEXED];
@ -244,7 +229,7 @@ void setup()
AudioNoInterrupts();
AudioMemory(AUDIO_MEM);
#ifdef TEENSY_AUDIO_BOARD
#if defined(TEENSY_AUDIO_BOARD)
sgtl5000_1.enable();
sgtl5000_1.dacVolumeRamp();
//sgtl5000_1.dacVolumeRampLinear();
@ -277,13 +262,13 @@ void setup()
wm8731_1.enable();
wm8731_1.volume(1.0);
Serial.println(F("TGA board enabled."));
#elif defined(TEENSY_DAC)
Serial.println(F("Internal DAC enabled."));
#elif defined(PT8211_AUDIO)
Serial.println(F("PT8211 enabled."));
#elif defined(TEENSY_DAC_SYMMETRIC)
invMixer.gain(0,-1.f);
invMixer.gain(0, -1.f);
Serial.println(F("Internal DAC using symmetric outputs enabled."));
#else
Serial.println(F("PT8211 enabled."));
Serial.println(F("Internal DAC enabled."));
#endif
// start SD card
@ -338,6 +323,21 @@ void setup()
Serial.print(MOD_DELAY_SAMPLE_BUFFER, DEC);
Serial.println(F(" samples"));
#endif
master_mixer_r.gain(0, 1.0);
master_mixer_l.gain(0, 1.0);
freeverbs1.roomsize(configuration.reverb_roomsize / 100.0);
freeverbs1.damping(configuration.reverb_damping / 100.0);
master_mixer_r.gain(1, 0.0);
master_mixer_l.gain(1, 0.0);
delay1.delay(0, 0.0);
// delay_fb_mixer is the feedback-adding mixer
delay_fb_mixer.gain(0, 1.0 - configuration.delay_feedback / 100.0); // original signal
delay_fb_mixer.gain(1, configuration.delay_feedback / 100.0); // amount of feedback
master_mixer_r.gain(2, 0.0);
master_mixer_l.gain(2, 0.0);
modulator.begin(MOD_WAVEFORM);
modulator.phase(0);
modulator.amplitude(0.5);
@ -356,24 +356,8 @@ void setup()
modchorus_filter.setLowpass(2, MOD_FILTER_CUTOFF_HZ, 0.54);
modchorus_filter.setLowpass(3, MOD_FILTER_CUTOFF_HZ, 1.3);
#endif
chorus_mixer.gain(0, 1.0);
chorus_mixer.gain(1, 0.0);
delay1.delay(0, 0.0);
// delay_fb_mixer is the feedback-adding mixer, delay_mixer_r the whole delay (with/without feedback) mixer
delay_fb_mixer.gain(0, 1.0); // original signal
delay_fb_mixer.gain(1, mapfloat(effect_delay_feedback, 0, ENC_DELAY_FB_STEPS, 0.0, 1.0)); // amount of feedback
delay_mixer.gain(0, 1.0 - mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // original signal
delay_mixer.gain(1, mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // delayed signal (including feedback)
delay_mixer.gain(2, mapfloat(effect_delay_volume, 0, ENC_DELAY_VOLUME_STEPS, 0.0, 1.0)); // only delayed signal (without feedback)
reverb_mixer_r.gain(0, 1.0);
reverb_mixer_l.gain(0, 1.0);
reverb_mixer_r.gain(1, 0.0);
reverb_mixer_l.gain(1, 0.0);
freeverbs1.roomsize(configuration.reverb_roomsize / 100);
master_mixer_r.gain(3, 0.0);
master_mixer_l.gain(3, 0.0);
for (uint8_t i = 0; i < NUM_DEXED; i++)
{

32
UI.hpp
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@ -59,11 +59,9 @@ extern AudioEffectFreeverbStereo freeverbs1;
#endif
extern AudioEffectModulatedDelay modchorus;
extern AudioSynthWaveform modulator;
extern AudioMixer4 chorus_mixer;
extern AudioMixer4 delay_mixer;
extern AudioMixer4 delay_fb_mixer;
extern AudioMixer4 reverb_mixer_r;
extern AudioMixer4 reverb_mixer_l;
extern AudioMixer4 master_mixer_r;
extern AudioMixer4 master_mixer_l;
extern AudioAmplifier volume_r;
extern AudioAmplifier volume_l;
@ -626,9 +624,9 @@ void UI_func_sound(uint8_t param)
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Filter Res."));
lcd.print(F("Sound"));
lcd.setCursor(0, 1);
lcd.print(F("<value>"));
lcd.print(F("not implemented"));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
@ -651,7 +649,7 @@ void UI_func_reverb_roomsize(uint8_t param)
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Rev. Roomsize"));
lcd.print(F("Reverb Roomsize"));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
@ -692,7 +690,7 @@ void UI_func_reverb_damping(uint8_t param)
{
// setup function
lcd.setCursor(0, 0);
lcd.print(F("Rev. Damping"));
lcd.print(F("Reverb Damping"));
}
if (LCDML.FUNC_loop()) // ****** LOOP *********
@ -760,8 +758,8 @@ void UI_func_reverb_level(uint8_t param)
lcd.setCursor(0, 1);
lcd_display_int(configuration.reverb_level, 3, true, true, false);
reverb_mixer_r.gain(1, configuration.reverb_level / 100.0);
reverb_mixer_l.gain(1, configuration.reverb_level / 100.0);
master_mixer_r.gain(1, configuration.reverb_level / 100.0);
master_mixer_l.gain(1, configuration.reverb_level / 100.0);
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
@ -800,8 +798,9 @@ void UI_func_chorus_frequency(uint8_t param)
}
}
lcd.setCursor(0, 1);
lcd_display_float(configuration.chorus_frequency / 10.0, 2, 1, true, true, false);
lcd_display_float(configuration.chorus_frequency / 10.0, 2, 1, false, true, false);
lcd.print(" Hz");
modulator.frequency(configuration.chorus_frequency / 10.0);
}
@ -937,7 +936,9 @@ void UI_func_chorus_level(uint8_t param)
lcd.setCursor(0, 1);
lcd_display_int(configuration.chorus_level, 3, true, true, false);
chorus_mixer.gain(1, configuration.chorus_level / 100.0);
master_mixer_r.gain(3, configuration.chorus_level / 100.0);
master_mixer_l.gain(3, configuration.chorus_level / 100.0);
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
@ -1020,7 +1021,7 @@ void UI_func_delay_feedback(uint8_t param)
lcd_display_int(configuration.delay_feedback, 3, true, true, false);
delay_fb_mixer.gain(1, configuration.delay_feedback / 100.0 ); // amount of feedback
delay_mixer.gain(0, 1.0 - configuration.delay_feedback / 100.0); // original signal
delay_fb_mixer.gain(0, 1.0 - configuration.delay_feedback / 100.0); // original signal
}
if (LCDML.FUNC_close()) // ****** STABLE END *********
@ -1061,7 +1062,8 @@ void UI_func_delay_level(uint8_t param)
lcd.setCursor(0, 1);
lcd_display_int(configuration.delay_level, 3, true, true, false);
delay_mixer.gain(1, configuration.delay_level / 100.0);
master_mixer_r.gain(2, configuration.delay_level / 100.0);
master_mixer_l.gain(2, configuration.delay_level / 100.0);
}
if (LCDML.FUNC_close()) // ****** STABLE END *********

8
config.h
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@ -53,9 +53,11 @@
// AUDIO
// If nothing is defined Teensy internal DAC is used as audio output device!
// Left and right channel audio signal is presented on pins A21 and A22.
#define TEENSY_DAC
// #define TEENSY_AUDIO_BOARD 1
// #define TGA_AUDIO_BOARD
//#define TEENSY_DAC
//#define TEENSY_DAC_SYMMETRIC
//#define TEENSY_AUDIO_BOARD
//#define TGA_AUDIO_BOARD
#define PT8211_AUDIO
//*************************************************************************************************
//* MIDI SETTINGS

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