Simple and stupid chorus... work, but is not nice.

MicroMDAEPiano.ino

@@ -44,7 +44,7 @@
 #include "Encoder4.h"
 #include "LiquidCrystalPlus_I2C.h"
 #include "UI.h"
-
+#include <BALibrary.h> // had rename libraries/BALibrary/src/peripherals/BAPhysicalControls.cpp
 
 //*************************************************************************************************
 //* GLOBAL VARIABLES
@@ -57,33 +57,44 @@ AudioAnalyzePeak         peak_r;
 AudioAnalyzePeak         peak_l;
 AudioEffectFreeverb      freeverb_r;
 AudioEffectFreeverb      freeverb_l;
-AudioMixer4              mixer_r;
+AudioMixer4              reverb_mixer_r;
-AudioMixer4              mixer_l;
+AudioMixer4              reverb_mixer_l;
+AudioEffectDelay         delay_r;
+AudioEffectDelay         delay_l;
+AudioMixer4              delay_mixer_r;
+AudioMixer4              delay_mixer_l;
 AudioConnection          patchCord0(queue_r, peak_r);
 AudioConnection          patchCord1(queue_l, peak_l);
-AudioConnection          patchCord4(queue_r, freeverb_r);
+AudioConnection          patchCord2(queue_r, delay_r);
-AudioConnection          patchCord5(queue_l, freeverb_l);
+AudioConnection          patchCord3(queue_l, delay_l);
-AudioConnection          patchCord6(queue_r, 0, mixer_r, 0);
+AudioConnection          patchCord4(queue_r, 0, delay_mixer_r, 0);
-AudioConnection          patchCord7(queue_l, 0, mixer_l, 0);
+AudioConnection          patchCord5(delay_r, 0, delay_mixer_r, 1);
-AudioConnection          patchCord8(freeverb_r, 0, mixer_r, 1);
+AudioConnection          patchCord6(queue_l, 0, delay_mixer_l, 0);
-AudioConnection          patchCord9(freeverb_l, 0, mixer_l, 1);
+AudioConnection          patchCord7(delay_l, 0, delay_mixer_l, 1);
+AudioConnection          patchCord8(delay_mixer_r, freeverb_r);
+AudioConnection          patchCord9(delay_mixer_l, freeverb_l);
+AudioConnection          patchCord10(delay_mixer_r, 0, reverb_mixer_r, 0);
+AudioConnection          patchCord11(delay_mixer_l, 0, reverb_mixer_l, 0);
+AudioConnection          patchCord12(freeverb_r, 0, reverb_mixer_r, 1);
+AudioConnection          patchCord13(freeverb_l, 0, reverb_mixer_l, 1);
 #ifdef TEENSY_AUDIO_BOARD
 AudioOutputI2S           i2s1;
-AudioConnection          patchCord110(mixer_r, 0, i2s1, 0);
+AudioConnection          patchCord14(reverb_mixer_r, 0, i2s1, 0);
-AudioConnection          patchCord111(mixer_l, 0, i2s1, 1);
+AudioConnection          patchCord15(reverb_mixer_l, 0, i2s1, 1);
 AudioControlSGTL5000     sgtl5000_1;
 #else
 AudioOutputPT8211        pt8211_1;
 AudioAmplifier           volume_r;
 AudioAmplifier           volume_l;
-AudioConnection          patchCord10(mixer_r, volume_r);
+AudioConnection          patchCord14(reverb_mixer_r, volume_r);
-AudioConnection          patchCord11(mixer_l, volume_l);
+AudioConnection          patchCord15(reverb_mixer_l, volume_l);
-AudioConnection          patchCord12(volume_r, 0, pt8211_1, 1);
+AudioConnection          patchCord16(volume_r, 0, pt8211_1, 1);
-AudioConnection          patchCord13(volume_l, 0, pt8211_1, 0);
+AudioConnection          patchCord17(volume_l, 0, pt8211_1, 0);
 #endif
 
 // Objects
 mdaEPiano* ep;
+BALibrary::LowFrequencyOscillatorVector<float> chorus_lfo;
 
 #ifdef MIDI_DEVICE_DIN
 MIDI_CREATE_INSTANCE(HardwareSerial, MIDI_DEVICE_DIN, midi_serial);
@@ -127,25 +138,26 @@ void setup()
   Serial.begin(SERIAL_SPEED);
   delay(220);
 
-  // LCD display setup
+  /*
-  lcd.init();
+    // LCD display setup
-  lcd.blink_off();
+    lcd.init();
-  lcd.cursor_off();
+    lcd.blink_off();
-  lcd.backlight();
+    lcd.cursor_off();
-  lcd.noAutoscroll();
+    lcd.backlight();
-  lcd.clear();
+    lcd.noAutoscroll();
-  lcd.display();
+    lcd.clear();
-  lcd.show(0, 0, 20, " MicroMDAEPiano");
+    lcd.display();
-  lcd.show(1, 0, 16, "(c)parasiTstudio");
+    lcd.show(0, 0, 20, " MicroMDAEPiano");
-
+    lcd.show(1, 0, 16, "(c)parasiTstudio");
-  // Encoder setup
+
-  enc[0].write(INITIAL_ENC_L_VALUE);
+    // Encoder setup
-  enc_val[0] = enc[0].read();
+    enc[0].write(INITIAL_ENC_L_VALUE);
-  enc[1].write(INITIAL_ENC_R_VALUE);
+    enc_val[0] = enc[0].read();
-  enc_val[1] = enc[1].read();
+    enc[1].write(INITIAL_ENC_R_VALUE);
-  but[0].update();
+    enc_val[1] = enc[1].read();
-  but[1].update();
+    but[0].update();
-
+    but[1].update();
+  */
   // Debug output
   Serial.println(F("MicroMDAEPiano based on https://sourceforge.net/projects/mda-vst"));
   Serial.println(F("(c)2018 H. Wirtz <wirtz@parasitstudio.de>"));
@@ -208,6 +220,7 @@ void setup()
   Serial.print(1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES));
   Serial.println(F("ms)"));
 
+  // Epiano
   ep->setParameter(DECAY, 0.5);
   ep->setParameter(RELEASE, 0.5);
   ep->setParameter(HARDNESS, 0.7);
@@ -217,14 +230,24 @@ void setup()
   ep->setParameter(STEREO, 0.7);
   ep->setParameter(OVERDRIVE, 0.3);
 
+  // Reverb
   freeverb_r.roomsize(0.2);
   freeverb_l.roomsize(0.2);
   freeverb_r.damping(0.5);
   freeverb_l.damping(0.5);
-  mixer_r.gain(0, 0.7);
+  reverb_mixer_r.gain(0, 0.7);
-  mixer_l.gain(0, 0.7);
+  reverb_mixer_l.gain(0, 0.7);
-  mixer_r.gain(1, 0.3);
+  reverb_mixer_r.gain(1, 0.3);
-  mixer_l.gain(1, 0.3);
+  reverb_mixer_l.gain(1, 0.3);
+
+  // Chorus
+  delay_mixer_r.gain(0, 1.0 - DELAY_VOLUME);
+  delay_mixer_r.gain(1, DELAY_VOLUME);
+  delay_mixer_l.gain(0, 1.0 - DELAY_VOLUME);
+  delay_mixer_l.gain(1, DELAY_VOLUME);
+  delay_r.delay(0, DELAY_R_MS);
+  delay_l.delay(0, DELAY_L_MS);
+  chorus_lfo.setRateAudio(DELAY_FRQ);
 
   Serial.println(F("<setup end>"));
 
@@ -295,6 +318,11 @@ void loop()
     }
 #endif
 
+    float c = *chorus_lfo.getNextVector();
+
+    delay_r.delay(0, DELAY_R_MS / 2 * c * DELAY_R_INTENSITY + DELAY_R_MS / 2);
+    delay_l.delay(0, DELAY_L_MS / 2 * c * DELAY_R_INTENSITY + DELAY_L_MS / 2);
+
     queue_r.playBuffer();
     queue_l.playBuffer();
   }

UI.cpp

@@ -26,8 +26,16 @@
 
 UI::UI()
 {
-  LiquidCrystalPlus_I2C lcd(LCD_I2C_ADDRESS, LCD_CHARS, LCD_LINES);
+  lcd=new LiquidCrystalPlus_I2C(LCD_I2C_ADDRESS, LCD_CHARS, LCD_LINES);
-  enc[] = {Encoder4(ENC_L_PIN_A, ENC_L_PIN_B), Encoder4(ENC_R_PIN_A, ENC_R_PIN_B)};
+  enc[0] = new Encoder4(ENC_L_PIN_A, ENC_L_PIN_B);
-  enc_val[] = {INITIAL_ENC_L_VALUE, INITIAL_ENC_R_VALUE};
+  enc[1] = new Encoder4(ENC_R_PIN_A, ENC_R_PIN_B);
-  but[] = {Bounce(BUT_L_PIN, BUT_DEBOUNCE_MS), Bounce(BUT_R_PIN, BUT_DEBOUNCE_MS)};
+  enc_val[0] = INITIAL_ENC_L_VALUE;
+  enc_val[1] = INITIAL_ENC_R_VALUE;
+  but[0] = new Bounce(BUT_L_PIN, BUT_DEBOUNCE_MS);
+  but[1] = new Bounce(BUT_R_PIN, BUT_DEBOUNCE_MS);
+}
+
+UI::~UI()
+{
+  ;
 }

UI.h

@@ -36,9 +36,9 @@ class UI
     ~UI();
     
   private:
-    LiquidCrystalPlus_I2C lcd;
+    LiquidCrystalPlus_I2C* lcd;
-    Encoder4 enc[2];
+    Encoder4* enc[2];
     int32_t enc_val[2];
-    Bounce but[2];
+    Bounce* but[2];
-}
+};
 #endif

config.h

@@ -26,6 +26,13 @@
 
 #include "midinotes.h"
 
+#define DELAY_R_MS 10.0
+#define DELAY_L_MS 10.0
+#define DELAY_R_INTENSITY 0.5
+#define DELAY_L_INTENSITY 0.5
+#define DELAY_FRQ 1.0
+#define DELAY_VOLUME 0.5
+
 // ATTENTION! For better latency you have to redefine AUDIO_BLOCK_SAMPLES from
 // 128 to 64 in <ARDUINO-IDE-DIR>/cores/teensy3/AudioStream.h