Exchanged delay offset calculation from time to bytes (or better percent).

MicroMDAEPiano.ino

@@ -246,8 +246,8 @@ void setup()
   modulator.phase(0);
   modulator.amplitude(0.0);
   modulator.offset(0.0);
-  modchorus_r.offset(15.0);
-  modchorus_l.offset(15.0);
+  modchorus_r.offset(0);
+  modchorus_l.offset(0);
   // Butterworth filter, 12 db/octave
   modchorus_filter_r.setLowpass(0, 6000, 0.707);
   modchorus_filter_l.setLowpass(0, 6000, 0.707);

UI.hpp

@@ -240,10 +240,10 @@ char* get_chorus_frequency_value_text(void)
   return (chorus_frequency_value_text1);
 }
 
-char chorus_delay_value_text1[] = "       ";
+char chorus_delay_value_text1[] = "    ";
 char* get_chorus_delay_value_text(void)
 {
-  sprintf(chorus_delay_value_text1, "%2.1f ms", float(configuration.chorus_delay) / 10);
+  sprintf(chorus_delay_value_text1, "%03d%%", configuration.chorus_delay);
 
   return (chorus_delay_value_text1);
 }
@@ -2230,8 +2230,8 @@ void set_chorus_delay(uint8_t value)
   Serial.print(F("Set CHORUS_DELAY "));
   Serial.println(value);
 #endif
-  modchorus_r.offset(float(value) / 10);
-  modchorus_l.offset(float(value) / 10);
+  modchorus_r.offset(value);
+  modchorus_l.offset(value);
   configuration.chorus_delay = value;
 }
 
@@ -2256,8 +2256,8 @@ void set_chorus_feedback(uint8_t value)
   Serial.println(value);
 #endif
   float tmp = mapfloat(float(value), ENC_CHORUS_FEEDBACK_MIN, ENC_CHORUS_FEEDBACK_MAX, 0.0, 0.5);
-  modchorus_fbk_mixer_r.gain(0, 1.0 - tmp);
-  modchorus_fbk_mixer_l.gain(0, 1.0 - tmp);
+  //modchorus_fbk_mixer_r.gain(0, 1.0 - tmp);
+  //modchorus_fbk_mixer_l.gain(0, 1.0 - tmp);
   modchorus_fbk_mixer_r.gain(1, tmp);
   modchorus_fbk_mixer_l.gain(1, tmp);
   configuration.chorus_feedback = value;

config.h

@@ -235,8 +235,8 @@
 #define ENC_CHORUS_FREQUENCY_DEFAULT 30
 //
 #define ENC_CHORUS_DELAY_MIN 0
-#define ENC_CHORUS_DELAY_MAX 200
-#define ENC_CHORUS_DELAY_DEFAULT 200
+#define ENC_CHORUS_DELAY_MAX 100
+#define ENC_CHORUS_DELAY_DEFAULT 70
 //
 #define ENC_CHORUS_INTENSITY_MIN 0
 #define ENC_CHORUS_INTENSITY_MAX 100

effect_modulated_delay.cpp

@@ -49,7 +49,7 @@ boolean AudioEffectModulatedDelay::begin(short *delayline, int d_length)
 
   _delayline = NULL;
   _delay_length = 0;
-  _delay_offset = 0.0;
+  _delay_offset = 0;
   _cb_index = 0;
 
   if (delayline == NULL) {
@@ -66,18 +66,11 @@ boolean AudioEffectModulatedDelay::begin(short *delayline, int d_length)
   return (true);
 }
 
-float AudioEffectModulatedDelay::offset(float offset_value) // in ms
+void AudioEffectModulatedDelay::offset(uint8_t offset_value) // in %
 {
-  uint16_t offset_frames = floor((offset_value / 1000) * AUDIO_SAMPLE_RATE);
-
-  if (offset_frames > round(_delay_length * (1 - (MODULATION_MAX_FACTOR / 2))))
-    _delay_offset = floor(_delay_length * (1 - (MODULATION_MAX_FACTOR / 2)));
-  else if (offset_frames <= round(_delay_length * (MODULATION_MAX_FACTOR / 2)))
-    _delay_offset = floor(_delay_length * (MODULATION_MAX_FACTOR) / 2);
-  else
-    _delay_offset = offset_frames;
-
-  return (floor(offset_frames / AUDIO_SAMPLE_RATE * 1000));
+  if (offset_value > 100)
+    offset_value = 100;
+  _delay_offset = floor(offset_value / 200.0 * _delay_length);
 }
 
 void AudioEffectModulatedDelay::update(void)

effect_modulated_delay.h

@@ -44,7 +44,7 @@ class AudioEffectModulatedDelay :
 
     boolean begin(short *delayline, int delay_length);
     virtual void update(void);
-    virtual float offset(float offset_value);
+    virtual void offset(uint8_t offset_value);
 
   private:
     void set_modulator_filter_coeffs(void);