wirtz
/
BA_MicroMDAEPiano
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Works but with a clicking sound in the background.

Browse Source
chorus2
Holger Wirtz 6 years ago
parent dd2faa4797
commit 4a1ed44e75
3 changed files with 31 additions and 63 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. 43
      MicroMDAEPiano.ino
  2. 35
      mod-delay.cpp
  3. 12
      mod-delay.h

43
MicroMDAEPiano.ino
Unescape View File

@ -28,7 +28,7 @@
#include <MIDI.h>
#include <EEPROM.h>
#include <limits.h>
#include "mod-delay-gain.h"
#include "mod-delay.h"
#include "mdaEPiano.h"
#ifdef USE_XFADE_DATA
#include "mdaEPianoDataXfade.h"
@ -46,7 +46,6 @@
#include "LiquidCrystalPlus_I2C.h"
#include "UI.h"
//*************************************************************************************************
//* GLOBAL VARIABLES
//*************************************************************************************************
@ -61,11 +60,9 @@ AudioEffectFreeverb freeverb_l;
AudioMixer4 mixer_r;
AudioMixer4 mixer_l;
AudioSynthWaveform delaySweep_r;
AudioSynthWaveform envelope_r;
AudioSynthWaveform delaySweep_l;
AudioSynthWaveform envelope_l;
AudioEffectModDelayGain modulatedDelay_r;
AudioEffectModDelayGain modulatedDelay_l;
AudioEffectModDelay modulatedDelay_r;
AudioEffectModDelay modulatedDelay_l;
AudioConnection patchCord0(queue_r, peak_r);
AudioConnection patchCord1(queue_l, peak_l);
AudioConnection patchCord4(queue_r, freeverb_r);
@ -80,8 +77,6 @@ AudioConnection patchCord12(modulatedDelay_r, 0, mixer_r, 2);
AudioConnection patchCord13(modulatedDelay_l, 0, mixer_l, 2);
AudioConnection patchCord14(delaySweep_r, 0, modulatedDelay_r, 1);
AudioConnection patchCord15(delaySweep_l, 0, modulatedDelay_l, 1);
AudioConnection patchCord16(envelope_r, 0, modulatedDelay_r, 2);
AudioConnection patchCord17(envelope_l, 0, modulatedDelay_l, 2);
#ifdef TEENSY_AUDIO_BOARD
AudioOutputI2S i2s1;
AudioConnection patchCord18(mixer_r, 0, i2s1, 0);
@ -97,10 +92,6 @@ AudioConnection patchCord20(volume_r, 0, pt8211_1, 1);
AudioConnection patchCord21(volume_l, 0, pt8211_1, 0);
#endif
const int32_t delayBufferLength = 4500;
int16_t delayBuf1[delayBufferLength];
int16_t delayBuf2[delayBufferLength];
// Objects
mdaEPiano* ep;
@ -132,10 +123,13 @@ const uint16_t audio_block_time_us = 1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLE
#ifdef SHOW_CPU_LOAD_MSEC
elapsedMillis cpu_mem_millis;
#endif
float modFreq = 2.0;
enum MDA_EP_PARAM { DECAY, RELEASE, HARDNESS, TREBLE, PAN_TREM, LFO_RATE, VELOCITY_SENSE, STEREO, MAX_POLY, TUNE, DETUNE, OVERDRIVE };
const int32_t delayBufferLength = 1000;
int16_t delayBuf_r[delayBufferLength];
int16_t delayBuf_l[delayBufferLength];
float modFreq = 0.7;
enum MDA_EP_PARAM { DECAY, RELEASE, HARDNESS, TREBLE, PAN_TREM, LFO_RATE, VELOCITY_SENSE, STEREO, MAX_POLY, TUNE, DETUNE, OVERDRIVE };
//*************************************************************************************************
//* SETUP FUNCTION
@ -246,17 +240,16 @@ void setup()
freeverb_r.damping(0.5);
freeverb_l.damping(0.5);
delaySweep_r.begin(1, modFreq, WAVEFORM_SINE);
delaySweep_l.begin(1, modFreq, WAVEFORM_SINE);
delaySweep_l.phase(180.0);
envelope_r.begin(1, modFreq, WAVEFORM_SINE);
envelope_l.begin(1, modFreq, WAVEFORM_SINE);
envelope_l.phase(180.0);
mixer_r.gain(0, 0.7);
mixer_l.gain(0, 0.7);
mixer_r.gain(1, 0.3);
mixer_l.gain(1, 0.3);
modulatedDelay_r.setbuf(delayBufferLength, delayBuf_r);
modulatedDelay_l.setbuf(delayBufferLength, delayBuf_l);
delaySweep_r.begin(0.1, modFreq, WAVEFORM_SINE);
delaySweep_l.begin(0.1, modFreq, WAVEFORM_SINE);
//delaySweep_l.phase(180.0);
mixer_r.gain(0, 0.5);
mixer_l.gain(0, 0.5);
mixer_r.gain(1, 0.2);
mixer_l.gain(1, 0.2);
mixer_r.gain(2, 0.5);
mixer_l.gain(2, 0.5);

35
mod-delay-gain.cpp → mod-delay.cpp
Unescape View File

@ -36,18 +36,16 @@
*/
#include "mod-delay-gain.h"
#include "mod-delay.h"
#define INTERPOLATE (1)
void AudioEffectModDelayGain::update(void)
void AudioEffectModDelay::update(void)
{
audio_block_t *audioblock, *controlblockDelay, *controlblockGain;
int16_t *data, *end, *ctrlDelay, *ctrlGain;
audio_block_t *audioblock, *controlblockDelay;
int16_t *data, *end, *ctrlDelay;
int32_t extract_index;
int32_t temp;
#ifdef INTERPOLATE
int32_t interp_delta;
@ -67,20 +65,11 @@ void AudioEffectModDelayGain::update(void)
return;
}
controlblockGain = receiveReadOnly(2);
if (!controlblockGain) {
release(audioblock);
release(controlblockDelay);
return;
}
data = audioblock->data;
end = audioblock->data + AUDIO_BLOCK_SAMPLES;
ctrlDelay = controlblockDelay->data;
ctrlGain = controlblockGain->data;
do
{
delayline_p[insert_index] = *data;
@ -91,9 +80,8 @@ void AudioEffectModDelayGain::update(void)
}
#ifdef INTERPOLATE
//
interp_delta = (buffer_length * (*ctrlDelay));
delay_delta = interp_delta >> 15; // MSB's for delay len
delay_delta = (interp_delta >> 15); // MSB's for delay len
interp_delta &= 0x7fff; //LSBs for interp distance
#else
delay_delta = (buffer_length * (*ctrlDelay)) >> 15;
@ -115,27 +103,18 @@ void AudioEffectModDelayGain::update(void)
}
calc = delayline_p[next] - delayline_p[extract_index];
calc = (calc * interp_delta ) >> 15;
calc += delayline_p[extract_index];
//*data = calc;
temp = (int32_t)calc * (*ctrlGain);
*data = temp >> 15;
*data = calc;
#else
//data = delayline_p[extract_index];
temp = (int32_t)delayline_p[extract_index] * (*ctrlGain);
*data = temp >> 15;
*data = delayline_p[extract_index];
#endif
data++;
ctrlDelay++;
ctrlGain++;
} while (data < end);
transmit(audioblock);
release(audioblock);
release(controlblockDelay);
release(controlblockGain);
}

12
mod-delay-gain.h → mod-delay.h
Unescape View File

@ -43,14 +43,13 @@
#ifndef _mod_delay_h_
#define _mod_delay_h_
#include "AudioStream.h"
#include <Arduino.h>
class AudioEffectModDelayGain: public AudioStream
class AudioEffectModDelay: public AudioStream
{
public:
AudioEffectModDelayGain (void) : AudioStream(3, inputQueueArray)
AudioEffectModDelay (void) : AudioStream(2, inputQueueArray)
{
buffer_length = 0;
}
@ -64,10 +63,7 @@ class AudioEffectModDelayGain: public AudioStream
insert_index = 0;
buffer_length = delay_len;
for (int32_t i = 0; i < buffer_length; i++)
{
delayline_p[i] = 0;
}
memset(delayline_p, 0, buffer_length);
};
void inspect(void)
@ -81,7 +77,7 @@ class AudioEffectModDelayGain: public AudioStream
};
private:
audio_block_t *inputQueueArray[3];
audio_block_t *inputQueueArray[2];
int16_t *delayline_p;
Write Preview
Loading…
Cancel
Save