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Started to add MDA-EPiano.

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pull/112/head
Holger Wirtz 3 years ago
parent 0412e88ba4
commit 1cbb1b0962
16 changed files with 44306 additions and 16 deletions
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  1. 130
      MicroDexed.ino
  2. 35
      UI.hpp
  3. 8
      config.h
  4. 128
      third-party/Synth_MDA_EPiano/.gitignore
  5. 674
      third-party/Synth_MDA_EPiano/LICENSE-GPL3.txt
  6. 44
      third-party/Synth_MDA_EPiano/README.md
  7. 48
      third-party/Synth_MDA_EPiano/examples/MDA_EP_SimplePlay/MDA_EP_SimplePlay.ino
  8. 10
      third-party/Synth_MDA_EPiano/library.properties
  9. 557
      third-party/Synth_MDA_EPiano/src/mdaEPiano.cpp
  10. 159
      third-party/Synth_MDA_EPiano/src/mdaEPiano.h
  11. 21152
      third-party/Synth_MDA_EPiano/src/mdaEPianoData.h
  12. 21152
      third-party/Synth_MDA_EPiano/src/mdaEPianoDataXfade.h
  13. 58
      third-party/Synth_MDA_EPiano/src/synth_epiano.h
  14. 58
      third-party/Synth_MDA_EPiano/src/synth_mda_epiano.h
  15. 9
      third-party/Synth_MDA_EPiano/utility/gen_xfade.sh
  16. 100
      third-party/Synth_MDA_EPiano/utility/xfade_generator.c

130
MicroDexed.ino
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@ -55,9 +55,13 @@ using namespace TeensyTimerTool;
#ifdef SGTL5000_AUDIO_ENHANCE
#include "control_sgtl5000plus.h"
#endif
#if NUM_EPIANO_VOICES > 0
#include "synth_mda_epiano.h"
#endif
// Audio engines
AudioSynthDexed* MicroDexed[NUM_DEXED];
AudioSynthEPiano ep(NUM_EPIANO_VOICES);
#if defined(USE_FX)
AudioSynthWaveform* chorus_modulator[NUM_DEXED];
@ -65,18 +69,41 @@ AudioSynthWaveform* chorus_modulator[NUM_DEXED];
AudioFilterBiquad* modchorus_filter[NUM_DEXED];
#endif
AudioEffectModulatedDelay* modchorus[NUM_DEXED];
AudioMixer<4>* chorus_mixer[NUM_DEXED];
AudioMixer<4>* delay_fb_mixer[NUM_DEXED];
AudioMixer<2>* chorus_mixer[NUM_DEXED];
AudioMixer<2>* delay_fb_mixer[NUM_DEXED];
AudioEffectDelay* delay_fx[NUM_DEXED];
AudioMixer<4>* delay_mixer[NUM_DEXED];
AudioMixer<2>* delay_mixer[NUM_DEXED];
#endif
AudioEffectMonoStereo* mono2stereo[NUM_DEXED];
AudioMixer<4> microdexed_peak_mixer;
#if defined(USE_FX) && defined(USE_EPIANO)
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;
AudioMixer<2> ep_chorus_mixer_r;
AudioMixer<2> ep_chorus_mixer_l;
AudioMixer<2> ep_delay_fb_mixer_r;
AudioMixer<2> ep_delay_fb_mixer_l;
AudioEffectDelay ep_delay_fx_r;
AudioEffectDelay ep_delay_fx_l;
AudioMixer<2> ep_delay_mixer_r;
AudioMixer<2> ep_delay_mixer_l;
#endif
AudioMixer<2> microdexed_peak_mixer;
AudioAnalyzePeak microdexed_peak;
#if defined(USE_FX)
#if defined(USE_EPIANO)
AudioMixer<4> reverb_mixer_r;
AudioMixer<4> reverb_mixer_l;
#else
AudioMixer<3> reverb_mixer_r;
AudioMixer<3> reverb_mixer_l;
#endif
#if defined(USE_PLATEREVERB)
AudioEffectPlateReverb reverb;
#elif defined(USE_FREEVERB_SIMD)
@ -85,8 +112,7 @@ AudioEffectFreeverbSIMDStereo freeverb;
AudioEffectFreeverbStereoFloat freeverb;
#endif
#endif
AudioMixer<4> master_mixer_r;
AudioMixer<4> master_mixer_l;
AudioAmplifier volume_r;
AudioAmplifier volume_l;
AudioEffectStereoMono stereo2mono;
@ -216,6 +242,43 @@ AudioConnection patchCord[] = {
{drum_mixer_l, 0, master_mixer_l, 2},
#endif
#endif
#if defined(USE_EPIANO)
#if defined(USE_FX)
{ep, 0, ep_chorus_mixer_r, 0},
{ep, 1, ep_chorus_mixer_l, 0},
{ep, 0, ep_modchorus_r, 0},
{ep, 1, ep_modchorus_l, 0},
#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_chorus_inverter, 0, ep_modchorus_l, 1},
#else
{ep_chorus_modulator, 0, ep_modchorus_r, 1},
{ep_chorus_modulator, 0, ep_chorus_inverter, 0},
{ep_chorus_inverter, 0, ep_modchorus_l, 1},
#endif
{ep_modchorus_r, 0, ep_chorus_mixer_r, 1},
{ep_modchorus_l, 0, ep_chorus_mixer_l, 1},
{ep_chorus_mixer_r, 0, ep_delay_fb_mixer_r, 0},
{ep_chorus_mixer_l, 0, ep_delay_fb_mixer_l, 0},
{ep_chorus_mixer_r, 0, ep_delay_mixer_r, 0},
{ep_chorus_mixer_l, 0, ep_delay_mixer_l, 0},
{ep_delay_fb_mixer_r, 0, ep_delay_fx_r, 0},
{ep_delay_fb_mixer_l, 0, ep_delay_fx_l, 0},
{ep_delay_fx_r, 0, ep_delay_fb_mixer_r, 1},
{ep_delay_fx_l, 0, ep_delay_fb_mixer_l, 1},
{ep_delay_fx_r, 0, ep_delay_mixer_r, 1},
{ep_delay_fx_l, 0, ep_delay_mixer_l, 1},
{ep_delay_mixer_r, 0, reverb_mixer_r, 3},
{ep_delay_mixer_l, 0, reverb_mixer_l, 5},
#else
{ep, 0, master_mixer_r, 3},
{ep, 1, master_mixer_l, 3}, ,
#endif
#endif
};
//
@ -239,10 +302,10 @@ void create_audio_dexed_chain(uint8_t instance_id)
modchorus_filter[instance_id] = new AudioFilterBiquad();
#endif
modchorus[instance_id] = new AudioEffectModulatedDelay();
chorus_mixer[instance_id] = new AudioMixer<4>();
delay_fb_mixer[instance_id] = new AudioMixer<4>();
chorus_mixer[instance_id] = new AudioMixer<2>();
delay_fb_mixer[instance_id] = new AudioMixer<2>();
delay_fx[instance_id] = new AudioEffectDelay();
delay_mixer[instance_id] = new AudioMixer<4>();
delay_mixer[instance_id] = new AudioMixer<2>();
#endif
dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, microdexed_peak_mixer, instance_id);
@ -521,6 +584,55 @@ void setup()
}
#endif
// Setup EPiano
#if defined(USE_FX)
// EP_CHORUS
switch (configuration.fx.ep_chorus_waveform[instance_id])
{
case 0:
ep_chorus_modulator.begin(WAVEFORM_TRIANGLE);
break;
case 1:
ep_chorus_modulator.begin(WAVEFORM_SINE);
break;
default:
ep_chorus_modulator.begin(WAVEFORM_TRIANGLE);
}
ep_chorus_modulator.phase(0);
ep_chorus_modulator.frequency(configuration.fx.ep_chorus_frequency[i
nstance_id] / 10.0);
ep_chorus_modulator.amplitude(mapfloat(configuration.fx.ep_chorus_depth, EP_CHORUS_DEPTH_MIN, EP_CHORUS_DEPTH_MAX, 0.0, 1.0));
ep_chorus_modulator.offset(0.0);
#if MOD_FILTER_OUTPUT == MOD_BUTTERWORTH_FILTER_OUTPUT
// Butterworth filter, 12 db/octave
ep_modchorus_filter[instance_id]->setLowpass(0, MOD_FILTER_CUTOFF_HZ, 0.707);
#elif MOD_FILTER_OUTPUT == MOD_LINKWITZ_RILEY_FILTER_OUTPUT
// Linkwitz-Riley filter, 48 dB/octave
ep_modchorus_filter[instance_id]->setLowpass(0, MOD_FILTER_CUTOFF_HZ, 0.54);
ep_modchorus_filter[instance_id]->setLowpass(1, MOD_FILTER_CUTOFF_HZ, 1.3);
ep_modchorus_filter[instance_id]->setLowpass(2, MOD_FILTER_CUTOFF_HZ, 0.54);
ep_modchorus_filter[instance_id]->setLowpass(3, MOD_FILTER_CUTOFF_HZ, 1.3);
#endif
#endif
ep_chorus_mixer_r.gain(0, 1.0);
ep_chorus_mixer_l.gain(0, 1.0);
ep_chorus_mixer.gain(1, mapfloat(configuration.fx.ep_chorus_level, EP_CHORUS_LEVEL_MIN, EP_CHORUS_LEVEL_MAX, 0.0, 0.5));
ep_chorus_mixer.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);
ep_delay_mixer_r.gain(0, 1.0);
ep_delay_mixer_l.gain(0, 1.0);;
ep_delay_mixer_r.gain(1, midi_volume_transform(map(configuration.fx.ep_delay_level, EP_DELAY_LEVEL_MIN, EP_DELAY_LEVEL_MAX, 0, 127)));
ep_delay_mixer_l.gain(1, midi_volume_transform(map(configuration.fx.ep_delay_level, EP_DELAY_LEVEL_MIN, EP_DELAY_LEVEL_MAX, 0, 127)));
ep_delay_fb_mixer_r.gain(0, 1.0);
ep_delay_fb_mixer_r.gain(0, 1.0);
ep_delay_fb_mixer_l.gain(1, midi_volume_transform(map(configuration.fx.ep_delay_feedback, EP_DELAY_FEEDBACK_MIN, EP_DELAY_FEEDBACK_MAX, 0, 127)));
ep_delay_fb_mixer_l.gain(1, midi_volume_transform(map(configuration.fx.ep_delay_feedback, EP_DELAY_FEEDBACK_MIN, EP_DELAY_FEEDBACK_MAX, 0, 127)));
#else
master_mixer_r.gain(3, 1.0);
master_mixer_l.gain(3, 1.0);
#endif
// Setup effects
#if defined(USE_FX)
for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)

35
UI.hpp
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@ -96,17 +96,22 @@ extern AudioControlSGTL5000 sgtl5000;
#if defined(USE_FX)
extern AudioSynthWaveform* chorus_modulator[NUM_DEXED];
extern AudioEffectModulatedDelay* modchorus[NUM_DEXED];
extern AudioMixer<4>* chorus_mixer[NUM_DEXED];
extern AudioMixer<4>* delay_fb_mixer[NUM_DEXED];
extern AudioMixer<2>* chorus_mixer[NUM_DEXED];
extern AudioMixer<2>* delay_fb_mixer[NUM_DEXED];
extern AudioEffectDelay* delay_fx[NUM_DEXED];
extern AudioMixer<4>* delay_mixer[NUM_DEXED];
extern AudioMixer<2>* delay_mixer[NUM_DEXED];
#endif
extern AudioEffectMonoStereo* mono2stereo[NUM_DEXED];
extern AudioMixer<4> microdexed_peak_mixer;
extern AudioMixer<2> microdexed_peak_mixer;
extern AudioAnalyzePeak microdexed_peak;
#if defined(USE_FX)
extern AudioMixer<4> reverb_mixer_r;
extern AudioMixer<4> reverb_mixer_l;
#if defined(USE_EPIANO)
extern AudioMixer<4> reverb_mixer_r;
extern AudioMixer<4> reverb_mixer_l;
#else
extern AudioMixer<3> reverb_mixer_r;
extern AudioMixer<3> reverb_mixer_l;
#endif
#if defined(USE_PLATEREVERB)
extern AudioEffectPlateReverb reverb;
#elif defined(USE_FREEVERB_SIMD)
@ -115,6 +120,24 @@ extern AudioEffectFreeverbSIMDStereo freeverb;
extern AudioEffectFreeverbStereoFloat freeverb;
#endif
#endif
#if defined(USE_FX) && defined(USE_EPIANO)
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 AudioMixer<2> ep_chorus_mixer_r;
extern AudioMixer<2> ep_chorus_mixer_l;
extern AudioMixer<2> ep_delay_fb_mixer_r;
extern AudioMixer<2> ep_delay_fb_mixer_l;
extern AudioEffectDelay ep_delay_fx_r;
extern AudioEffectDelay ep_delay_fx_l;
extern AudioMixer<2> ep_delay_mixer_r;
extern AudioMixer<2> ep_delay_mixer_l;
#endif
extern AudioMixer<4> master_mixer_r;
extern AudioMixer<4> master_mixer_l;
extern AudioEffectStereoMono stereo2mono;

8
config.h
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@ -96,7 +96,7 @@
#define SHOW_CPU_LOAD_MSEC 5000
//*************************************************************************************************
//* DEXED SEQEUNCER AND EFFECTS SETTINGS
//* DEXED SEQUENCER, EPIANO AND EFFECTS SETTINGS
//*************************************************************************************************
// Number of Dexed instances
#if defined(TEENSY3_6)
@ -134,6 +134,12 @@
#define USE_SEQUENCER
#endif
// EPIANO
#define USE_EPIANO
#ifdef USE_EPIANO
#define NUM_EPIANO_VOICES 16
#endif
// CHORUS parameters
#define MOD_DELAY_SAMPLE_BUFFER int32_t(TIME_MS2SAMPLES(20.0)) // 20.0 ms delay buffer.
#define MOD_WAVEFORM WAVEFORM_TRIANGLE // WAVEFORM_SINE WAVEFORM_TRIANGLE WAVEFORM_SAWTOOTH WAVEFORM_SAWTOOTH_REVERSE

128
third-party/Synth_MDA_EPiano/.gitignore vendored
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@ -0,0 +1,128 @@
# ---> C++
# Prerequisites
*.d
# Compiled Object files
*.slo
*.lo
*.o
*.obj
# Precompiled Headers
*.gch
*.pch
# Compiled Dynamic libraries
*.so
*.dylib
*.dll
# Fortran module files
*.mod
*.smod
# Compiled Static libraries
*.lai
*.la
*.a
*.lib
# Executables
*.exe
*.out
*.app
# ---> C
# Prerequisites
*.d
# Object files
*.o
*.ko
*.obj
*.elf
# Linker output
*.ilk
*.map
*.exp
# Precompiled Headers
*.gch
*.pch
# Libraries
*.lib
*.a
*.la
*.lo
# Shared objects (inc. Windows DLLs)
*.dll
*.so
*.so.*
*.dylib
# Executables
*.exe
*.out
*.app
*.i*86
*.x86_64
*.hex
# Debug files
*.dSYM/
*.su
*.idb
*.pdb
# Kernel Module Compile Results
*.mod*
*.cmd
.tmp_versions/
modules.order
Module.symvers
Mkfile.old
dkms.conf
# ---> Vim
# Swap
[._]*.s[a-v][a-z]
!*.svg # comment out if you don't need vector files
[._]*.sw[a-p]
[._]s[a-rt-v][a-z]
[._]ss[a-gi-z]
[._]sw[a-p]
# Session
Session.vim
Sessionx.vim
# Temporary
.netrwhist
*~
# Auto-generated tag files
tags
# Persistent undo
[._]*.un~
# ---> LabVIEW
# Libraries
*.lvlibp
*.llb
# Shared objects (inc. Windows DLLs)
*.dll
*.so
*.so.*
*.dylib
# Executables
*.exe
# Metadata
*.aliases
*.lvlps
.cache/

674
third-party/Synth_MDA_EPiano/LICENSE-GPL3.txt vendored
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@ -0,0 +1,674 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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The licenses for most software and other practical works are designed
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third-party/Synth_MDA_EPiano/README.md vendored
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# Synth_MDA_EPiano
EPiano synth (port of MDAEPiano) Teensy audio library
This library is the extraction of the MDA-EPiano sound engine from https://sourceforge.net/projects/mda-vst/
## API:
void noteOn(int32_t note, int32_t velocity);
void noteOff(int32_t note);
bool processMidiController(uint8_t data1, uint8_t data2);
void setProgram(uint8_t program);
void resumeVoices();
void resetVoices(void);
void resetControllers(void);
void stopVoices(void);
void setDecay(float value);
float getDecay(void);
void setRelease(float value);
float getRelease(void);
void setHardness(float value);
float getHardness(void);
void setTreble(float value);
float getTreble(void);
void setPanTremolo(float value);
float getPanTremolo(void);
void setPanLFO(float value);
float getPanLFO(void);
void setVelocitySense(float value);
float getVelocitySense(void);
void setStereo(float value);
float getStereo(void);
void setPolyphony(uint8_t value);
uint8_t getPolyphony(void);
void setTune(float value);
float getTune(void);
void setDetune(float value);
float getDetune(void);
void setOverdrive(float value);
float getOverdrive(void);
void setVolume(float value);
float getVolume(void);
int32_t getActiveVoices(void);

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third-party/Synth_MDA_EPiano/examples/MDA_EP_SimplePlay/MDA_EP_SimplePlay.ino vendored
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#include <Audio.h>
#include "synth_mda_epiano.h"
AudioSynthEPiano ep(16);
AudioOutputI2S i2s1;
AudioControlSGTL5000 sgtl5000_1;
AudioConnection patchCord1(ep, 0, i2s1, 0);
AudioConnection patchCord2(ep, 0, i2s1, 1);
void setup()
{
AudioMemory(32);
sgtl5000_1.enable();
sgtl5000_1.lineOutLevel(29);
sgtl5000_1.dacVolumeRamp();
sgtl5000_1.dacVolume(1.0);
sgtl5000_1.unmuteHeadphone();
sgtl5000_1.unmuteLineout();
sgtl5000_1.volume(0.8, 0.8); // Headphone volume
}
void loop()
{
uint8_t x=random(11);
int8_t d=random(60)-30;
uint8_t p=random(7);
ep.setProgram(p);
Serial.println("Key-Down");
ep.noteOn(48+x, 90+d);
delay(100);
ep.noteOn(52+x, 90+d);
delay(100);
ep.noteOn(55+x, 90+d);
delay(100);
ep.noteOn(60+x, 90+d);
delay(2000);
Serial.println("Key-Up");
ep.noteOff(48+x);
ep.noteOff(52+x);
ep.noteOff(55+x);
ep.noteOff(60+x);
delay(2000);
}

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third-party/Synth_MDA_EPiano/library.properties vendored
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name=Synth_MDA_EPiano
version=1.0
author=Holger Wirtz
maintainer= <wirtz@parasitstudio.de>
sentence=EPiano synth (port of MDAEPiano) Teensy audio library
paragraph=This library is the extraction of the MDA-EPiano sound engine from https://sourceforge.net/projects/mda-vst/
category=Audio
url=https://www.parasitstudio.de
architectures=teensy,avr
license=GPL3

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third-party/Synth_MDA_EPiano/src/mdaEPiano.cpp vendored
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/*
MicroMDAEPiano
MicroMDAEPiano is a port of the MDA-EPiano sound engine
(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "synth_mda_epiano.h"
#ifdef USE_XFADE_DATA
#include "mdaEPianoDataXfade.h"
#else
#include "mdaEPianoData.h"
#endif
#include "mdaEPiano.h"
#include <stdio.h>
#include <math.h>
mdaEPiano::mdaEPiano(uint8_t nvoices) // mdaEPiano::mdaEPiano(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, NPROGS, NPARAMS)
{
Fs = AUDIO_SAMPLE_RATE; iFs = 1.0f / Fs; //just in case...
max_polyphony=nvoices;
voice=new VOICE[max_polyphony];
uint8_t i=0;
programs = new mdaEPianoProgram[NPROGS];
fillpatch(i++, "Default", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "Bright", 0.500f, 0.500f, 1.000f, 0.800f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.146f, 0.500f);
fillpatch(i++, "Mellow", 0.500f, 0.500f, 0.000f, 0.000f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "Autopan", 0.500f, 0.500f, 0.500f, 0.500f, 0.250f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "Tremolo", 0.500f, 0.500f, 0.500f, 0.500f, 0.750f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 1.0f, 0.500f, 0.146f, 0.000f);
setDecay(0.500f);
setRelease(0.500f);
setHardness(0.500f);
setTreble(0.500f);
setPanTremolo(0.500f);
setPanLFO(0.650f);
setVelocitySense(0.250f);
setStereo(0.500f);
setPolyphony(nvoices);
setTune(0.500f);
setDetune(0.146f);
setOverdrive(0.000f);
setVolume(0.64616f);
waves = (short*)epianoDataXfade;
//Waveform data and keymapping
kgrp[ 0].root = 36; kgrp[ 0].high = 39; //C1
kgrp[ 3].root = 43; kgrp[ 3].high = 45; //G1
kgrp[ 6].root = 48; kgrp[ 6].high = 51; //C2
kgrp[ 9].root = 55; kgrp[ 9].high = 57; //G2
kgrp[12].root = 60; kgrp[12].high = 63; //C3
kgrp[15].root = 67; kgrp[15].high = 69; //G3
kgrp[18].root = 72; kgrp[18].high = 75; //C4
kgrp[21].root = 79; kgrp[21].high = 81; //G4
kgrp[24].root = 84; kgrp[24].high = 87; //C5
kgrp[27].root = 91; kgrp[27].high = 93; //G5
kgrp[30].root = 96; kgrp[30].high = 999; //C6
kgrp[0].pos = 0; kgrp[0].end = 8476; kgrp[0].loop = 4400;
kgrp[1].pos = 8477; kgrp[1].end = 16248; kgrp[1].loop = 4903;
kgrp[2].pos = 16249; kgrp[2].end = 34565; kgrp[2].loop = 6398;
kgrp[3].pos = 34566; kgrp[3].end = 41384; kgrp[3].loop = 3938;
kgrp[4].pos = 41385; kgrp[4].end = 45760; kgrp[4].loop = 1633; //was 1636;
kgrp[5].pos = 45761; kgrp[5].end = 65211; kgrp[5].loop = 5245;
kgrp[6].pos = 65212; kgrp[6].end = 72897; kgrp[6].loop = 2937;
kgrp[7].pos = 72898; kgrp[7].end = 78626; kgrp[7].loop = 2203; //was 2204;
kgrp[8].pos = 78627; kgrp[8].end = 100387; kgrp[8].loop = 6368;
kgrp[9].pos = 100388; kgrp[9].end = 116297; kgrp[9].loop = 10452;
kgrp[10].pos = 116298; kgrp[10].end = 127661; kgrp[10].loop = 5217; //was 5220;
kgrp[11].pos = 127662; kgrp[11].end = 144113; kgrp[11].loop = 3099;
kgrp[12].pos = 144114; kgrp[12].end = 152863; kgrp[12].loop = 4284;
kgrp[13].pos = 152864; kgrp[13].end = 173107; kgrp[13].loop = 3916;
kgrp[14].pos = 173108; kgrp[14].end = 192734; kgrp[14].loop = 2937;
kgrp[15].pos = 192735; kgrp[15].end = 204598; kgrp[15].loop = 4732;
kgrp[16].pos = 204599; kgrp[16].end = 218995; kgrp[16].loop = 4733;
kgrp[17].pos = 218996; kgrp[17].end = 233801; kgrp[17].loop = 2285;
kgrp[18].pos = 233802; kgrp[18].end = 248011; kgrp[18].loop = 4098;
kgrp[19].pos = 248012; kgrp[19].end = 265287; kgrp[19].loop = 4099;
kgrp[20].pos = 265288; kgrp[20].end = 282255; kgrp[20].loop = 3609;
kgrp[21].pos = 282256; kgrp[21].end = 293776; kgrp[21].loop = 2446;
kgrp[22].pos = 293777; kgrp[22].end = 312566; kgrp[22].loop = 6278;
kgrp[23].pos = 312567; kgrp[23].end = 330200; kgrp[23].loop = 2283;
kgrp[24].pos = 330201; kgrp[24].end = 348889; kgrp[24].loop = 2689;
kgrp[25].pos = 348890; kgrp[25].end = 365675; kgrp[25].loop = 4370;
kgrp[26].pos = 365676; kgrp[26].end = 383661; kgrp[26].loop = 5225;
kgrp[27].pos = 383662; kgrp[27].end = 393372; kgrp[27].loop = 2811;
kgrp[28].pos = 383662; kgrp[28].end = 393372; kgrp[28].loop = 2811; //ghost
kgrp[29].pos = 393373; kgrp[29].end = 406045; kgrp[29].loop = 4522;
kgrp[30].pos = 406046; kgrp[30].end = 414486; kgrp[30].loop = 2306;
kgrp[31].pos = 406046; kgrp[31].end = 414486; kgrp[31].loop = 2306; //ghost
kgrp[32].pos = 414487; kgrp[32].end = 422408; kgrp[32].loop = 2169;
//initialise...
resetVoices();
}
void mdaEPiano::fillpatch(int32_t p, char *name, float p0, float p1, float p2, float p3, float p4, float p5, float p6, float p7, float p8, float p9, float p10,float p11)
{
strcpy(programs[p].name, name);
programs[p].param[0] = p0; programs[p].param[1] = p1;
programs[p].param[2] = p2; programs[p].param[3] = p3;
programs[p].param[4] = p4; programs[p].param[5] = p5;
programs[p].param[6] = p6; programs[p].param[7] = p7;
programs[p].param[8] = p8; programs[p].param[9] = p9;
programs[p].param[10]= p10; programs[p].param[11] = p11;
}
void mdaEPiano::resetVoices(void) // reset all voices
{
for (int32_t v = 0; v < max_polyphony; v++)
{
voice[v].env = 0.0f;
voice[v].dec = 0.99f; //all notes off
}
//volume = // 0.00002f * 127; // Fixing this level and using CC#7 as master_volume
muff = 160.0f;
sustain = activevoices = 0;
tl = tr = lfo0 = dlfo = 0.0f;
lfo1 = 1.0f;
update();
}
void mdaEPiano::resetControllers(void) // reset controllers
{
tl = tr = lfo0 = dlfo = 0.0f;
lfo1 = 1.0f;
update();
}
void mdaEPiano::stopVoices(void) // all keys off, but no reset for sustain
{
for (int32_t v = 0; v < max_polyphony; v++)
{
voice[v].env = 0.0f;
}
muff = 160.0f;
activevoices = 0;
update();
}
void mdaEPiano::update() //parameter change
{
float * param = programs[curProgram].param;
size = (int32_t)(12.0f * param[2] - 6.0f);
treb = 4.0f * param[3] * param[3] - 1.0f; //treble gain
if (param[3] > 0.5f) tfrq = 14000.0f; else tfrq = 5000.0f; //treble freq
tfrq = 1.0f - (float)exp(-iFs * tfrq);
rmod = lmod = param[4] + param[4] - 1.0f; //lfo depth
if (param[4] < 0.5f) rmod = -rmod;
dlfo = 6.283f * iFs * (float)exp(6.22f * param[5] - 2.61f); //lfo rate
velsens = 1.0f + param[6] + param[6];
if (param[6] < 0.25f) velsens -= 0.75f - 3.0f * param[6];
width = 0.03f * param[7];
fine = param[9] - 0.5f;
random = 0.077f * param[10] * param[10];
stretch = 0.0f; //0.000434f * (param[11] - 0.5f); parameter re-used for overdrive!
overdrive = 1.8f * param[11];
}
void mdaEPiano::resumeVoices()
{
Fs = AUDIO_SAMPLE_RATE;
iFs = 1.0f / Fs;
dlfo = 6.283f * iFs * (float)exp(6.22f * programs[ 0].param[5] - 2.61f); //lfo rate
}
mdaEPiano::~mdaEPiano () //destroy any buffers...
{
if (programs) delete [] programs;
}
void mdaEPiano::setDecay(float value)
{
setParameter(MDA_EP_DECAY, value);
}
float mdaEPiano::getDecay(void)
{
return(getParameter(MDA_EP_DECAY));
}
void mdaEPiano::setRelease(float value)
{
setParameter(MDA_EP_RELEASE, value);
}
float mdaEPiano::getRelease(void)
{
return(getParameter(MDA_EP_RELEASE));
}
void mdaEPiano::setHardness(float value)
{
setParameter(MDA_EP_HARDNESS, value);
}
float mdaEPiano::getHardness(void)
{
return(getParameter(MDA_EP_HARDNESS));
}
void mdaEPiano::setTreble(float value)
{
setParameter(MDA_EP_TREBLE, value);
}
float mdaEPiano::getTreble(void)
{
return(getParameter(MDA_EP_TREBLE));
}
void mdaEPiano::setPanTremolo(float value)
{
setParameter(MDA_EP_PAN_TREM, value);
}
float mdaEPiano::getPanTremolo(void)
{
return(getParameter(MDA_EP_PAN_TREM));
}
void mdaEPiano::setPanLFO(float value)
{
setParameter(MDA_EP_LFO_RATE, value);
}
float mdaEPiano::getPanLFO(void)
{
return(getParameter(MDA_EP_LFO_RATE));
}
void mdaEPiano::setVelocitySense(float value)
{
setParameter(MDA_EP_VELOCITY_SENSE, value);
}
float mdaEPiano::getVelocitySense(void)
{
return(getParameter(MDA_EP_VELOCITY_SENSE));
}
void mdaEPiano::setStereo(float value)
{
setParameter(MDA_EP_STEREO, value);
}
float mdaEPiano::getStereo(void)
{
return(getParameter(MDA_EP_STEREO));
}
void mdaEPiano::setPolyphony(uint8_t value)
{
if (value <= 0)
value = 1;
if(voice)
delete(voice);
voice=new VOICE[value];
max_polyphony = value;
}
uint8_t mdaEPiano::getPolyphony(void)
{
return(max_polyphony);
}
void mdaEPiano::setTune(float value)
{
setParameter(MDA_EP_TUNE, value);
}
float mdaEPiano::getTune(void)
{
return(getParameter(MDA_EP_TUNE));
}
void mdaEPiano::setDetune(float value)
{
setParameter(MDA_EP_DETUNE, value);
}
float mdaEPiano::getDetune(void)
{
return(getParameter(MDA_EP_DETUNE));
}
void mdaEPiano::setOverdrive(float value)
{
setParameter(MDA_EP_OVERDRIVE, value);
}
float mdaEPiano::getOverdrive(void)
{
return(getParameter(MDA_EP_OVERDRIVE));
}
void mdaEPiano::setVolume(float value)
{
//volume = value * 0.32258; // 0.00002 * 127^2
volume = value * 0.16f;
}
float mdaEPiano::getVolume(void)
{
return(volume/0.16f);
}
void mdaEPiano::setParameter(int32_t index, float value)
{
programs[0].param[index] = value;
update();
}
float mdaEPiano::getParameter(int32_t index)
{
return(programs[0].param[index]);
}
int32_t mdaEPiano::getActiveVoices(void)
{
return (activevoices);
}
void mdaEPiano::process(int16_t* outputs_r, int16_t* outputs_l)
{
int16_t v;
float x, l, r, od = overdrive;
int32_t i;
int16_t frame;
for (frame = 0; frame < AUDIO_BLOCK_SAMPLES; frame++)
{
VOICE *V = voice;
l = r = 0.0f;
for (v = 0; v < activevoices; v++)
{
V->frac += V->delta; //integer-based linear interpolation
V->pos += V->frac >> 16;
V->frac &= 0xFFFF;
if (V->pos > V->end)
V->pos -= V->loop;
i = waves[V->pos] + ((V->frac * (waves[V->pos + 1] - waves[V->pos])) >> 16);
x = V->env * static_cast<float>(i) / 32768.0f;
V->env = V->env * V->dec; //envelope
if (x > 0.0f)
{
x -= od * x * x; //overdrive
if (x < -V->env) x = -V->env;
}
l += V->outl * x;
r += V->outr * x;
V++;
}
tl += tfrq * (l - tl); //treble boost
tr += tfrq * (r - tr);
r += treb * (r - tr);
l += treb * (l - tl);
lfo0 += dlfo * lfo1; //LFO for tremolo and autopan
lfo1 -= dlfo * lfo0;
l += l * lmod * lfo1;
r += r * rmod * lfo1; //worth making all these local variables?
r *= 0.5;
l *= 0.5;
if (r > 1.0)
r = 1.0;
else if (r < -1.0)
r = -1.0;
if (l > 1.0)
l = 1.0;
else if (l < -1.0)
l = -1.0;
outputs_l[frame] = static_cast<int16_t>(l * 0x7fff);
outputs_r[frame] = static_cast<int16_t>(r * 0x7fff);
}
if (fabs(tl) < 1.0e-10) tl = 0.0f; //anti-denormal
if (fabs(tr) < 1.0e-10) tr = 0.0f;
for (v = 0; v < activevoices; v++)
if (voice[v].env < SILENCE)
voice[v] = voice[--activevoices];
}
void mdaEPiano::noteOn(int32_t note, int32_t velocity)
{
float * param = programs[ 0].param;
float l = 99.0f;
int32_t v, vl = 0, k, s;
if (velocity > 0)
{
if (activevoices < max_polyphony) //add a note
{
vl = activevoices;
activevoices++;
voice[vl].f0 = voice[vl].f1 = 0.0f;
}
else //steal a note
{
for (v = 0; v < max_polyphony; v++) //find quietest voice
{
if (voice[v].env < l) {
l = voice[v].env;
vl = v;
}
}
}
k = (note - 60) * (note - 60);
l = fine + random * ((float)(k % 13) - 6.5f); //random & fine tune
if (note > 60) l += stretch * (float)k; //stretch
s = size;
//if(velocity > 40) s += (int32_t)(sizevel * (float)(velocity - 40)); - no velocity to hardness in ePiano
k = 0;
while (note > (kgrp[k].high + s)) k += 3; //find keygroup
l += (float)(note - kgrp[k].root); //pitch
l = 32000.0f * iFs * (float)exp(0.05776226505 * l);
voice[vl].delta = (int32_t)(65536.0f * l);
voice[vl].frac = 0;
if (velocity > 48) k++; //mid velocity sample
if (velocity > 80) k++; //high velocity sample
voice[vl].pos = kgrp[k].pos;
voice[vl].end = kgrp[k].end - 1;
voice[vl].loop = kgrp[k].loop;
voice[vl].env = (3.0f + 2.0f * velsens) * (float)pow(0.0078f * velocity, velsens); //velocity
if (note > 60) voice[vl].env *= (float)exp(0.01f * (float)(60 - note)); //new! high notes quieter
l = 50.0f + param[4] * param[4] * muff + muffvel * (float)(velocity - 64); //muffle
if (l < (55.0f + 0.4f * (float)note)) l = 55.0f + 0.4f * (float)note;
if (l > 210.0f) l = 210.0f;
voice[vl].ff = l * l * iFs;
voice[vl].note = note; //note->pan
if (note < 12) note = 12;
if (note > 108) note = 108;
l = volume;
voice[vl].outr = l + l * width * (float)(note - 60);
voice[vl].outl = l + l - voice[vl].outr;
if (note < 44) note = 44; //limit max decay length
voice[vl].dec = (float)exp(-iFs * exp(-1.0 + 0.03 * (double)note - 2.0f * param[0]));
}
else //note off
{
for (v = 0; v < max_polyphony; v++) if (voice[v].note == note) //any voices playing that note?
{
if (sustain == 0)
{
voice[v].dec = (float)exp(-iFs * exp(6.0 + 0.01 * (double)note - 5.0 * param[1]));
}
else voice[v].note = SUSTAIN;
}
}
}
void mdaEPiano::noteOff(int32_t note)
{
noteOn(note,0);
}
bool mdaEPiano::processMidiController(uint8_t data1, uint8_t data2)
{
float* param = programs[ 0].param;
switch (data1)
{
case 0x01: //mod wheel
modwhl = 0.0078f * (float)(data2);
if (modwhl > 0.05f) //over-ride pan/trem depth
{
rmod = lmod = modwhl; //lfo depth
if (param[4] < 0.5f) rmod = -rmod;
}
break;
case 0x07: //volume
//set_master_volume(map(data2, 0, 127, ENC_MASTER_VOLUME_MIN, ENC_MASTER_VOLUME_MAX));
break;
case 0x40: //sustain pedal
case 0x42: //sustenuto pedal
sustain = data2 & 0x40;
if (sustain == 0)
{
noteOn(SUSTAIN, 0); //end all sustained notes
}
break;
case 0x78: // All Sound Off: mutes all sounding notes. It does so regardless of release time or sustain. (See MIDI CC 123)
resetVoices();
break;
case 0x79: // Reset All Controllers: it will reset all controllers to their default.
resetControllers();
break;
case 0x7b: // All Notes Off: mutes all sounding notes. Release time will still be maintained, and notes held by sustain will not turn off until sustain pedal is depressed.
stopVoices();
break;
case 0x7e: // Mono Mode: sets device mode to Monophonic.
setPolyphony(1);
break;
case 0x7f: // Poly Mode: sets device mode to Polyphonic.
setPolyphony(max_polyphony);
break;
}
return (true);
}
void mdaEPiano::setProgram(uint8_t program)
{
curProgram = program;
update();
}

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third-party/Synth_MDA_EPiano/src/mdaEPiano.h vendored
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/*
MicroMDAEPiano
MicroMDAEPiano is a port of the MDA-EPiano sound engine
(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __mdaEPiano__
#define __mdaEPiano__
#include <Audio.h>
#include <Arduino.h>
#include <string.h>
#include "synth_mda_epiano.h"
#define NPARAMS 12 //number of parameters
#define NPROGS 8 //number of programs
#define NOUTS 2 //number of outputs
#define SUSTAIN 128
#define SILENCE 0.0001f //voice choking
#define WAVELEN 422414 //wave data bytes
// MDAEPiano parameter mapping
#define MDA_EP_DECAY 0
#define MDA_EP_RELEASE 1
#define MDA_EP_HARDNESS 2
#define MDA_EP_TREBLE 3
#define MDA_EP_PAN_TREM 4
#define MDA_EP_LFO_RATE 5
#define MDA_EP_VELOCITY_SENSE 6
#define MDA_EP_STEREO 7
#define MDA_EP_MAX_POLY 8
#define MDA_EP_TUNE 9
#define MDA_EP_DETUNE 10
#define MDA_EP_OVERDRIVE 11
class mdaEPianoProgram
{
friend class mdaEPiano;
private:
float param[NPARAMS];
char name[24];
};
struct VOICE //voice state
{
int32_t delta; //sample playback
int32_t frac;
int32_t pos;
int32_t end;
int32_t loop;
float env; //envelope
float dec;
float f0; //first-order LPF
float f1;
float ff;
float outl;
float outr;
int32_t note; //remember what note triggered this
};
struct KGRP //keygroup
{
int32_t root; //MIDI root note
int32_t high; //highest note
int32_t pos;
int32_t end;
int32_t loop;
};
class mdaEPiano
{
public:
mdaEPiano(uint8_t nvoices);
~mdaEPiano();
void noteOn(int32_t note, int32_t velocity);
void noteOff(int32_t note);
bool processMidiController(uint8_t data1, uint8_t data2);
void setProgram(uint8_t program);
void resumeVoices();
void resetVoices(void);
void resetControllers(void);
void stopVoices(void);
void setDecay(float value);
float getDecay(void);
void setRelease(float value);
float getRelease(void);
void setHardness(float value);
float getHardness(void);
void setTreble(float value);
float getTreble(void);
void setPanTremolo(float value);
float getPanTremolo(void);
void setPanLFO(float value);
float getPanLFO(void);
void setVelocitySense(float value);
float getVelocitySense(void);
void setStereo(float value);
float getStereo(void);
void setPolyphony(uint8_t value);
uint8_t getPolyphony(void);
void setTune(float value);
float getTune(void);
void setDetune(float value);
float getDetune(void);
void setOverdrive(float value);
float getOverdrive(void);
void setVolume(float value);
float getVolume(void);
int32_t getActiveVoices(void);
protected:
void process(int16_t *outputs_r, int16_t *outputs_l);
void update();
void fillpatch(int32_t p, char *name, float p0, float p1, float p2, float p3, float p4,
float p5, float p6, float p7, float p8, float p9, float p10, float p11);
void setParameter(int32_t index, float value);
float getParameter(int32_t index);
mdaEPianoProgram* programs;
float Fs, iFs;
///global internal variables
uint8_t max_polyphony;
KGRP kgrp[34];
VOICE* voice;
int32_t activevoices;
short *waves;
float width;
int32_t size, sustain;
float lfo0, lfo1, dlfo, lmod, rmod;
float treb, tfrq, tl, tr;
float tune, fine, random, stretch, overdrive;
float muff, muffvel, sizevel, velsens, modwhl;
float volume;
float vol;
uint8_t curProgram;
};
#endif

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third-party/Synth_MDA_EPiano/src/synth_epiano.h vendored
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#pragma once
#define USE_XFADE_DATA 1 // TODO
#include <Audio.h>
#include <AudioStream.h>
#include "mdaEPiano.h"
class AudioSynthEPiano : public AudioStream, public mdaEPiano {
public:
const uint16_t audio_block_time_us = 1000000 / (AUDIO_SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
uint32_t xrun = 0;
uint16_t render_time_max = 0;
AudioSynthEPiano(uint8_t nvoices) : AudioStream(0, NULL), mdaEPiano(nvoices) { };
void update(void)
{
if (in_update == true)
{
xrun++;
return;
}
else
in_update = true;
elapsedMicros render_time;
audio_block_t *lblock;
audio_block_t *rblock;
lblock = allocate();
rblock = allocate();
if (!lblock || !rblock)
{
in_update = false;
return;
}
mdaEPiano::process(rblock->data, lblock->data);
if (render_time > audio_block_time_us) // everything greater audio_block_time_us (2.9ms for buffer size of 128) is a buffer underrun!
xrun++;
if (render_time > render_time_max)
render_time_max = render_time;
transmit(lblock, 0);
transmit(rblock, 1);
release(lblock);
release(rblock);
in_update = false;
};
private:
volatile bool in_update = false;
};

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#pragma once
#define USE_XFADE_DATA 1 // TODO
#include <Audio.h>
#include <AudioStream.h>
#include "mdaEPiano.h"
class AudioSynthEPiano : public AudioStream, public mdaEPiano {
public:
const uint16_t audio_block_time_us = 1000000 / (AUDIO_SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
uint32_t xrun = 0;
uint16_t render_time_max = 0;
AudioSynthEPiano(uint8_t nvoices) : AudioStream(0, NULL), mdaEPiano(nvoices) { };
void update(void)
{
if (in_update == true)
{
xrun++;
return;
}
else
in_update = true;
elapsedMicros render_time;
audio_block_t *lblock;
audio_block_t *rblock;
lblock = allocate();
rblock = allocate();
if (!lblock || !rblock)
{
in_update = false;
return;
}
mdaEPiano::process(rblock->data, lblock->data);
if (render_time > audio_block_time_us) // everything greater audio_block_time_us (2.9ms for buffer size of 128) is a buffer underrun!
xrun++;
if (render_time > render_time_max)
render_time_max = render_time;
transmit(lblock, 0);
transmit(rblock, 1);
release(lblock);
release(rblock);
in_update = false;
};
private:
volatile bool in_update = false;
};

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third-party/Synth_MDA_EPiano/utility/gen_xfade.sh vendored
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#!/bin/bash
sed -e 's/^.\+Arduino\.h.\+$/#include <stdint.h>/' ../mdaEPianoData.h >mdaEPianoData.h
sed -i 's/PROGMEM//' mdaEPianoData.h
sed -i 's/const//' mdaEPianoData.h
gcc -o xfade_generator xfade_generator.c
rm mdaEPianoData.h
./xfade_generator >../mdaEPianoDataXfade.h
rm xfade_generator

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third-party/Synth_MDA_EPiano/utility/xfade_generator.c vendored
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#include "mdaEPianoData.h"
#include <stdio.h>
#include <math.h>
#include <stdint.h>
struct KGRP //keygroup
{
int32_t root; //MIDI root note
int32_t high; //highest note
int32_t pos;
int32_t end;
int32_t loop;
};
void main(void)
{
struct KGRP kgrp[34];
int16_t *waves = (int16_t*)epianoData;
//Waveform data and keymapping
kgrp[ 0].root = 36; kgrp[ 0].high = 39; //C1
kgrp[ 3].root = 43; kgrp[ 3].high = 45; //G1
kgrp[ 6].root = 48; kgrp[ 6].high = 51; //C2
kgrp[ 9].root = 55; kgrp[ 9].high = 57; //G2
kgrp[12].root = 60; kgrp[12].high = 63; //C3
kgrp[15].root = 67; kgrp[15].high = 69; //G3
kgrp[18].root = 72; kgrp[18].high = 75; //C4
kgrp[21].root = 79; kgrp[21].high = 81; //G4
kgrp[24].root = 84; kgrp[24].high = 87; //C5
kgrp[27].root = 91; kgrp[27].high = 93; //G5
kgrp[30].root = 96; kgrp[30].high = 999; //C6
kgrp[0].pos = 0; kgrp[0].end = 8476; kgrp[0].loop = 4400;
kgrp[1].pos = 8477; kgrp[1].end = 16248; kgrp[1].loop = 4903;
kgrp[2].pos = 16249; kgrp[2].end = 34565; kgrp[2].loop = 6398;
kgrp[3].pos = 34566; kgrp[3].end = 41384; kgrp[3].loop = 3938;
kgrp[4].pos = 41385; kgrp[4].end = 45760; kgrp[4].loop = 1633; //was 1636;
kgrp[5].pos = 45761; kgrp[5].end = 65211; kgrp[5].loop = 5245;
kgrp[6].pos = 65212; kgrp[6].end = 72897; kgrp[6].loop = 2937;
kgrp[7].pos = 72898; kgrp[7].end = 78626; kgrp[7].loop = 2203; //was 2204;
kgrp[8].pos = 78627; kgrp[8].end = 100387; kgrp[8].loop = 6368;
kgrp[9].pos = 100388; kgrp[9].end = 116297; kgrp[9].loop = 10452;
kgrp[10].pos = 116298; kgrp[10].end = 127661; kgrp[10].loop = 5217; //was 5220;
kgrp[11].pos = 127662; kgrp[11].end = 144113; kgrp[11].loop = 3099;
kgrp[12].pos = 144114; kgrp[12].end = 152863; kgrp[12].loop = 4284;
kgrp[13].pos = 152864; kgrp[13].end = 173107; kgrp[13].loop = 3916;
kgrp[14].pos = 173108; kgrp[14].end = 192734; kgrp[14].loop = 2937;
kgrp[15].pos = 192735; kgrp[15].end = 204598; kgrp[15].loop = 4732;
kgrp[16].pos = 204599; kgrp[16].end = 218995; kgrp[16].loop = 4733;
kgrp[17].pos = 218996; kgrp[17].end = 233801; kgrp[17].loop = 2285;
kgrp[18].pos = 233802; kgrp[18].end = 248011; kgrp[18].loop = 4098;
kgrp[19].pos = 248012; kgrp[19].end = 265287; kgrp[19].loop = 4099;
kgrp[20].pos = 265288; kgrp[20].end = 282255; kgrp[20].loop = 3609;
kgrp[21].pos = 282256; kgrp[21].end = 293776; kgrp[21].loop = 2446;
kgrp[22].pos = 293777; kgrp[22].end = 312566; kgrp[22].loop = 6278;
kgrp[23].pos = 312567; kgrp[23].end = 330200; kgrp[23].loop = 2283;
kgrp[24].pos = 330201; kgrp[24].end = 348889; kgrp[24].loop = 2689;
kgrp[25].pos = 348890; kgrp[25].end = 365675; kgrp[25].loop = 4370;
kgrp[26].pos = 365676; kgrp[26].end = 383661; kgrp[26].loop = 5225;
kgrp[27].pos = 383662; kgrp[27].end = 393372; kgrp[27].loop = 2811;
kgrp[28].pos = 383662; kgrp[28].end = 393372; kgrp[28].loop = 2811; //ghost
kgrp[29].pos = 393373; kgrp[29].end = 406045; kgrp[29].loop = 4522;
kgrp[30].pos = 406046; kgrp[30].end = 414486; kgrp[30].loop = 2306;
kgrp[31].pos = 406046; kgrp[31].end = 414486; kgrp[31].loop = 2306; //ghost
kgrp[32].pos = 414487; kgrp[32].end = 422408; kgrp[32].loop = 2169;
//extra xfade looping...
for (int32_t k = 0; k < 28; k++)
{
int32_t p0 = kgrp[k].end;
int32_t p1 = kgrp[k].end - kgrp[k].loop;
float xf = 1.0f;
float dxf = -0.02f;
while (xf > 0.0f)
{
waves[p0] = (int16_t)((1.0f - xf) * (float)waves[p0] + xf * (float)waves[p1]);
p0--;
p1--;
xf += dxf;
}
}
// output
printf("#include <Arduino.h>\n\n");
printf("const int16_t epianoDataXfade[] PROGMEM = {\n");
for(uint32_t z=0; z<(844836/sizeof(int16_t)); z=z+20)
{
for(uint32_t i=0;i<20;i++)
{
if(z+i>=(uint32_t)(844836/sizeof(int16_t)))
break;
printf("%d,",waves[z+i]);
if(i>=19)
printf("\n");
}
}
printf("\n};\n");
}
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