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restructures audio, begins voicing

This commit is contained in:
Jack Humbert 2016-04-21 00:37:45 -04:00
parent 2e60054951
commit 73228f5e5d
9 changed files with 91 additions and 23 deletions

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quantum/audio/audio.c Normal file
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#include <stdio.h>
#include <string.h>
#include <math.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <avr/io.h>
#include "print.h"
#include "audio.h"
#include "keymap_common.h"
#include "eeconfig.h"
#ifdef VIBRATO_ENABLE
#include "vibrato_lut.h"
#endif
#define PI 3.14159265
#define CPU_PRESCALER 8
#ifdef PWM_AUDIO
#include "wave.h"
#define SAMPLE_DIVIDER 39
#define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048)
// Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
float places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
uint16_t place_int = 0;
bool repeat = true;
#endif
void delay_us(int count) {
while(count--) {
_delay_us(1);
}
}
int voices = 0;
int voice_place = 0;
float frequency = 0;
int volume = 0;
long position = 0;
float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
bool sliding = false;
int max = 0xFF;
float sum = 0;
float place = 0;
uint8_t * sample;
uint16_t sample_length = 0;
// float freq = 0;
bool notes = false;
bool note = false;
float note_frequency = 0;
float note_length = 0;
float note_tempo = TEMPO_DEFAULT;
float note_timbre = TIMBRE_DEFAULT;
uint16_t note_position = 0;
float (* notes_pointer)[][2];
uint16_t notes_count;
bool notes_repeat;
float notes_rest;
bool note_resting = false;
uint8_t current_note = 0;
uint8_t rest_counter = 0;
#ifdef VIBRATO_ENABLE
float vibrato_counter = 0;
float vibrato_strength = .5;
float vibrato_rate = 0.125;
#endif
float polyphony_rate = 0;
bool inited = false;
audio_config_t audio_config;
uint16_t envelope_index = 0;
void audio_toggle(void) {
audio_config.enable ^= 1;
eeconfig_write_audio(audio_config.raw);
}
void audio_on(void) {
audio_config.enable = 1;
eeconfig_write_audio(audio_config.raw);
}
void audio_off(void) {
audio_config.enable = 0;
eeconfig_write_audio(audio_config.raw);
}
#ifdef VIBRATO_ENABLE
// Vibrato rate functions
void set_vibrato_rate(float rate) {
vibrato_rate = rate;
}
void increase_vibrato_rate(float change) {
vibrato_rate *= change;
}
void decrease_vibrato_rate(float change) {
vibrato_rate /= change;
}
#ifdef VIBRATO_STRENGTH_ENABLE
void set_vibrato_strength(float strength) {
vibrato_strength = strength;
}
void increase_vibrato_strength(float change) {
vibrato_strength *= change;
}
void decrease_vibrato_strength(float change) {
vibrato_strength /= change;
}
#endif
#endif
// Polyphony functions
void set_polyphony_rate(float rate) {
polyphony_rate = rate;
}
void enable_polyphony() {
polyphony_rate = 5;
}
void disable_polyphony() {
polyphony_rate = 0;
}
void increase_polyphony_rate(float change) {
polyphony_rate *= change;
}
void decrease_polyphony_rate(float change) {
polyphony_rate /= change;
}
// Timbre function
void set_timbre(float timbre) {
note_timbre = timbre;
}
// Tempo functions
void set_tempo(float tempo) {
note_tempo = tempo;
}
void decrease_tempo(uint8_t tempo_change) {
note_tempo += (float) tempo_change;
}
void increase_tempo(uint8_t tempo_change) {
if (note_tempo - (float) tempo_change < 10) {
note_tempo = 10;
} else {
note_tempo -= (float) tempo_change;
}
}
void audio_init() {
/* check signature */
if (!eeconfig_is_enabled()) {
eeconfig_init();
}
audio_config.raw = eeconfig_read_audio();
#ifdef PWM_AUDIO
PLLFRQ = _BV(PDIV2);
PLLCSR = _BV(PLLE);
while(!(PLLCSR & _BV(PLOCK)));
PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
/* Init a fast PWM on Timer4 */
TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */
OCR4A = 0;
/* Enable the OC4A output */
DDRC |= _BV(PORTC6);
TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
TCCR3A = 0x0; // Options not needed
TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC
OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback
#else
DDRC |= _BV(PORTC6);
TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
#endif
inited = true;
}
void stop_all_notes() {
if (!inited) {
audio_init();
}
voices = 0;
#ifdef PWM_AUDIO
TIMSK3 &= ~_BV(OCIE3A);
#else
TIMSK3 &= ~_BV(OCIE3A);
TCCR3A &= ~_BV(COM3A1);
#endif
notes = false;
note = false;
frequency = 0;
volume = 0;
for (int i = 0; i < 8; i++) {
frequencies[i] = 0;
volumes[i] = 0;
}
}
void stop_note(float freq) {
if (note) {
if (!inited) {
audio_init();
}
#ifdef PWM_AUDIO
freq = freq / SAMPLE_RATE;
#endif
for (int i = 7; i >= 0; i--) {
if (frequencies[i] == freq) {
frequencies[i] = 0;
volumes[i] = 0;
for (int j = i; (j < 7); j++) {
frequencies[j] = frequencies[j+1];
frequencies[j+1] = 0;
volumes[j] = volumes[j+1];
volumes[j+1] = 0;
}
break;
}
}
voices--;
if (voices < 0)
voices = 0;
if (voice_place >= voices) {
voice_place = 0;
}
if (voices == 0) {
#ifdef PWM_AUDIO
TIMSK3 &= ~_BV(OCIE3A);
#else
TIMSK3 &= ~_BV(OCIE3A);
TCCR3A &= ~_BV(COM3A1);
#endif
frequency = 0;
volume = 0;
note = false;
}
}
}
#ifdef VIBRATO_ENABLE
float mod(float a, int b)
{
float r = fmod(a, b);
return r < 0 ? r + b : r;
}
float vibrato(float average_freq) {
#ifdef VIBRATO_STRENGTH_ENABLE
float vibrated_freq = average_freq * pow(VIBRATO_LUT[(int)vibrato_counter], vibrato_strength);
#else
float vibrated_freq = average_freq * VIBRATO_LUT[(int)vibrato_counter];
#endif
vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0/average_freq)), VIBRATO_LUT_LENGTH);
return vibrated_freq;
}
#endif
ISR(TIMER3_COMPA_vect) {
if (note) {
#ifdef PWM_AUDIO
if (voices == 1) {
// SINE
OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
// SQUARE
// if (((int)place) >= 1024){
// OCR4A = 0xFF >> 2;
// } else {
// OCR4A = 0x00;
// }
// SAWTOOTH
// OCR4A = (int)place / 4;
// TRIANGLE
// if (((int)place) >= 1024) {
// OCR4A = (int)place / 2;
// } else {
// OCR4A = 2048 - (int)place / 2;
// }
place += frequency;
if (place >= SINE_LENGTH)
place -= SINE_LENGTH;
} else {
int sum = 0;
for (int i = 0; i < voices; i++) {
// SINE
sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
// SQUARE
// if (((int)places[i]) >= 1024){
// sum += 0xFF >> 2;
// } else {
// sum += 0x00;
// }
places[i] += frequencies[i];
if (places[i] >= SINE_LENGTH)
places[i] -= SINE_LENGTH;
}
OCR4A = sum;
}
#else
if (voices > 0) {
float freq;
if (polyphony_rate > 0) {
if (voices > 1) {
voice_place %= voices;
if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
voice_place = (voice_place + 1) % voices;
place = 0.0;
}
}
#ifdef VIBRATO_ENABLE
if (vibrato_strength > 0) {
freq = vibrato(frequencies[voice_place]);
} else {
#else
{
#endif
freq = frequencies[voice_place];
}
} else {
if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
frequency = frequency * pow(2, 440/frequency/12/2);
} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
frequency = frequency * pow(2, -440/frequency/12/2);
} else {
frequency = frequencies[voices - 1];
}
#ifdef VIBRATO_ENABLE
if (vibrato_strength > 0) {
freq = vibrato(frequency);
} else {
#else
{
#endif
freq = frequency;
}
}
if (envelope_index < 65535) {
envelope_index++;
}
freq = voice_envelope(freq);
if (freq < 30.517578125)
freq = 30.52;
ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
}
#endif
}
// SAMPLE
// OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
// place_int++;
// if (place_int >= sample_length)
// if (repeat)
// place_int -= sample_length;
// else
// TIMSK3 &= ~_BV(OCIE3A);
if (notes) {
#ifdef PWM_AUDIO
OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
place += note_frequency;
if (place >= SINE_LENGTH)
place -= SINE_LENGTH;
#else
if (note_frequency > 0) {
float freq;
#ifdef VIBRATO_ENABLE
if (vibrato_strength > 0) {
freq = vibrato(note_frequency);
} else {
#else
{
#endif
freq = note_frequency;
}
if (envelope_index < 65535) {
envelope_index++;
}
freq = voice_envelope(freq);
ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
} else {
ICR3 = 0;
OCR3A = 0;
}
#endif
note_position++;
bool end_of_note = false;
if (ICR3 > 0)
end_of_note = (note_position >= (note_length / ICR3 * 0xFFFF));
else
end_of_note = (note_position >= (note_length * 0x7FF));
if (end_of_note) {
current_note++;
if (current_note >= notes_count) {
if (notes_repeat) {
current_note = 0;
} else {
#ifdef PWM_AUDIO
TIMSK3 &= ~_BV(OCIE3A);
#else
TIMSK3 &= ~_BV(OCIE3A);
TCCR3A &= ~_BV(COM3A1);
#endif
notes = false;
return;
}
}
if (!note_resting && (notes_rest > 0)) {
note_resting = true;
note_frequency = 0;
note_length = notes_rest;
current_note--;
} else {
note_resting = false;
#ifdef PWM_AUDIO
note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100);
#else
envelope_index = 0;
note_frequency = (*notes_pointer)[current_note][0];
note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100);
#endif
}
note_position = 0;
}
}
if (!audio_config.enable) {
notes = false;
note = false;
}
}
void play_note(float freq, int vol) {
if (!inited) {
audio_init();
}
if (audio_config.enable && voices < 8) {
TIMSK3 &= ~_BV(OCIE3A);
// Cancel notes if notes are playing
if (notes)
stop_all_notes();
note = true;
envelope_index = 0;
#ifdef PWM_AUDIO
freq = freq / SAMPLE_RATE;
#endif
if (freq > 0) {
frequencies[voices] = freq;
volumes[voices] = vol;
voices++;
}
#ifdef PWM_AUDIO
TIMSK3 |= _BV(OCIE3A);
#else
TIMSK3 |= _BV(OCIE3A);
TCCR3A |= _BV(COM3A1);
#endif
}
}
void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) {
if (!inited) {
audio_init();
}
if (audio_config.enable) {
TIMSK3 &= ~_BV(OCIE3A);
// Cancel note if a note is playing
if (note)
stop_all_notes();
notes = true;
notes_pointer = np;
notes_count = n_count;
notes_repeat = n_repeat;
notes_rest = n_rest;
place = 0;
current_note = 0;
#ifdef PWM_AUDIO
note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100);
#else
note_frequency = (*notes_pointer)[current_note][0];
note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100);
#endif
note_position = 0;
#ifdef PWM_AUDIO
TIMSK3 |= _BV(OCIE3A);
#else
TIMSK3 |= _BV(OCIE3A);
TCCR3A |= _BV(COM3A1);
#endif
}
}
#ifdef PWM_AUDIO
void play_sample(uint8_t * s, uint16_t l, bool r) {
if (!inited) {
audio_init();
}
if (audio_config.enable) {
TIMSK3 &= ~_BV(OCIE3A);
stop_all_notes();
place_int = 0;
sample = s;
sample_length = l;
repeat = r;
TIMSK3 |= _BV(OCIE3A);
}
}
#endif
//------------------------------------------------------------------------------
// Override these functions in your keymap file to play different tunes on
// startup and bootloader jump
__attribute__ ((weak))
void play_startup_tone()
{
}
__attribute__ ((weak))
void play_goodbye_tone()
{
}
//------------------------------------------------------------------------------

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#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "musical_notes.h"
#include "song_list.h"
#include "voices.h"
#ifndef AUDIO_H
#define AUDIO_H
// Largely untested PWM audio mode (doesn't sound as good)
// #define PWM_AUDIO
// #define VIBRATO_ENABLE
// Enable vibrato strength/amplitude - slows down ISR too much
// #define VIBRATO_STRENGTH_ENABLE
typedef union {
uint8_t raw;
struct {
bool enable :1;
uint8_t level :7;
};
} audio_config_t;
void audio_toggle(void);
void audio_on(void);
void audio_off(void);
// Vibrato rate functions
#ifdef VIBRATO_ENABLE
void set_vibrato_rate(float rate);
void increase_vibrato_rate(float change);
void decrease_vibrato_rate(float change);
#ifdef VIBRATO_STRENGTH_ENABLE
void set_vibrato_strength(float strength);
void increase_vibrato_strength(float change);
void decrease_vibrato_strength(float change);
#endif
#endif
// Polyphony functions
void set_polyphony_rate(float rate);
void enable_polyphony();
void disable_polyphony();
void increase_polyphony_rate(float change);
void decrease_polyphony_rate(float change);
void set_timbre(float timbre);
void set_tempo(float tempo);
void increase_tempo(uint8_t tempo_change);
void decrease_tempo(uint8_t tempo_change);
void audio_init();
#ifdef PWM_AUDIO
void play_sample(uint8_t * s, uint16_t l, bool r);
#endif
void play_note(float freq, int vol);
void stop_note(float freq);
void stop_all_notes(void);
void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest);
#define SCALE (int []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
// These macros are used to allow play_notes to play an array of indeterminate
// length. This works around the limitation of C's sizeof operation on pointers.
// The global float array for the song must be used here.
#define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0]))))
#define PLAY_NOTE_ARRAY(note_array, note_repeat, note_rest_style) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), (note_repeat), (note_rest_style));
void play_goodbye_tone(void);
void play_startup_tone(void);
#endif

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#ifndef MUSICAL_NOTES_H
#define MUSICAL_NOTES_H
// Tempo Placeholder
#define TEMPO_DEFAULT 100
#define SONG(notes...) { notes }
// Note Types
#define MUSICAL_NOTE(note, duration) {(NOTE##note), duration}
#define WHOLE_NOTE(note) MUSICAL_NOTE(note, 64)
#define HALF_NOTE(note) MUSICAL_NOTE(note, 32)
#define QUARTER_NOTE(note) MUSICAL_NOTE(note, 16)
#define EIGHTH_NOTE(note) MUSICAL_NOTE(note, 8)
#define SIXTEENTH_NOTE(note) MUSICAL_NOTE(note, 4)
#define WHOLE_DOT_NOTE(note) MUSICAL_NOTE(note, 64+32)
#define HALF_DOT_NOTE(note) MUSICAL_NOTE(note, 32+16)
#define QUARTER_DOT_NOTE(note) MUSICAL_NOTE(note, 16+8)
#define EIGHTH_DOT_NOTE(note) MUSICAL_NOTE(note, 8+4)
#define SIXTEENTH_DOT_NOTE(note) MUSICAL_NOTE(note, 4+2)
// Note Type Shortcuts
#define M__NOTE(note, duration) MUSICAL_NOTE(note, duration)
#define W__NOTE(n) WHOLE_NOTE(n)
#define H__NOTE(n) HALF_NOTE(n)
#define Q__NOTE(n) QUARTER_NOTE(n)
#define E__NOTE(n) EIGHTH_NOTE(n)
#define S__NOTE(n) SIXTEENTH_NOTE(n)
#define WD_NOTE(n) WHOLE_DOT_NOTE(n)
#define HD_NOTE(n) HALF_DOT_NOTE(n)
#define QD_NOTE(n) QUARTER_DOT_NOTE(n)
#define ED_NOTE(n) EIGHTH_DOT_NOTE(n)
#define SD_NOTE(n) SIXTEENTH_DOT_NOTE(n)
// Note Styles
// Staccato makes sure there is a rest between each note. Think: TA TA TA
// Legato makes notes flow together. Think: TAAA
#define STACCATO 0.01
#define LEGATO 0
// Note Timbre
// Changes how the notes sound
#define TIMBRE_12 0.125
#define TIMBRE_25 0.250
#define TIMBRE_50 0.500
#define TIMBRE_75 0.750
#define TIMBRE_DEFAULT TIMBRE_50
// Notes - # = Octave
#define NOTE_REST 0.00
/* These notes are currently bugged
#define NOTE_C0 16.35
#define NOTE_CS0 17.32
#define NOTE_D0 18.35
#define NOTE_DS0 19.45
#define NOTE_E0 20.60
#define NOTE_F0 21.83
#define NOTE_FS0 23.12
#define NOTE_G0 24.50
#define NOTE_GS0 25.96
#define NOTE_A0 27.50
#define NOTE_AS0 29.14
#define NOTE_B0 30.87
#define NOTE_C1 32.70
#define NOTE_CS1 34.65
#define NOTE_D1 36.71
#define NOTE_DS1 38.89
#define NOTE_E1 41.20
#define NOTE_F1 43.65
#define NOTE_FS1 46.25
#define NOTE_G1 49.00
#define NOTE_GS1 51.91
#define NOTE_A1 55.00
#define NOTE_AS1 58.27
*/
#define NOTE_B1 61.74
#define NOTE_C2 65.41
#define NOTE_CS2 69.30
#define NOTE_D2 73.42
#define NOTE_DS2 77.78
#define NOTE_E2 82.41
#define NOTE_F2 87.31
#define NOTE_FS2 92.50
#define NOTE_G2 98.00
#define NOTE_GS2 103.83
#define NOTE_A2 110.00
#define NOTE_AS2 116.54
#define NOTE_B2 123.47
#define NOTE_C3 130.81
#define NOTE_CS3 138.59
#define NOTE_D3 146.83
#define NOTE_DS3 155.56
#define NOTE_E3 164.81
#define NOTE_F3 174.61
#define NOTE_FS3 185.00
#define NOTE_G3 196.00
#define NOTE_GS3 207.65
#define NOTE_A3 220.00
#define NOTE_AS3 233.08
#define NOTE_B3 246.94
#define NOTE_C4 261.63
#define NOTE_CS4 277.18
#define NOTE_D4 293.66
#define NOTE_DS4 311.13
#define NOTE_E4 329.63
#define NOTE_F4 349.23
#define NOTE_FS4 369.99
#define NOTE_G4 392.00
#define NOTE_GS4 415.30
#define NOTE_A4 440.00
#define NOTE_AS4 466.16
#define NOTE_B4 493.88
#define NOTE_C5 523.25
#define NOTE_CS5 554.37
#define NOTE_D5 587.33
#define NOTE_DS5 622.25
#define NOTE_E5 659.26
#define NOTE_F5 698.46
#define NOTE_FS5 739.99
#define NOTE_G5 783.99
#define NOTE_GS5 830.61
#define NOTE_A5 880.00
#define NOTE_AS5 932.33
#define NOTE_B5 987.77
#define NOTE_C6 1046.50
#define NOTE_CS6 1108.73
#define NOTE_D6 1174.66
#define NOTE_DS6 1244.51
#define NOTE_E6 1318.51
#define NOTE_F6 1396.91
#define NOTE_FS6 1479.98
#define NOTE_G6 1567.98
#define NOTE_GS6 1661.22
#define NOTE_A6 1760.00
#define NOTE_AS6 1864.66
#define NOTE_B6 1975.53
#define NOTE_C7 2093.00
#define NOTE_CS7 2217.46
#define NOTE_D7 2349.32
#define NOTE_DS7 2489.02
#define NOTE_E7 2637.02
#define NOTE_F7 2793.83
#define NOTE_FS7 2959.96
#define NOTE_G7 3135.96
#define NOTE_GS7 3322.44
#define NOTE_A7 3520.00
#define NOTE_AS7 3729.31
#define NOTE_B7 3951.07
#define NOTE_C8 4186.01
#define NOTE_CS8 4434.92
#define NOTE_D8 4698.64
#define NOTE_DS8 4978.03
#define NOTE_E8 5274.04
#define NOTE_F8 5587.65
#define NOTE_FS8 5919.91
#define NOTE_G8 6271.93
#define NOTE_GS8 6644.88
#define NOTE_A8 7040.00
#define NOTE_AS8 7458.62
#define NOTE_B8 7902.13
// Flat Aliases
#define NOTE_DF0 NOTE_CS0
#define NOTE_EF0 NOTE_DS0
#define NOTE_GF0 NOTE_FS0
#define NOTE_AF0 NOTE_GS0
#define NOTE_BF0 NOTE_AS0
#define NOTE_DF1 NOTE_CS1
#define NOTE_EF1 NOTE_DS1
#define NOTE_GF1 NOTE_FS1
#define NOTE_AF1 NOTE_GS1
#define NOTE_BF1 NOTE_AS1
#define NOTE_DF2 NOTE_CS2
#define NOTE_EF2 NOTE_DS2
#define NOTE_GF2 NOTE_FS2
#define NOTE_AF2 NOTE_GS2
#define NOTE_BF2 NOTE_AS2
#define NOTE_DF3 NOTE_CS3
#define NOTE_EF3 NOTE_DS3
#define NOTE_GF3 NOTE_FS3
#define NOTE_AF3 NOTE_GS3
#define NOTE_BF3 NOTE_AS3
#define NOTE_DF4 NOTE_CS4
#define NOTE_EF4 NOTE_DS4
#define NOTE_GF4 NOTE_FS4
#define NOTE_AF4 NOTE_GS4
#define NOTE_BF4 NOTE_AS4
#define NOTE_DF5 NOTE_CS5
#define NOTE_EF5 NOTE_DS5
#define NOTE_GF5 NOTE_FS5
#define NOTE_AF5 NOTE_GS5
#define NOTE_BF5 NOTE_AS5
#define NOTE_DF6 NOTE_CS6
#define NOTE_EF6 NOTE_DS6
#define NOTE_GF6 NOTE_FS6
#define NOTE_AF6 NOTE_GS6
#define NOTE_BF6 NOTE_AS6
#define NOTE_DF7 NOTE_CS7
#define NOTE_EF7 NOTE_DS7
#define NOTE_GF7 NOTE_FS7
#define NOTE_AF7 NOTE_GS7
#define NOTE_BF7 NOTE_AS7
#define NOTE_DF8 NOTE_CS8
#define NOTE_EF8 NOTE_DS8
#define NOTE_GF8 NOTE_FS8
#define NOTE_AF8 NOTE_GS8
#define NOTE_BF8 NOTE_AS8
#endif

117
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#include "musical_notes.h"
#ifndef SONG_LIST_H
#define SONG_LIST_H
#define ODE_TO_JOY \
Q__NOTE(_E4), Q__NOTE(_E4), Q__NOTE(_F4), Q__NOTE(_G4), \
Q__NOTE(_G4), Q__NOTE(_F4), Q__NOTE(_E4), Q__NOTE(_D4), \
Q__NOTE(_C4), Q__NOTE(_C4), Q__NOTE(_D4), Q__NOTE(_E4), \
QD_NOTE(_E4), E__NOTE(_D4), H__NOTE(_D4),
#define ROCK_A_BYE_BABY \
QD_NOTE(_B4), E__NOTE(_D4), Q__NOTE(_B5), \
H__NOTE(_A5), Q__NOTE(_G5), \
QD_NOTE(_B4), E__NOTE(_D5), Q__NOTE(_G5), \
H__NOTE(_FS5),
#define CLOSE_ENCOUNTERS_5_NOTE \
Q__NOTE(_D5), \
Q__NOTE(_E5), \
Q__NOTE(_C5), \
Q__NOTE(_C4), \
Q__NOTE(_G4),
#define DOE_A_DEER \
QD_NOTE(_C4), E__NOTE(_D4), \
QD_NOTE(_E4), E__NOTE(_C4), \
Q__NOTE(_E4), Q__NOTE(_C4), \
Q__NOTE(_E4),
#define GOODBYE_SOUND \
E__NOTE(_E7), \
E__NOTE(_A6), \
ED_NOTE(_E6),
#define STARTUP_SOUND \
ED_NOTE(_E7 ), \
E__NOTE(_CS7), \
E__NOTE(_E6 ), \
E__NOTE(_A6 ), \
M__NOTE(_CS7, 20),
#define QWERTY_SOUND \
E__NOTE(_GS6 ), \
E__NOTE(_A6 ), \
S__NOTE(_REST), \
Q__NOTE(_E7 ),
#define COLEMAK_SOUND \
E__NOTE(_GS6 ), \
E__NOTE(_A6 ), \
S__NOTE(_REST), \
ED_NOTE(_E7 ), \
S__NOTE(_REST), \
ED_NOTE(_GS7 ),
#define DVORAK_SOUND \
E__NOTE(_GS6 ), \
E__NOTE(_A6 ), \
S__NOTE(_REST), \
E__NOTE(_E7 ), \
S__NOTE(_REST), \
E__NOTE(_FS7 ), \
S__NOTE(_REST), \
E__NOTE(_E7 ),
#define PLOVER_SOUND \
E__NOTE(_GS6 ), \
E__NOTE(_A6 ), \
S__NOTE(_REST), \
ED_NOTE(_E7 ), \
S__NOTE(_REST), \
ED_NOTE(_A7 ),
#define PLOVER_GOODBYE_SOUND \
E__NOTE(_GS6 ), \
E__NOTE(_A6 ), \
S__NOTE(_REST), \
ED_NOTE(_A7 ), \
S__NOTE(_REST), \
ED_NOTE(_E7 ),
#define MUSIC_SCALE_SOUND \
E__NOTE(_A5 ), \
E__NOTE(_B5 ), \
E__NOTE(_CS6), \
E__NOTE(_D6 ), \
E__NOTE(_E6 ), \
E__NOTE(_FS6), \
E__NOTE(_GS6), \
E__NOTE(_A6 ),
#define CAPS_LOCK_ON_SOUND \
E__NOTE(_A3), \
E__NOTE(_B3),
#define CAPS_LOCK_OFF_SOUND \
E__NOTE(_B3), \
E__NOTE(_A3),
#define SCROLL_LOCK_ON_SOUND \
E__NOTE(_D4), \
E__NOTE(_E4),
#define SCROLL_LOCK_OFF_SOUND \
E__NOTE(_E4), \
E__NOTE(_D4),
#define NUM_LOCK_ON_SOUND \
E__NOTE(_D5), \
E__NOTE(_E5),
#define NUM_LOCK_OFF_SOUND \
E__NOTE(_E5), \
E__NOTE(_D5),
#endif

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#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#define VIBRATO_LUT_LENGTH 20
const float VIBRATO_LUT[VIBRATO_LUT_LENGTH] = { \
1.00223368114872,
1.00425299436105,
1.00585842560279,
1.00689052852052,
1.0072464122237,
1.00689052852052,
1.00585842560279,
1.00425299436105,
1.00223368114872,
1,
0.99777129706302,
0.99576501699778,
0.994175695650927,
0.993156625943589,
0.992805720491269,
0.993156625943589,
0.994175695650927,
0.99576501699778,
0.99777129706302,
1
};

60
quantum/audio/voices.c Normal file
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#include "voices.h"
extern uint16_t envelope_index;
extern float note_timbre;
voice_type voice = default_voice;
void set_voice(voice_type v) {
voice = v;
}
float voice_envelope(float frequency) {
// envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
switch (voice) {
case default_voice:
// nothing here on purpose
break;
case butts_fader:
switch (compensated_index) {
case 0 ... 9:
frequency = frequency / 4;
note_timbre = TIMBRE_12;
break;
case 10 ... 19:
frequency = frequency / 2;
note_timbre = TIMBRE_12;
break;
case 20 ... 200:
note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
break;
default:
note_timbre = 0;
break;
}
break;
case octave_crunch:
switch (compensated_index) {
case 0 ... 9:
case 20 ... 24:
case 30 ... 32:
frequency = frequency / 2;
note_timbre = TIMBRE_12;
break;
case 10 ... 19:
case 25 ... 29:
case 33 ... 35:
frequency = frequency * 2;
note_timbre = TIMBRE_12;
break;
default:
note_timbre = TIMBRE_12;
break;
}
break;
}
return frequency;
}

21
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#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "musical_notes.h"
#include "song_list.h"
#ifndef VOICES_H
#define VOICES_H
float voice_envelope(float frequency);
typedef enum {
default_voice,
butts_fader,
octave_crunch
} voice_type;
void set_voice(voice_type v);
#endif

265
quantum/audio/wave.h Normal file
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#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#define SINE_LENGTH 2048
const uint8_t sinewave[] PROGMEM= //2048 values
{
0x80,0x80,0x80,0x81,0x81,0x81,0x82,0x82,
0x83,0x83,0x83,0x84,0x84,0x85,0x85,0x85,
0x86,0x86,0x87,0x87,0x87,0x88,0x88,0x88,
0x89,0x89,0x8a,0x8a,0x8a,0x8b,0x8b,0x8c,
0x8c,0x8c,0x8d,0x8d,0x8e,0x8e,0x8e,0x8f,
0x8f,0x8f,0x90,0x90,0x91,0x91,0x91,0x92,
0x92,0x93,0x93,0x93,0x94,0x94,0x95,0x95,
0x95,0x96,0x96,0x96,0x97,0x97,0x98,0x98,
0x98,0x99,0x99,0x9a,0x9a,0x9a,0x9b,0x9b,
0x9b,0x9c,0x9c,0x9d,0x9d,0x9d,0x9e,0x9e,
0x9e,0x9f,0x9f,0xa0,0xa0,0xa0,0xa1,0xa1,
0xa2,0xa2,0xa2,0xa3,0xa3,0xa3,0xa4,0xa4,
0xa5,0xa5,0xa5,0xa6,0xa6,0xa6,0xa7,0xa7,
0xa7,0xa8,0xa8,0xa9,0xa9,0xa9,0xaa,0xaa,
0xaa,0xab,0xab,0xac,0xac,0xac,0xad,0xad,
0xad,0xae,0xae,0xae,0xaf,0xaf,0xb0,0xb0,
0xb0,0xb1,0xb1,0xb1,0xb2,0xb2,0xb2,0xb3,
0xb3,0xb4,0xb4,0xb4,0xb5,0xb5,0xb5,0xb6,
0xb6,0xb6,0xb7,0xb7,0xb7,0xb8,0xb8,0xb8,
0xb9,0xb9,0xba,0xba,0xba,0xbb,0xbb,0xbb,
0xbc,0xbc,0xbc,0xbd,0xbd,0xbd,0xbe,0xbe,
0xbe,0xbf,0xbf,0xbf,0xc0,0xc0,0xc0,0xc1,
0xc1,0xc1,0xc2,0xc2,0xc2,0xc3,0xc3,0xc3,
0xc4,0xc4,0xc4,0xc5,0xc5,0xc5,0xc6,0xc6,
0xc6,0xc7,0xc7,0xc7,0xc8,0xc8,0xc8,0xc9,
0xc9,0xc9,0xca,0xca,0xca,0xcb,0xcb,0xcb,
0xcb,0xcc,0xcc,0xcc,0xcd,0xcd,0xcd,0xce,
0xce,0xce,0xcf,0xcf,0xcf,0xcf,0xd0,0xd0,
0xd0,0xd1,0xd1,0xd1,0xd2,0xd2,0xd2,0xd2,
0xd3,0xd3,0xd3,0xd4,0xd4,0xd4,0xd5,0xd5,
0xd5,0xd5,0xd6,0xd6,0xd6,0xd7,0xd7,0xd7,
0xd7,0xd8,0xd8,0xd8,0xd9,0xd9,0xd9,0xd9,
0xda,0xda,0xda,0xda,0xdb,0xdb,0xdb,0xdc,
0xdc,0xdc,0xdc,0xdd,0xdd,0xdd,0xdd,0xde,
0xde,0xde,0xde,0xdf,0xdf,0xdf,0xe0,0xe0,
0xe0,0xe0,0xe1,0xe1,0xe1,0xe1,0xe2,0xe2,
0xe2,0xe2,0xe3,0xe3,0xe3,0xe3,0xe4,0xe4,
0xe4,0xe4,0xe4,0xe5,0xe5,0xe5,0xe5,0xe6,
0xe6,0xe6,0xe6,0xe7,0xe7,0xe7,0xe7,0xe8,
0xe8,0xe8,0xe8,0xe8,0xe9,0xe9,0xe9,0xe9,
0xea,0xea,0xea,0xea,0xea,0xeb,0xeb,0xeb,
0xeb,0xeb,0xec,0xec,0xec,0xec,0xec,0xed,
0xed,0xed,0xed,0xed,0xee,0xee,0xee,0xee,
0xee,0xef,0xef,0xef,0xef,0xef,0xf0,0xf0,
0xf0,0xf0,0xf0,0xf0,0xf1,0xf1,0xf1,0xf1,
0xf1,0xf2,0xf2,0xf2,0xf2,0xf2,0xf2,0xf3,
0xf3,0xf3,0xf3,0xf3,0xf3,0xf4,0xf4,0xf4,
0xf4,0xf4,0xf4,0xf5,0xf5,0xf5,0xf5,0xf5,
0xf5,0xf5,0xf6,0xf6,0xf6,0xf6,0xf6,0xf6,
0xf6,0xf7,0xf7,0xf7,0xf7,0xf7,0xf7,0xf7,
0xf8,0xf8,0xf8,0xf8,0xf8,0xf8,0xf8,0xf8,
0xf9,0xf9,0xf9,0xf9,0xf9,0xf9,0xf9,0xf9,
0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,
0xfa,0xfa,0xfb,0xfb,0xfb,0xfb,0xfb,0xfb,
0xfb,0xfb,0xfb,0xfb,0xfc,0xfc,0xfc,0xfc,
0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,
0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,
0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfe,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
0xfe,0xfe,0xfe,0xfd,0xfd,0xfd,0xfd,0xfd,
0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,
0xfd,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,
0xfc,0xfc,0xfc,0xfc,0xfc,0xfb,0xfb,0xfb,
0xfb,0xfb,0xfb,0xfb,0xfb,0xfb,0xfb,0xfa,
0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,0xfa,
0xfa,0xf9,0xf9,0xf9,0xf9,0xf9,0xf9,0xf9,
0xf9,0xf8,0xf8,0xf8,0xf8,0xf8,0xf8,0xf8,
0xf8,0xf7,0xf7,0xf7,0xf7,0xf7,0xf7,0xf7,
0xf6,0xf6,0xf6,0xf6,0xf6,0xf6,0xf6,0xf5,
0xf5,0xf5,0xf5,0xf5,0xf5,0xf5,0xf4,0xf4,
0xf4,0xf4,0xf4,0xf4,0xf3,0xf3,0xf3,0xf3,
0xf3,0xf3,0xf2,0xf2,0xf2,0xf2,0xf2,0xf2,
0xf1,0xf1,0xf1,0xf1,0xf1,0xf0,0xf0,0xf0,
0xf0,0xf0,0xf0,0xef,0xef,0xef,0xef,0xef,
0xee,0xee,0xee,0xee,0xee,0xed,0xed,0xed,
0xed,0xed,0xec,0xec,0xec,0xec,0xec,0xeb,
0xeb,0xeb,0xeb,0xeb,0xea,0xea,0xea,0xea,
0xea,0xe9,0xe9,0xe9,0xe9,0xe8,0xe8,0xe8,
0xe8,0xe8,0xe7,0xe7,0xe7,0xe7,0xe6,0xe6,
0xe6,0xe6,0xe5,0xe5,0xe5,0xe5,0xe4,0xe4,
0xe4,0xe4,0xe4,0xe3,0xe3,0xe3,0xe3,0xe2,
0xe2,0xe2,0xe2,0xe1,0xe1,0xe1,0xe1,0xe0,
0xe0,0xe0,0xe0,0xdf,0xdf,0xdf,0xde,0xde,
0xde,0xde,0xdd,0xdd,0xdd,0xdd,0xdc,0xdc,
0xdc,0xdc,0xdb,0xdb,0xdb,0xda,0xda,0xda,
0xda,0xd9,0xd9,0xd9,0xd9,0xd8,0xd8,0xd8,
0xd7,0xd7,0xd7,0xd7,0xd6,0xd6,0xd6,0xd5,
0xd5,0xd5,0xd5,0xd4,0xd4,0xd4,0xd3,0xd3,
0xd3,0xd2,0xd2,0xd2,0xd2,0xd1,0xd1,0xd1,
0xd0,0xd0,0xd0,0xcf,0xcf,0xcf,0xcf,0xce,
0xce,0xce,0xcd,0xcd,0xcd,0xcc,0xcc,0xcc,
0xcb,0xcb,0xcb,0xcb,0xca,0xca,0xca,0xc9,
0xc9,0xc9,0xc8,0xc8,0xc8,0xc7,0xc7,0xc7,
0xc6,0xc6,0xc6,0xc5,0xc5,0xc5,0xc4,0xc4,
0xc4,0xc3,0xc3,0xc3,0xc2,0xc2,0xc2,0xc1,
0xc1,0xc1,0xc0,0xc0,0xc0,0xbf,0xbf,0xbf,
0xbe,0xbe,0xbe,0xbd,0xbd,0xbd,0xbc,0xbc,
0xbc,0xbb,0xbb,0xbb,0xba,0xba,0xba,0xb9,
0xb9,0xb8,0xb8,0xb8,0xb7,0xb7,0xb7,0xb6,
0xb6,0xb6,0xb5,0xb5,0xb5,0xb4,0xb4,0xb4,
0xb3,0xb3,0xb2,0xb2,0xb2,0xb1,0xb1,0xb1,
0xb0,0xb0,0xb0,0xaf,0xaf,0xae,0xae,0xae,
0xad,0xad,0xad,0xac,0xac,0xac,0xab,0xab,
0xaa,0xaa,0xaa,0xa9,0xa9,0xa9,0xa8,0xa8,
0xa7,0xa7,0xa7,0xa6,0xa6,0xa6,0xa5,0xa5,
0xa5,0xa4,0xa4,0xa3,0xa3,0xa3,0xa2,0xa2,
0xa2,0xa1,0xa1,0xa0,0xa0,0xa0,0x9f,0x9f,
0x9e,0x9e,0x9e,0x9d,0x9d,0x9d,0x9c,0x9c,
0x9b,0x9b,0x9b,0x9a,0x9a,0x9a,0x99,0x99,
0x98,0x98,0x98,0x97,0x97,0x96,0x96,0x96,
0x95,0x95,0x95,0x94,0x94,0x93,0x93,0x93,
0x92,0x92,0x91,0x91,0x91,0x90,0x90,0x8f,
0x8f,0x8f,0x8e,0x8e,0x8e,0x8d,0x8d,0x8c,
0x8c,0x8c,0x8b,0x8b,0x8a,0x8a,0x8a,0x89,
0x89,0x88,0x88,0x88,0x87,0x87,0x87,0x86,
0x86,0x85,0x85,0x85,0x84,0x84,0x83,0x83,
0x83,0x82,0x82,0x81,0x81,0x81,0x80,0x80,
0x80,0x7f,0x7f,0x7e,0x7e,0x7e,0x7d,0x7d,
0x7c,0x7c,0x7c,0x7b,0x7b,0x7a,0x7a,0x7a,
0x79,0x79,0x78,0x78,0x78,0x77,0x77,0x77,
0x76,0x76,0x75,0x75,0x75,0x74,0x74,0x73,
0x73,0x73,0x72,0x72,0x71,0x71,0x71,0x70,
0x70,0x70,0x6f,0x6f,0x6e,0x6e,0x6e,0x6d,
0x6d,0x6c,0x6c,0x6c,0x6b,0x6b,0x6a,0x6a,
0x6a,0x69,0x69,0x69,0x68,0x68,0x67,0x67,
0x67,0x66,0x66,0x65,0x65,0x65,0x64,0x64,
0x64,0x63,0x63,0x62,0x62,0x62,0x61,0x61,
0x61,0x60,0x60,0x5f,0x5f,0x5f,0x5e,0x5e,
0x5d,0x5d,0x5d,0x5c,0x5c,0x5c,0x5b,0x5b,
0x5a,0x5a,0x5a,0x59,0x59,0x59,0x58,0x58,
0x58,0x57,0x57,0x56,0x56,0x56,0x55,0x55,
0x55,0x54,0x54,0x53,0x53,0x53,0x52,0x52,
0x52,0x51,0x51,0x51,0x50,0x50,0x4f,0x4f,
0x4f,0x4e,0x4e,0x4e,0x4d,0x4d,0x4d,0x4c,
0x4c,0x4b,0x4b,0x4b,0x4a,0x4a,0x4a,0x49,
0x49,0x49,0x48,0x48,0x48,0x47,0x47,0x47,
0x46,0x46,0x45,0x45,0x45,0x44,0x44,0x44,
0x43,0x43,0x43,0x42,0x42,0x42,0x41,0x41,
0x41,0x40,0x40,0x40,0x3f,0x3f,0x3f,0x3e,
0x3e,0x3e,0x3d,0x3d,0x3d,0x3c,0x3c,0x3c,
0x3b,0x3b,0x3b,0x3a,0x3a,0x3a,0x39,0x39,
0x39,0x38,0x38,0x38,0x37,0x37,0x37,0x36,
0x36,0x36,0x35,0x35,0x35,0x34,0x34,0x34,
0x34,0x33,0x33,0x33,0x32,0x32,0x32,0x31,
0x31,0x31,0x30,0x30,0x30,0x30,0x2f,0x2f,
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0xe,0xd,0xd,0xd,0xd,0xd,0xd,0xc,
0xc,0xc,0xc,0xc,0xc,0xb,0xb,0xb,
0xb,0xb,0xb,0xa,0xa,0xa,0xa,0xa,
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0xc,0xc,0xd,0xd,0xd,0xd,0xd,0xd,
0xe,0xe,0xe,0xe,0xe,0xf,0xf,0xf,
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};