// these are imported from audio.c
extern uint16_t envelope_index;
-extern float note_timbre;
-extern float polyphony_rate;
-extern bool glissando;
+extern float note_timbre;
+extern float polyphony_rate;
+extern bool glissando;
voice_type voice = default_voice;
-void set_voice(voice_type v) {
- voice = v;
-}
+void set_voice(voice_type v) { voice = v; }
-void voice_iterate() {
- voice = (voice + 1) % number_of_voices;
-}
+void voice_iterate() { voice = (voice + 1) % number_of_voices; }
-void voice_deiterate() {
- voice = (voice - 1 + number_of_voices) % number_of_voices;
-}
+void voice_deiterate() { voice = (voice - 1 + number_of_voices) % number_of_voices; }
float voice_envelope(float frequency) {
// envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
- __attribute__ ((unused))
- uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
+ __attribute__((unused)) uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
switch (voice) {
case default_voice:
- glissando = true;
- note_timbre = TIMBRE_50;
+ glissando = false;
+ note_timbre = TIMBRE_50;
polyphony_rate = 0;
- break;
+ break;
- #ifdef AUDIO_VOICES
+#ifdef AUDIO_VOICES
case something:
- glissando = false;
+ glissando = false;
polyphony_rate = 0;
switch (compensated_index) {
case 0 ... 9:
break;
case drums:
- glissando = false;
+ glissando = false;
polyphony_rate = 0;
- // switch (compensated_index) {
- // case 0 ... 10:
- // note_timbre = 0.5;
- // break;
- // case 11 ... 20:
- // note_timbre = 0.5 * (21 - compensated_index) / 10;
- // break;
- // default:
- // note_timbre = 0;
- // break;
- // }
- // frequency = (rand() % (int)(frequency * 1.2 - frequency)) + (frequency * 0.8);
+ // switch (compensated_index) {
+ // case 0 ... 10:
+ // note_timbre = 0.5;
+ // break;
+ // case 11 ... 20:
+ // note_timbre = 0.5 * (21 - compensated_index) / 10;
+ // break;
+ // default:
+ // note_timbre = 0;
+ // break;
+ // }
+ // frequency = (rand() % (int)(frequency * 1.2 - frequency)) + (frequency * 0.8);
if (frequency < 80.0) {
-
} else if (frequency < 160.0) {
-
// Bass drum: 60 - 100 Hz
frequency = (rand() % (int)(40)) + 60;
switch (envelope_index) {
}
} else if (frequency < 320.0) {
-
-
// Snare drum: 1 - 2 KHz
frequency = (rand() % (int)(1000)) + 1000;
switch (envelope_index) {
}
} else if (frequency < 640.0) {
-
// Closed Hi-hat: 3 - 5 KHz
frequency = (rand() % (int)(2000)) + 3000;
switch (envelope_index) {
}
} else if (frequency < 1280.0) {
-
// Open Hi-hat: 3 - 5 KHz
frequency = (rand() % (int)(2000)) + 3000;
switch (envelope_index) {
note_timbre = 0;
break;
}
-
}
break;
case butts_fader:
- glissando = true;
+ glissando = true;
polyphony_rate = 0;
switch (compensated_index) {
case 0 ... 9:
- frequency = frequency / 4;
+ frequency = frequency / 4;
note_timbre = TIMBRE_12;
- break;
+ break;
case 10 ... 19:
- frequency = frequency / 2;
+ frequency = frequency / 2;
note_timbre = TIMBRE_12;
- break;
+ break;
case 20 ... 200:
- note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
- break;
+ note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2) * .125;
+ break;
default:
note_timbre = 0;
- break;
+ break;
}
- break;
-
- // case octave_crunch:
- // polyphony_rate = 0;
- // 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;
+ break;
- // default:
- // note_timbre = TIMBRE_12;
- // break;
- // }
- // break;
+ // case octave_crunch:
+ // polyphony_rate = 0;
+ // 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;
case duty_osc:
// This slows the loop down a substantial amount, so higher notes may freeze
- glissando = true;
+ glissando = true;
polyphony_rate = 0;
switch (compensated_index) {
default:
- #define OCS_SPEED 10
- #define OCS_AMP .25
+# define OCS_SPEED 10
+# define OCS_AMP .25
// sine wave is slow
// note_timbre = (sin((float)compensated_index/10000*OCS_SPEED) * OCS_AMP / 2) + .5;
// triangle wave is a bit faster
- note_timbre = (float)abs((compensated_index*OCS_SPEED % 3000) - 1500) * ( OCS_AMP / 1500 ) + (1 - OCS_AMP) / 2;
- break;
+ note_timbre = (float)abs((compensated_index * OCS_SPEED % 3000) - 1500) * (OCS_AMP / 1500) + (1 - OCS_AMP) / 2;
+ break;
}
- break;
+ break;
case duty_octave_down:
- glissando = true;
+ glissando = true;
polyphony_rate = 0;
- note_timbre = (envelope_index % 2) * .125 + .375 * 2;
- if ((envelope_index % 4) == 0)
- note_timbre = 0.5;
- if ((envelope_index % 8) == 0)
- note_timbre = 0;
+ note_timbre = (envelope_index % 2) * .125 + .375 * 2;
+ if ((envelope_index % 4) == 0) note_timbre = 0.5;
+ if ((envelope_index % 8) == 0) note_timbre = 0;
break;
case delayed_vibrato:
- glissando = true;
+ glissando = true;
polyphony_rate = 0;
- note_timbre = TIMBRE_50;
- #define VOICE_VIBRATO_DELAY 150
- #define VOICE_VIBRATO_SPEED 50
+ note_timbre = TIMBRE_50;
+# define VOICE_VIBRATO_DELAY 150
+# define VOICE_VIBRATO_SPEED 50
switch (compensated_index) {
case 0 ... VOICE_VIBRATO_DELAY:
break;
default:
- frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+ frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1)) / 1000 * VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
break;
}
break;
- // case delayed_vibrato_octave:
- // polyphony_rate = 0;
- // if ((envelope_index % 2) == 1) {
- // note_timbre = 0.55;
- // } else {
- // note_timbre = 0.45;
- // }
- // #define VOICE_VIBRATO_DELAY 150
- // #define VOICE_VIBRATO_SPEED 50
- // switch (compensated_index) {
- // case 0 ... VOICE_VIBRATO_DELAY:
- // break;
- // default:
- // frequency = frequency * VIBRATO_LUT[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
- // break;
- // }
- // break;
- // case duty_fifth_down:
- // note_timbre = 0.5;
- // if ((envelope_index % 3) == 0)
- // note_timbre = 0.75;
- // break;
- // case duty_fourth_down:
- // note_timbre = 0.0;
- // if ((envelope_index % 12) == 0)
- // note_timbre = 0.75;
- // if (((envelope_index % 12) % 4) != 1)
- // note_timbre = 0.75;
- // break;
- // case duty_third_down:
- // note_timbre = 0.5;
- // if ((envelope_index % 5) == 0)
- // note_timbre = 0.75;
- // break;
- // case duty_fifth_third_down:
- // note_timbre = 0.5;
- // if ((envelope_index % 5) == 0)
- // note_timbre = 0.75;
- // if ((envelope_index % 3) == 0)
- // note_timbre = 0.25;
- // break;
-
- #endif
-
- default:
- break;
+ // case delayed_vibrato_octave:
+ // polyphony_rate = 0;
+ // if ((envelope_index % 2) == 1) {
+ // note_timbre = 0.55;
+ // } else {
+ // note_timbre = 0.45;
+ // }
+ // #define VOICE_VIBRATO_DELAY 150
+ // #define VOICE_VIBRATO_SPEED 50
+ // switch (compensated_index) {
+ // case 0 ... VOICE_VIBRATO_DELAY:
+ // break;
+ // default:
+ // frequency = frequency * VIBRATO_LUT[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+ // break;
+ // }
+ // break;
+ // case duty_fifth_down:
+ // note_timbre = 0.5;
+ // if ((envelope_index % 3) == 0)
+ // note_timbre = 0.75;
+ // break;
+ // case duty_fourth_down:
+ // note_timbre = 0.0;
+ // if ((envelope_index % 12) == 0)
+ // note_timbre = 0.75;
+ // if (((envelope_index % 12) % 4) != 1)
+ // note_timbre = 0.75;
+ // break;
+ // case duty_third_down:
+ // note_timbre = 0.5;
+ // if ((envelope_index % 5) == 0)
+ // note_timbre = 0.75;
+ // break;
+ // case duty_fifth_third_down:
+ // note_timbre = 0.5;
+ // if ((envelope_index % 5) == 0)
+ // note_timbre = 0.75;
+ // if ((envelope_index % 3) == 0)
+ // note_timbre = 0.25;
+ // break;
+
+#endif
+
+ default:
+ break;
}
return frequency;
projects / qmk_firmware.git / blobdiff