#include "voices.h"
+#include "audio.h"
+#include "stdlib.h"
// these are imported from audio.c
extern uint16_t envelope_index;
extern float note_timbre;
extern float polyphony_rate;
-voice_type voice = duty_osc;
+voice_type voice = default_voice;
void set_voice(voice_type v) {
voice = v;
}
void voice_deiterate() {
- voice = (voice - 1) % number_of_voices;
+ voice = (voice - 1 + number_of_voices) % number_of_voices;
}
float voice_envelope(float frequency) {
case default_voice:
note_timbre = TIMBRE_50;
polyphony_rate = 0;
- break;
- case butts_fader:
+ break;
+
+ case something:
polyphony_rate = 0;
switch (compensated_index) {
case 0 ... 9:
- frequency = frequency / 4;
note_timbre = TIMBRE_12;
- break;
+ break;
+
case 10 ... 19:
- frequency = frequency / 2;
- note_timbre = TIMBRE_12;
- break;
+ note_timbre = TIMBRE_25;
+ break;
+
case 20 ... 200:
- note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
- break;
+ note_timbre = .25 + .125 + pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
+ break;
+
default:
- note_timbre = 0;
- break;
+ note_timbre = .25;
+ break;
}
- break;
- case octave_crunch:
+ break;
+
+ case butts_fader:
polyphony_rate = 0;
switch (compensated_index) {
case 0 ... 9:
- case 20 ... 24:
- case 30 ... 32:
- frequency = frequency / 2;
+ frequency = frequency / 4;
note_timbre = TIMBRE_12;
- break;
+ break;
+
case 10 ... 19:
- case 25 ... 29:
- case 33 ... 35:
- 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;
+
default:
- note_timbre = TIMBRE_12;
- break;
+ 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;
+
+ // default:
+ // note_timbre = TIMBRE_12;
+ // break;
+ // }
+ // break;
+
case duty_osc:
// This slows the loop down a substantial amount, so higher notes may freeze
polyphony_rate = 0;
// 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;
+ break;
}
- break;
+ break;
+
case duty_octave_down:
polyphony_rate = 0;
note_timbre = (envelope_index % 2) * .125 + .375 * 2;
- break;
+ if ((envelope_index % 4) == 0)
+ note_timbre = 0.5;
+ if ((envelope_index % 8) == 0)
+ note_timbre = 0;
+ break;
+ case delayed_vibrato:
+ polyphony_rate = 0;
+ 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)];
+ 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;
+
+ default:
+ break;
}
return frequency;
-}
\ No newline at end of file
+}
+
+