drashna/qmk_firmware
1
0
Fork 0
Code Activity Actions

Merge remote-tracking branch 'origin/master'

Browse source 
# Conflicts:
#	quantum/audio/voices.c
This commit is contained in:
Jack Humbert 2016-04-22 01:04:13 -04:00
commit a8086126fe
5 changed files with 85 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

6
quantum/audio/audio.h
View file

@ -50,8 +50,8 @@ void decrease_vibrato_strength(float change);
// Polyphony functions
void set_polyphony_rate(float rate);
void enable_polyphony();
void disable_polyphony();
void enable_polyphony(void);
void disable_polyphony(void);
void increase_polyphony_rate(float change);
void decrease_polyphony_rate(float change);
@ -61,7 +61,7 @@ void set_tempo(float tempo);
void increase_tempo(uint8_t tempo_change);
void decrease_tempo(uint8_t tempo_change);
void audio_init();
void audio_init(void);
#ifdef PWM_AUDIO
void play_sample(uint8_t * s, uint16_t l, bool r);

41
quantum/audio/voices.c
View file

@ -1,4 +1,5 @@
#include "voices.h"
#include "stdlib.h"
// these are imported from audio.c
extern uint16_t envelope_index;
@ -27,26 +28,31 @@ float voice_envelope(float frequency) {
case default_voice:
note_timbre = TIMBRE_50;
polyphony_rate = 0;
break;
break;
case butts_fader:
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;
break;
case 20 ... 200:
note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
break;
break;
default:
note_timbre = 0;
break;
break;
}
break;
break;
case octave_crunch:
polyphony_rate = 0;
switch (compensated_index) {
@ -56,17 +62,20 @@ float voice_envelope(float frequency) {
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;
}
break;
break;
case duty_osc:
// This slows the loop down a substantial amount, so higher notes may freeze
polyphony_rate = 0;
@ -78,9 +87,10 @@ float voice_envelope(float frequency) {
// 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;
@ -88,18 +98,21 @@ float voice_envelope(float frequency) {
note_timbre = 0.5;
if ((envelope_index % 8) == 0)
note_timbre = 0;
break;
break;
case duty_fifth_down:
note_timbre = 0.5;
if ((envelope_index % 5) == 0)
note_timbre = 0.75;
break;
break;
case duty_fourth_down:
if ((envelope_index % 12) == 0)
note_timbre = 0.25;
else
note_timbre = 0.5;
break;
break;
default:
break;
}
return frequency;

4
quantum/audio/voices.h
View file

@ -22,7 +22,7 @@ typedef enum {
} voice_type;
void set_voice(voice_type v);
void voice_iterate();
void voice_deiterate();
void voice_iterate(void);
void voice_deiterate(void);
#endif