diff options
-rw-r--r-- | apps/dsp.c | 15 | ||||
-rw-r--r-- | firmware/sound.c | 18 |
2 files changed, 17 insertions, 16 deletions
diff --git a/apps/dsp.c b/apps/dsp.c index 1f477d3f70..e5696bc7cd 100644 --- a/apps/dsp.c +++ b/apps/dsp.c | |||
@@ -706,13 +706,14 @@ void stereo_width_set(int value) | |||
706 | { | 706 | { |
707 | long width, straight, cross; | 707 | long width, straight, cross; |
708 | 708 | ||
709 | width = value*0x7fffff/100; | 709 | width = value * 0x7fffff / 100; |
710 | if (value <= 100) { | 710 | if (value <= 100) { |
711 | straight = (0x7fffff + width)/2; | 711 | straight = (0x7fffff + width) / 2; |
712 | cross = straight - width; | 712 | cross = straight - width; |
713 | } else { | 713 | } else { |
714 | straight = 0x7fffff; | 714 | /* straight = (1 + width) / (2 * width) */ |
715 | cross = 0x7fffff - ((int64_t)(2*width) << 23)/(0x7fffff + width); | 715 | straight = ((int64_t)(0x7fffff + width) << 22) / width; |
716 | cross = straight - 0x7fffff; | ||
716 | } | 717 | } |
717 | sw_gain = straight << 8; | 718 | sw_gain = straight << 8; |
718 | sw_cross = cross << 8; | 719 | sw_cross = cross << 8; |
@@ -752,10 +753,10 @@ static void channels_process(int32_t **src, int num) | |||
752 | break; | 753 | break; |
753 | case SOUND_CHAN_KARAOKE: | 754 | case SOUND_CHAN_KARAOKE: |
754 | for (i = 0; i < num; i++) { | 755 | for (i = 0; i < num; i++) { |
755 | int32_t left_sample = sl[i]; | 756 | int32_t left_sample = sl[i]/2; |
756 | 757 | ||
757 | sl[i] -= sr[i]; | 758 | sl[i] = left_sample - sr[i]/2; |
758 | sr[i] -= left_sample; | 759 | sr[i] = sr[i]/2 - left_sample; |
759 | } | 760 | } |
760 | break; | 761 | break; |
761 | } | 762 | } |
diff --git a/firmware/sound.c b/firmware/sound.c index 88412c4094..70f7346599 100644 --- a/firmware/sound.c +++ b/firmware/sound.c | |||
@@ -504,12 +504,12 @@ static void set_channel_config(void) | |||
504 | } | 504 | } |
505 | else | 505 | else |
506 | { | 506 | { |
507 | fp_straight = - (1<<19); | 507 | /* straight = - (1 + width) / (2 * width) */ |
508 | fp_cross = ((2 * fp_width / (((1<<19) + fp_width) >> 10)) | 508 | fp_straight = - ((((1<<19) + fp_width) / (fp_width >> 9)) << 9); |
509 | << 9) - (1<<19); | 509 | fp_cross = (1<<19) + fp_straight; |
510 | } | 510 | } |
511 | val_ll = val_rr = fp_straight & 0xFFFFF; | 511 | val_ll = val_rr = fp_straight & 0xfffff; |
512 | val_lr = val_rl = fp_cross & 0xFFFFF; | 512 | val_lr = val_rl = fp_cross & 0xfffff; |
513 | } | 513 | } |
514 | break; | 514 | break; |
515 | 515 | ||
@@ -528,10 +528,10 @@ static void set_channel_config(void) | |||
528 | break; | 528 | break; |
529 | 529 | ||
530 | case SOUND_CHAN_KARAOKE: | 530 | case SOUND_CHAN_KARAOKE: |
531 | val_ll = 0x80001; | 531 | val_ll = 0xc0000; |
532 | val_lr = 0x7ffff; | 532 | val_lr = 0x40000; |
533 | val_rl = 0x7ffff; | 533 | val_rl = 0x40000; |
534 | val_rr = 0x80001; | 534 | val_rr = 0xc0000; |
535 | break; | 535 | break; |
536 | } | 536 | } |
537 | 537 | ||