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Balance reverb L/R channels

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gheskett
2021-08-05 02:17:01 -05:00
parent 50f472bd40
commit bf4cbc304e
1 changed files with 15 additions and 10 deletions
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25
src/audio/synthesis.c
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@@ -51,6 +51,11 @@
* To use with M64 sequences, set the Effect parameter for each channel accordingly (CC 91 for MIDI files).
*
* Most parameter configuration is to be done here, though BETTER_REVERB_SIZE can be adjusted in audio/synthesis.h.
*
* If after changing the parameters, you hear increasing noise followed by a sudden disappearance of reverb and/or scratchy audio, this indicates an s16 overflow.
* If this happens, stop immediately and reduce the parameters at fault. This becomes a ticking time bomb, and may eventually result in very loud noise if it reaches the point of s32 overflow.
* Checks to prevent this have not been implemented to maximize performance potential, so choose your parameters wisely.
* Generally speaking, a sound that doesn't seem to be fading is a parameter red flag (also known as feedback).
*/
@@ -113,15 +118,15 @@ s32 gReverbWetSignal = 0xE7; // Amount of reverb specific output in final signal
// These values are currently set by using delaysBaseline in the audio_reset_session function, so its behavior must be overridden to use dynamically (or at all).
s32 delaysL[NUM_ALLPASS] = {
1080, 1352, 1200,
1384, 1048, 1352,
1200, 1232, 1432,
1384, 1048, 1352,
928, 1504, 1512
};
s32 delaysR[NUM_ALLPASS] = {
1200, 1232, 1432,
928, 1504, 1512,
1080, 1352, 1200,
1384, 1048, 1352
1384, 1352, 1048,
928, 1512, 1504,
1080, 1200, 1352,
1200, 1432, 1232
};
// Like the delays array, but represents default max values that don't change (also probably somewhat redundant)
@@ -129,20 +134,20 @@ s32 delaysR[NUM_ALLPASS] = {
// Similarly to delaysL/R, these should be kept within the memory constraints defined by BETTER_REVERB_SIZE.
const s32 delaysBaselineL[NUM_ALLPASS] = {
1080, 1352, 1200,
1384, 1048, 1352,
1200, 1232, 1432,
1384, 1048, 1352,
928, 1504, 1512
};
const s32 delaysBaselineR[NUM_ALLPASS] = {
1200, 1432, 1232,
1384, 1352, 1048,
928, 1512, 1504,
1080, 1200, 1352,
1384, 1352, 1048
1200, 1432, 1232
};
// These values affect reverb decay depending on the filter index; can be messed with at any time
s32 reverbMultsL[NUM_ALLPASS / 3] = {0xD5, 0x6E, 0x36, 0x1F};
s32 reverbMultsR[NUM_ALLPASS / 3] = {0xCF, 0x71, 0x38, 0x26};
s32 reverbMultsL[NUM_ALLPASS / 3] = {0xD7, 0x6F, 0x36, 0x22};
s32 reverbMultsR[NUM_ALLPASS / 3] = {0xCF, 0x73, 0x38, 0x1F};
/* -----------------------------------------------------------------------END REVERB PARAMETERS----------------------------------------------------------------------- */