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ymz280b: Fix major mixer overdriving [R. Belmont]

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This commit is contained in:
arbee 2020-12-05 10:49:48 -05:00
parent 1fa29c1f78
commit d0cf574b51
1 changed files with 4 additions and 4 deletions
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8
src/devices/sound/ymz280b.cpp
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@ -452,8 +452,8 @@ void ymz280b_device::sound_stream_update(sound_stream &stream, std::vector<read_
while (remaining > 0 && voice->output_pos < FRAC_ONE) while (remaining > 0 && voice->output_pos < FRAC_ONE)
{ {
int interp_sample = ((s32(prev) * (FRAC_ONE - voice->output_pos)) + (s32(curr) * voice->output_pos)) >> FRAC_BITS; int interp_sample = ((s32(prev) * (FRAC_ONE - voice->output_pos)) + (s32(curr) * voice->output_pos)) >> FRAC_BITS;
lacc.add_int(sampindex, interp_sample * lvol, 32768 * 256); lacc.add_int(sampindex, interp_sample * lvol / 2, 32768 * 256);
racc.add_int(sampindex, interp_sample * rvol, 32768 * 256); racc.add_int(sampindex, interp_sample * rvol / 2, 32768 * 256);
sampindex++; sampindex++;
voice->output_pos += voice->output_step; voice->output_pos += voice->output_step;
remaining--; remaining--;
@ -517,8 +517,8 @@ void ymz280b_device::sound_stream_update(sound_stream &stream, std::vector<read_
while (remaining > 0 && voice->output_pos < FRAC_ONE) while (remaining > 0 && voice->output_pos < FRAC_ONE)
{ {
int interp_sample = ((s32(prev) * (FRAC_ONE - voice->output_pos)) + (s32(curr) * voice->output_pos)) >> FRAC_BITS; int interp_sample = ((s32(prev) * (FRAC_ONE - voice->output_pos)) + (s32(curr) * voice->output_pos)) >> FRAC_BITS;
lacc.add_int(sampindex, interp_sample * lvol, 32768 * 256); lacc.add_int(sampindex, interp_sample * lvol / 2, 32768 * 256);
racc.add_int(sampindex, interp_sample * rvol, 32768 * 256); racc.add_int(sampindex, interp_sample * rvol / 2, 32768 * 256);
sampindex++; sampindex++;
voice->output_pos += voice->output_step; voice->output_pos += voice->output_step;
remaining--; remaining--;