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Correct getGain for OPL4 PCM

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This commit is contained in:
cam900 2024-07-23 18:04:43 +09:00
parent 47d962f736
commit db3b102e1d
1 changed files with 2 additions and 0 deletions
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2
src/engine/platform/opl.cpp
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@ -2703,6 +2703,8 @@ int DivPlatformOPL::mapVelocity(int ch, float vel) {
float DivPlatformOPL::getGain(int ch, int vol) { float DivPlatformOPL::getGain(int ch, int vol) {
if (vol==0) return 0; if (vol==0) return 0;
if (PCM_CHECK(ch)) return 1.0/pow(10.0,(float)(127-vol)*0.375/20.0);
if (ch==adpcmChan) return (float)vol/255.0;
return 1.0/pow(10.0,(float)(63-vol)*0.75/20.0); return 1.0/pow(10.0,(float)(63-vol)*0.75/20.0);
} }