diff options
Diffstat (limited to 'Alc')
| -rw-r--r-- | Alc/ALu.c | 21 |
1 files changed, 18 insertions, 3 deletions
@@ -704,9 +704,24 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext, ALsource *ALSource, if(ALSource->WetGainHFAuto) WetGainHF[i] *= ConeHF; - // Apply minimal attenuation in place of missing - // statistical reverb model. - WetGain[i] *= pow(DryMix, 1.0f / 2.0f); + if(ALSource->Send[i].Slot->effect.type == AL_EFFECT_REVERB || + ALSource->Send[i].Slot->effect.type == AL_EFFECT_EAXREVERB) + { + /* Apply a decay-time transformation to the wet path, + * based on the attenuation of the dry path. This should + * better approximate the statistical attenuation model + * for the reverb effect. + * + * This simple equation converts the distance attenuation + * into the time it would take to reach -60 dB. From + * there it establishes an origin (0.333s; the decay time + * that will produce equal attenuation) and applies the + * current decay time. Finally, it converts the result + * back to an attenuation for the reverb path. + */ + WetGain[i] *= pow(10.0f, log10(flAttenuation) * 0.333f / + ALSource->Send[i].Slot->effect.Reverb.DecayTime); + } } else { |