[openal] Attenuation Roll-Off problems (too silent)

Roland Plüss roland at rptd.ch
Sat May 21 14:52:04 EDT 2022

So if I have only a filter on direct path then reverb should be source 
gain times listener gain times reverb gain.

Am 21.05.22 um 14:34 schrieb Chris Robinson:
> On Saturday, May 21, 2022 5:12:59 AM PDT Roland Plüss wrote:
>> This does not seem to work. I tested with reverb gain of 0.02 once with
>> source gain 10, 100 and 1000 but the final reverb gain is unchanged.
>> This leads me to conclude reverb gain is not linked with source gain. Is
>> this wrong?
> The source gain is clamped before the reverb gain is applied. With no
> attenuation, it's essentially:
> mix_gain = clamp(source.gain, source.min_gain, source.max_gain) *
>      source.filter.gain * listener.gain * reverb.gain;
> The sound is then mixed to the effect buffer with that gain, then the effect
> processes its buffer when all sources have mixed to it.
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