On Sun, Aug 12, 2012 at 6:10 PM, Leonid Isaev <lisaev@xxxxxxxxxxxx> wrote: > Correct me if I'm wrong but I don't think that's possible, because dB is > normalized to max power (in watts = intensity). If I understand correctly, 0dB is "don't apply any gain". On some chips, that's indeed the same as max, but I have had several laptops where that is not the case. -t