On Fri, 2011-05-13 at 17:29 +0200, David Henningsson wrote: > In short; if we e g have Mic Boost levels at (0dB, 20dB, 40dB and 60dB) > and the user wants 30 dB, better have 20dB in hardware and +10dB in > software than 40dB in hardware and -10dB in software, as the latter one > is more likely to have digital distortion when the signal passes through > the ADC. > > There is a longer email on this list a while back, explaining more of > the philosophy behind, but I can't seem to find it right now. Ok, I think I understand why rounding down makes sense when recording. With playback, however, rounding towards 0 dB is definetely broken. My ability to think clearly happens to be currently a bit weakened, so I have to ask you: what's so magic about 0 dB? With playback rounding should always be done up - would it make sense to round always down with capture? -- Tanu
