[Bug 14717] resampled sound is horrible

http://bugs.winehq.org/show_bug.cgi?id=14717

--- Comment #60 from Krzysztof Nikiel  2010-12-22 06:18:48 CST ---
(In reply to comment #59)
> There is one bug, though, in their implementation for 24-bit samples: it
> doesn't take the sign bit into account.

Indeed.
> Also, it would be nice to avoid filtering the input through the FIR altogether
> if no resampling is needed (e.g., 44.1k -> 44.1k).

I think there is no filtering when in/out rates are equal but i haven't tested
the output. 
Look at the 'if (dsb->freq != dsb->outfreq)' (line 197).
I should just copy the samples if they are equal.