g_sdl at zewt.org
Tue Mar 11 19:20:09 EST 2003
On Wed, Mar 12, 2003 at 01:10:36AM +0100, Max Horn wrote:
> Actually even the rate 2 conversion is pretty bad. One might think that
> just duplicating every sample is sufficient for a rate conversion from
> 22khz to 44khz (or vice versa, leaving out every second sample) but
> that's actually not true - you are introducing undesired new bands into
I don't think anyone thinks this is really a good way to do it. :)
It's just the easiest, since you don't need any lookahead. Even a
simple linear filter (one frame of lookahead) would be a lot better (but
still pretty bad).
> the output data. The "proper" way is to add some filters afterwards....
> admittedly it's been far too long since i did anything on this topic so
> please excuse the sloppy wording, but I hope the idea gets across.
> There are some great "full" resamplers out there, but I am not sure how
I believe the alt-convert stuff does all of this. It's just not yet
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