[MPlayer-dev-eng] Re: pre5?

[Anders Johansson]

> On Sat, Jun 08, 2002 at 12:27:01AM +0200, Felix Buenemann wrote:
> > On Friday 07 June 2002 16:26, Tobias Diedrich wrote:
> > > Anders Johansson wrote:
> > > > > BTW, once the new AO plugin architecture is in place, is anyone
> > > > > interested in fixing resample so the pitch isn't off by so much? It's
> > > > > frequently off by as much as 5% with the current implementation...
> > > >
> > > > Can you hear it? I have never tried listening t music or anything like
> > >
> > > Well it would definetely be nice to have an exact resampling plugin,
> > > e.g. for playing 23.98fps movies at 25fps.
> > > (Movies are converted to PAL by increasing speed)
> > For that purpose it is desirable to use a pitch scaling algorithm, that would 
> > allow to resample the sound without modifying the pitch, so the speech still 
> > sounds natural. An interesting algorithmn for pitch-scaling can be found at:
> > http://www.dspdimension.com/ (with sample sources)
> 
> Umm, resampling should never adjust pitch aside from adding artifacts
> at other frequencies due to aliasing, etc. IIRC, pitch scaling would
> be for when you want to speed up/slow down sound without changing the
> pitch, right?
> 
> Anyway, personally, I'd be happy with a horrid nearest-neighbor
> resampler if it could just get the frequency right. 

I assume this has something to do with the video playback beeing
syncronized to the video, right?

I'll see what I can do...

> But it probably doesn't make sense to work on anything until the new
> aop system is designed and implemented.
> 
> 
> Rich
> 

Cheers,
//Anders