Subject: Re: Proposal: Audio: Sampling rate conversion
To: John F. Woods <jfw@jfwhome.funhouse.com>
From: Wojciech Puchar <wojtek@chylonia.3miasto.net>
List: tech-kern
Date: 03/05/2002 13:51:24
>
> > IWAMOTO Toshihiro wrote:
> > > Personally, I would care about high quality 44.1k <-> 48k conversion,
> > > but I don't want to read a book of digital filter right now.
> > That's where I care about quality too, and that's also where it
> > is expensive to get since you need a sharp filter.
>
> It turns out the sox package in the pkgsrc collection has a resampling
> function, which refers to the following reference:
>  * Spiffy rate changer using Smith & Wesson Bandwidth-Limited Interpolation.
>  * The algorithm is described in "Bandlimited Interpolation -
>  * Introduction and Algorithm" by Julian O. Smith III.
>  * Available on ccrma-ftp.stanford.edu as
>  * pub/BandlimitedInterpolation.eps.Z or similar.
>  *
nice there are docs (i will look at it), but sox is painfully slow (while
giving high quality output)