Rockwell sound format

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Hi,

Gregor Hoffleit wrote:
> >Rockwell-Based modems, e.g. the Creatix 144FV, do work, but conversion of
> >their voice data to PVF isn't possible, because Rockwell considers their ADPCM
> >voice data format proprietary and refuses to hand out informations about it,
[..]
> I have no idea how much effort it is to decrypt this sound format 'by
> foreign means' (i.e. without using information by Rockwell), 

I don't know either, but I don't think it's easy. I know Harald Koenig
tried, but didn't get anywhere (he didn't spend too much time on it,
though).

> but supposed I had done this decryption, and had a conversion tool: 
> would it be legal to distribute this in source ?

I'm not perfectly sure, but I'd say yes. As far as I know, such reverse-
engineering is legal.

Peter?

gert

-- 
I'm doing my final exams... having very little time.... and a *very* bad mood!
                                                            //www.muc.de/~gert
Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-3243328                         gert.doering@physik.tu-muenchen.de