Date   : Thu, 15 Feb 1996 11:53:08 +0100
From   : Ole Stauning <os@...>
Subject: Re: Tape decoding status

> > I wrote a encoder yesterday, which was extremely simple (with
> > reversed freqencies :-). But i would also like to compare it
> > with at real beeb's sound.
> 
> Does it produce output readable by a Beeb? That would be a nice utility 
> for people to transfer data from their PCs to their Beeb!  Are you 
> planning on making it a full utility and releasing it?  I'd be happy to 
> put such a thing on my page, as one user has already asked me if I knew of 
> such a program.
> 

I actually don't know if it works as my beeb is in Denmark. I am in Germany
at the moment, but are going home the end of this month. I will continue
the work when i get back. I wrote the player on basis on the info from
the mails i got. I still have to add some format-specifikations blocksize
CRCs... if i want to read standart formats. I will probably have to find my 
Advanced user guide when i get home to find this information ( If some of
you boys and girls have the info, you should not hesitate to mail it to me )

All i can say until now is that it really sounds like my good old beeb ;-)

It's real easy to program on a Linux with a /dev/dsp device. I am currently
thinking of how to write a decoder which i suspect is much more difficult. 
I probably have to start two processes; one for only reading the audio
( i want the input sample to work as a timer ) and one for decoding when 
one audio buffer is full. ( i still have to learn sometihing about signals 
and shared memory :-)

I will make it available on my web-page or anon ftp when/if im done.

Regards

 Ole


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