Look at:

	http://www.cmlmicro.com/products/WData/FX469.htm

	That will give you some ideas.


On 21 Jan 2007 at 14:20, Richard Prosser wrote:

> You could try Googling "Kansas City Standard" IIRC it was 1200 baud
> onto cassette tape but is likely to be scalable with a higherf
> bandwidth media,
> 
> RP
> 
> On 20/01/07, Wouter van Ooijen <wouter@voti.nl> wrote:
> > > I need to store digital data on an audio soundtrack. Source data rate
> > > is not higher than 4800 bps, bandwidth of audio soundtrack is 32 KHz.
> >
> > You have ample 'room' between the baudrate and the audio bandwidth, so a
> > simple FSK modulation should do. IIRC 1200 baud tape (casette) recording
> > used to be common, scale the frequencies up by a factor 4 and try that.
> >
> > Wouter van Ooijen
> >
> > -- -------------------------------------------
> > Van Ooijen Technische Informatica: www.voti.nl
> > consultancy, development, PICmicro products
> > docent Hogeschool van Utrecht: www.voti.nl/hvu
> >
> >
> > --
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