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
>
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