>
> The *PC speaker*?! We're not talking about a bloody soundblaster!
>
> The PC speaker has a 1 bit input. Nothing like 5-6 bit. Also nothing FM.
>
> > be done with a C64, but additionally, the PC Speaker can be fed much higher
> > quality data (since a PC usually can sample a type at 8 or 16 bits, while
> > the c64 (etc.) tape could only be sampled at 1 bit).
>
> Uhuh. PC. Sample. 8-16 bits. You're dreaming of a soundcard, again.
>
Not that you would want to use the CPU cycles necessary to do this, but
the timer associated with the PC speaker can be programmed to generate
a supersonic tone, i.e., above normal audible range. Further, one can
pulse-width modulate this tone with audio data. The speaker becomes
a low-pass filter as well as a transducer. The result is audio that
sounds at least as good as AM Radio, although it is quite low in
volume. I have heard it done and, I think an early version of Linux
had such a driver within.
Cheers,
Dick Johnson
***** FILE SYSTEM WAS MODIFIED *****
Penguin : Linux version 2.1.118 on an i586 machine (66.15 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.
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