[PD-ot] RS232 sound card?
Thomas Grill
gr at grrrr.org
Thu Apr 17 17:13:44 CEST 2008
here's something like that:
http://www.instructables.com/id/8-Bit-Serial-Digital-to-Analog-5v-
range-Converte/
no idea about the achievable baud/audio sample rate though
gr~~~
Am 17.04.2008 um 16:36 schrieb Mathieu Bouchard:
> On Wed, 16 Apr 2008, Hans-Christoph Steiner wrote:
>
>> Has anyone ever seen an RS232 sound card? I am looking for a
>> sound card to hook up to old wifi routers. They will run Pd, and
>> have serial ports built-in, so it would be awesome to be able to
>> hook up a serial sound card to them. It is possible to add USB to
>> many wifi routers, but it is a lot more work.
>
> There was software called MODPLAY for DOS, which included a plan
> for a DIY parallel port soundcard running at 9.6 kHz, 8 bit, as
> this type of soundcard was directly supported by that software. It
> uses only resistors, as a kind of DIY DAC chip. It's better to use
> an actual DAC chip, unless your resistors are very precise.
>
> It could be adapted for serial port if you have a RS232
> deserialiser chip with enough bits in it. I don't know what name
> you will find it under. It's also possible that you have to use a
> combination of two chips for that, e.g. a RS232 chip with a
> separate deserialiser. I don't know what's the real name for a
> deserialiser. If you can't find one, you need in turn to make it
> combining a mux and a 8-bit memory.
>
> Alternately, a PIC can function as a soundcard. This is probably
> easier for anyone who is more into software than into electronics.
>
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