transferring data through the sound card

transferring data through the sound card

[Nischal Saxena]

hello,
 how is it possible to transfer data across two PC using the sound card.
thanking u
Nischal

Re: transferring data through the sound card

[Jamie Lokier]

Nischal Saxena wrote:
>  how is it possible to transfer data across two PC using the sound card.

It's possible using a software modem, but it's much easier to use a
network card instead :)

-- Jamie

Re: transferring data through the sound card

[Paulo Marques]

Jamie Lokier wrote:

> Nischal Saxena wrote:
> 
>> how is it possible to transfer data across two PC using the sound card.
>>
> 
> It's possible using a software modem, but it's much easier to use a
> network card instead :)
> 


Since Nischal didn't specify which port on the sound card he was thinking about, 
I started to think that a SPDIF digital output / input, would give much better 
results:

6 channels, 16 bit, 48KHz = 4.6Mbit/s

I don't know enough about the standard digital format and the maximum bandwidth 
that we could get from a sound card, but in theory we probably could connect the 
digital input on a sound card to digital output on another card (and vice-versa) 
and map the whole thing as a network interface :)

Anyway, this is an extremely crazy, time wasting, "just do it if you have loads 
of time to throw out the window" kind of project, because the cost of ethernet 
NIC's is extremely low these days.

-- 
Paulo Marques - www.grupopie.com

"In a world without walls and fences who needs windows and gates?"

Re: transferring data through the sound card

[Pavel Machek]

Hi!

>  how is it possible to transfer data across two PC using the sound card.

It would be actually pretty nice project ;-). Its not at all easy.

I was able to transfer data using dtmf and dtmf decoder (PC beeper to
internal microphone of notebook), but with advanced software much
better speed should be possible.
								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]

Re: transferring data through the sound card

[Michael Clark]

On 02/21/04 07:46, Pavel Machek wrote:
> Hi!
> 
> 
>> how is it possible to transfer data across two PC using the sound card.
> 
> 
> It would be actually pretty nice project ;-). Its not at all easy.
> 
> I was able to transfer data using dtmf and dtmf decoder (PC beeper to
> internal microphone of notebook), but with advanced software much
> better speed should be possible.

I believe it's already being worked on (as a subset of what the
GNU radio project is doing - software modulation/demodulation -
just removing the requirement for down conversion):

   http://www.gnu.org/software/gnuradio/gnuradio.html

~mc