From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261468AbUBUBYK (ORCPT ); Fri, 20 Feb 2004 20:24:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261469AbUBUBYK (ORCPT ); Fri, 20 Feb 2004 20:24:10 -0500 Received: from gort.metaparadigm.com ([203.117.131.12]:21429 "EHLO gort.metaparadigm.com") by vger.kernel.org with ESMTP id S261468AbUBUBYI (ORCPT ); Fri, 20 Feb 2004 20:24:08 -0500 Message-ID: <4036B33B.2000405@metaparadigm.com> Date: Sat, 21 Feb 2004 09:24:11 +0800 From: Michael Clark Organization: Metaparadigm Pte Ltd User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040122 Debian/1.6-1 X-Accept-Language: en MIME-Version: 1.0 To: Pavel Machek Cc: Nischal Saxena , linux-kernel@vger.kernel.org Subject: Re: transferring data through the sound card References: <200402161800.i1GI0ul15334@mail.da-iict.org> <20040220234601.GC32153@elf.ucw.cz> In-Reply-To: <20040220234601.GC32153@elf.ucw.cz> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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