Excellent advice. Using pulse-simple and the .monitor stream I was able to write a quick spectrum analyzer that does the trick: http://code.google.com/p/lightbeat/ Cheers, Mike On Fri, Jan 23, 2009 at 3:46 AM, Colin Guthrie <gmane at colin.guthr.ie> wrote: > 'Twas brillig, and Mike Axiak at 23/01/09 06:16 did gyre and gimble: >> I have an odd yet possibly fun question to ask. I have a few fun >> lights hooked up to my computer, and I've been wanting to write >> software that allows them to react to the sounds being played with my >> computer. >> >> A few years ago I wrote a plugin for xmms. Though now I have a better >> light system and since then I've gone on to use a larger variety of >> applications, so I'd like to solve this at the sound server level. I >> would need some access to the sound data that is playing, but wouldn't >> need to alter it in any way. >> >> Anyone have any pointers for me? > > Each output has a ".monitor" stream that allows you to sample what is > being played. > > It should be quite trivial to use this and just record from the > ".monitor" source and filter the PCM stream to detect the bass sounds > being played and take the appropriate action. > > Col > > > > > -- > > Colin Guthrie > gmane(at)colin.guthr.ie > http://colin.guthr.ie/ > > Day Job: > Tribalogic Limited [http://www.tribalogic.net/] > Open Source: > Mandriva Linux Contributor [http://www.mandriva.com/] > PulseAudio Hacker [http://www.pulseaudio.org/] > Trac Hacker [http://trac.edgewall.org/] > > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at mail.0pointer.de > https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss >
