[pulseaudio-discuss] Lights responding to bass/sounds?

[Mike Axiak]

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/
>
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