Re: [LCtalk] Sound to light with Lanbox

[Fokko van Duin]

At 07:52 +0000 05-12-2006, Jason Brameld wrote:
> One feature common on several lighting desks, is the ability to 
> connect an audio feed and use this for various lighting effects such 
> as using the bass to trigger steps in a chase, or using the audio 
> signal to generate a 'sound to light' pattern with different states 
> being triggered on different frequency bands within the audio.

In general this does not work well, as most music is compressed, so 
triggers appear more or less random. You need a good audio analyze 
program in order to get decent results.


> Is it possible to achieve the same thing with a LANbox (LCX)?

Only if you have a detection system (hardware/software), as you can 
use a analog input to trigger your chase steps. Also if you can 
generate a MIDI clock (quarter beat), the chase can trigger on it.


> In the meantime, is there another way of doing it?  I don't have any 
> other show software at present but would consider a utility of some 
> sort if it could do it.  I am particularly interested in doing a 
> bass chase for a forth coming show.

You could consider MAX/MSP, see http://www.cycling74.com/  If you 
know how the audio should be processed in DSP, MAX offers great 
possibilities.

Fokko van Duin,
CDS advanced technology bv,
http://www.lanbox.com/