[Lab] Controlling Light with Sound

Richard Guy Briggs rgb at tricolour.net
Thu Mar 14 17:50:16 EDT 2013

On Thu, Mar 14, 2013 at 02:35:32PM -0700, klmckinnon at rogers.com wrote:
> first thought:? microphone with amplifier into a:d input with a PWM output to
> an LED or possibly to a triac for a incandescent light.? 
> thoughts - would you have need of filtering for false triggering from other
> noises
> could you latch on to an existing signal or source (since it is art and not
> true medical)

Actually, my first thought was a pressure sensor such as:


I'm looking at getting a couple of these myself for measuring depth in a rain
barrel using an Arduino.

> Ken
> ________________________________
>  From: The Big Plan - Chris B <tbp at ghostwise.com>
> To: lab at artengine.ca 
> Sent: Thursday, March 14, 2013 4:11 PM
> Subject: [Lab] Controlling Light with Sound
> Hi!
> Looking for some advice for an art installation. I'd like to have a light or set of lights respond to an auditory
> input. I'd like the lights to turn on in time with the sound of a ventilator (a medical one). So when the ventilator is
> not doing a breath, the lights would be off, but then when the ventilator starts doing a breath they would
> turn on for the duration of the breath. I'd like the lights to light up and dim gradually, not just on an off.
> What's a simple or best way to do this?
> Thanks!
> Chris

	slainte mhath, RGB

Richard Guy Briggs               --  ~\    -- ~\            <hpv.tricolour.net>
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