[Lab] Controlling Light with Sound

[tonyelwood at telus.blackberry.net]

If you can mod or attach a sensor to the ventilator where it will not be seen you could use and rf transmitter or an infrared led to send a signal to the light controller to sync the lighting to it. 

Perhaps a piezoelectric sensor (old buzzer would do) stuck to the main body of the unit to pick up the vibration of the motor, transistor to amplify the small signal and drive an IR LED pointed up. Then the arduino could pick up the vibration of the unit by using an IR receiver diode. 
This would cut out the microphone which maybe would be triggered falsely if it is to be installed in a noisy installation. 

-Tony

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-----Original Message-----
From: The Big Plan - Chris B <tbp at ghostwise.com>
Sender: lab-bounces at artengine.ca
Date: Thu, 14 Mar 2013 16:11:51 
To: <lab at artengine.ca>
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

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