[Lab] Controlling Light with Sound

[Richard Guy Briggs]

On Thu, Mar 14, 2013 at 03:01:38PM -0700, klmckinnon at rogers.com wrote:
> Ah, nice thought.? My original thoughts were to be completely decoupled from
> a "Medical device", but since it is art...

Well, I think that is going to be the only way to completely decouple the
lighting from room background noise, unless of course this isn't a big issue,
or that interactivity with the public is actually a potentially interesting
part of the display.

It should be quite easy to calibrate for predictable operation.

>  From: Richard Guy Briggs <rgb at tricolour.net>
> To: klmckinnon at rogers.com 
> Cc: "lab at artengine.ca" <lab at artengine.ca> 
> Sent: Thursday, March 14, 2013 5:50 PM
> Subject: Re: [Lab] Controlling Light with Sound
>  
> 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:
> 
> ??? http://www.digikey.com/product-detail/en/MPVZ5010GW7U/MPVZ5010GW7U-ND/1168379
> ??? http://www.freescale.com/files/sensors/doc/data_sheet/MPVZ5010G.pdf
> 
> 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
> 
> --
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	slainte mhath, RGB

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Richard Guy Briggs               --  ~\    -- ~\            <hpv.tricolour.net>
<www.TriColour.net>                --  \___   o \@       @       Ride yer bike!
Ottawa, ON, CANADA                  --  Lo_>__M__\\/\%__\\/\%
Vote! -- <greenparty.ca>_____GTVS6#790__(*)__(*)________(*)(*)_________________