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Old 16th October 2012, 06:53 AM   #1
diyAudio Member
Join Date: Oct 2012
Default Inverting a speaker for 'alternative' purposes

I'm a newbie to these things, and just wanted some feedback on how viable the following is. It's ok to laugh as well

There are rooms in my house facing a busy street / neigbour's barking dogs etc that I wish to sound-attenuate. Before going for the obvious construction materials based solutions, I wanted to see other options. Now surface transducers can turn your window / door into a speaker. It's also possible to reverse the transducer to make it a microphone. I've ordered some of the auio exciters to play with, but while they are in transit, how viable do you think the idea to turn your window / door into a recording surface with a reversed surface transducer is in terms of capturing sound and thus attenuating it? As it's not my field, clearly there are things I'm missing out on, what are they...

All feedback much appreciated. Thanks.
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Old 16th October 2012, 11:25 AM   #2
diyAudio Member
Join Date: Oct 2001
Location: London, England
Due to the mass of the window/door I doubt this would be particularly effective as the signal would be massively down in amplitude.

I would think a small mic placed somewhere discrete like under a window frame/soffit would be more suitable, allowing you to use your window as the transducer to cancel some of the noise. moisture and temperatue would then be your enemies.

I leave the signal generation issue to others.

Real Engineers do it on a budget.....
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