Looking for a 1-2Khz Siren detector circuit to light an LED

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Looking for a 1-2Khz Siren detector circuit to light an LED

Postby mramos1 » Thu Jul 06, 2006 3:11 pm

I have heard there is a unit that will detect fire and police and light an LED for deaf drives.. I have googled all over. Nothing. I think US sirens are in the 1-2Khz range.

Has anyone done anything like this or have a circuit similar. I want to mount a mic outside the car, and light an LED in the car, direction is not important.

I am weak in analog/filters. And I know some of you guys will spice it in seconds. I can get more details if needed. It would be nice it all discretes over
an op-amp as well, but begger can't be choosers.

Thanks.
mramos1
 
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Joined: Fri May 19, 2006 6:10 am
Location: Boynton Beach, Florida, USA


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