sound activated relay?
I'm building a (non-PC) project, and I need a device that will close a circuit whenever the sound level reaches a certain intensity, and immediately close it when sound returns. This will be used to pulse a light to the beat of music, so it must be adjustable. Where could I find such a thing, or how might I go about building one?
right now, I'm thinking get a normal mic, and hook it up to a mosfet to amp it a bit. Then feed this thru a pot (sensitivity adjust) and into a solid state relay. The relay would then activate the circuit. Might this work?
|