Patent ID: 8155329

Claim:
A method for monitoring outside sound through a closed window, comprising: (a) providing a structure having a closeable window; (b) providing a device for monitoring outside sound through said window, said device including: a microphone for detecting the outside sound and generating an electronic signal representative thereof; a filter connected to said microphone, said filter filtering said electronic signal and outputting a filtered signal; a squelch circuit connected to said filter, said squelch circuit detecting a level of said filtered signal, and only passing said filtered signal if said level is above a threshold level; an amplifier connected to said squelch circuit, said amplifier amplifying said filtered signal passed by said squelch circuit; a speaker connected to said amplifier, said speaker converting said amplified filtered signal into sound; a housing which contains said filter, said squelch circuit, said amplifier, and said speaker; (c) positioning said microphone outside of said window; (d) positioning said housing inside of said window; (e) closing said window; and, (f) activating said device.