I want to take a Police Scanner, connect the headphone jack to a RaspberryPi, and capture the broadcasts that are received, so when the recording is played back it is just the transmissions, but maybe just about 5 seconds of gaps between the broadcast, saving this "recording" to a file that could be listened to at a latter time.

Has anyone set something up like this? I've found articles to connect the scanner's audio with the raspberrypi, but have not seen where it only "records" the transmissions.

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