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Authentic police radio audio is rarely a single clear voice; it is a "mixed" soundscape composed of several distinct layers:
: The most recognizable element is the "squelch"—a brief burst of white noise that occurs when a radio's microphone is keyed or released. This static creates the "futzed" or garbled quality associated with field communications.
: These are numerical shorthands used for efficiency. Common examples include: 10-4 : Message received or acknowledged. 10-20 : Requesting or providing a location. Code 3 : An emergency response requiring lights and sirens.