Talk:Expansion

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I'm removing the reference to squelch from the audio engineering reference. Analog audio expansion and squelch are separate concepts. An expansion circuit is typically a feed forward circuit, which means it uses the level of the input signal to determine the level of the output - it's continuous in nature. A squelch circuit uses a completely independent input (usually the strength of the received modulation source) to mute/un-mute the output, which is discreet in nature. --Babar77 (talk) 05:06, 31 October 2009 (UTC)