'Mondo's lay explanation of what peaking is consists of pointing at the red area to the right of the two volumeters' bobbing needles on the mixing board: "It's when the needles go into the red." The overall mission, apparently, is to keep the volume and resonance of a host's voice high enough to be stimulating but not so high that they exceed the capacities of an AM analog signal or basic radio receiver. One reason why callers' voices sound so much less rich and authoritative than hosts' voices on talk radio is that it is harder to keep telephone voices from peaking.

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