WHITE PAPER: Guide to Audio Loudness

The rules regulating commercialaudio levels (the socalled “CALM Act”) went into effect six months ago. But as we all know, when Washington passes a law that’s not always the end of the issue. Such is the case with loudness. Broadcasters and cable operators knew the rules were coming for several years and throughout 2012, researched, purchased and installed the necessary technology to comply with the law, which requires the industry to process commercial audio levels according to the ATSC’s A/85 Recommended Practice. Some broadcasters and cable operators, however, were granted waivers based on financial hardship—waivers that can be renewed on an annual basis if the FCC sees fit.

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