Federal Communications Commission enforcement of the Commercial Advertisement Loudness Mitigation Act, which requires TV programming and ads to maintain a consistent volume, began on Thursday, following a yearlong grace period. "What this all means, going forward, is that TV viewers shouldn't experience what had become a common -- and very noisy -- source of consternation: that shocking rise in sound level when the first ad comes on after the action stops on a favorite show," writes Brian Steinberg.

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