ATSC/A85, known in the US as the CALM Act, went into effect in December, 2011. It simply requires broadcasters to keep commercials no louder than the primary program, using a defined set of loudness (not volume) standards that are based on ITU-R BS.1771. Broadcasters who can demonstrate a financial hardship have one more year to come into full compliance.
So almost two months after the law took effect, how did NBC and Super Bowl XLVI do with the advertising? With probably half a Billion advertising dollars changing hands, you can bet there was some pressure on NBC to go light on the standards, but no one could keep a straight face and argue that either the network, its affiliates, or the advertisers themselves would face any financial disadvantage over a few thousand dollars worth of equipment and a little due diligence to keep the ads in line with the realtime programming.
So how did they do? Well, less than 15% of the first half ads and special segments were within +0.5dB of the game broadcast (the standard says <=0.1dB), the reference level having been pretty consistent throughout. The other 85%+ were a "little" over, to a full 4LK (4dB) louder than the game. Pretty disappointing considering NBC didn't even bother to norm their own stuff. My margin of error was probably no more than +/- 0.2dB, using the Nugen VisLM meters in Vegas, and very careful slicing of the program and ad segments for individual loudness scanning.
My source was 48KHz standard PCM mixdown from the broadcast, typical of a low-tech living room, recorded to 256Kbps AC3. More to come . . .
So almost two months after the law took effect, how did NBC and Super Bowl XLVI do with the advertising? With probably half a Billion advertising dollars changing hands, you can bet there was some pressure on NBC to go light on the standards, but no one could keep a straight face and argue that either the network, its affiliates, or the advertisers themselves would face any financial disadvantage over a few thousand dollars worth of equipment and a little due diligence to keep the ads in line with the realtime programming.
So how did they do? Well, less than 15% of the first half ads and special segments were within +0.5dB of the game broadcast (the standard says <=0.1dB), the reference level having been pretty consistent throughout. The other 85%+ were a "little" over, to a full 4LK (4dB) louder than the game. Pretty disappointing considering NBC didn't even bother to norm their own stuff. My margin of error was probably no more than +/- 0.2dB, using the Nugen VisLM meters in Vegas, and very careful slicing of the program and ad segments for individual loudness scanning.
My source was 48KHz standard PCM mixdown from the broadcast, typical of a low-tech living room, recorded to 256Kbps AC3. More to come . . .