OOH, I’ve been waiting a long time for this question to come up!
The FCC introduced the CALM Act in 2010. It required commercials to match the “average volume” of the shows during which they’re playing. So commercials are intentionally designed to have all of their audio match the highest allowed volume.
In other words, all sounds, even what should be whisper, is balanced in a way that the waveform will all be at the maximum legal volume.
If you didn’t think advertisers were scum before, you should have a better understanding now.
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