Quote:
Originally Posted by AidanLunn
I used to have one of these and I seem to remember reading that it was the side-effect of a in-built feature that somehow "enhanced" the audio in loud scenes (why?) but created this quiet whistling sound in quiet scenes.
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That sounds like a dynamic range compressor. Reducing the volume during loud passages to prevent driving weedy TV speakers into distortion, but increasing it during quiet passages and amplifying the inevitable noise pickup. And curious how it's always done in the name of "improvement". I suspect that if they went the other way, with an expander that turned loud passages
up and quiet ones
down, then they could claim that as an improvement over the original sound as well!
Broadcasters do actually do something kind of similar themselves, but rather more sophisticated, and without so much of the extraneous noise.