Originally Posted by markus767
That's not how it works. First there are numerous compression algorithms with numerous settings that influence the outcome. You can't just generally EQ something from which you don't know how it was recorded, processed and encoded.
"clarity and crispness is in the range above 4kHz" etc.pp. are just general guidelines in production but it has no value for reproduction. As Roger said, if EQ could generally improve lossy encodings then it would be part of the decoder but it isn't. It's not just an oversight. EQ can't bring back information that was lost during the encoding process.
compressed audio is a chaotic mess...you got dolby digital, dts, ---dts sounding better, with dolby digital cutting off frequencies losing alot of what is in the original uncompressed audio. In the home theater geeks episode 195 (20-30 minutes in, actually listen to the whole netcast)...listen to brian mccarty about the 400 sound engineers A/Bing dolby digital and dts at the hitchcock theater in universal studios in california. He talks about how the equalization all started 40 years ago and how they are trying to change or remove it completely like a bad habit.
then you have videos ripped from bluray and other media compressed again into another format for internet streaming...algorithms processed over other algorithms - lowering the quality of the audio
The AES is pushing toward a new standard for audio...flat at all frequencies, no equalization, uncompressed audio, same volume level.
we can't bring back the original information but with the eq settings we can make it TOLERABLE at least.
The settings are just for the low quality movies you find on streaming websites, the ones with ads, or other obvious low quality vids that arent on original media like bluray or game consoles
they are general setting used in film production, tips on how to rescue bad recordings of audio when retakes cannot be redone and the sound mixer has no choice but to equalize.
as recommended by brian mccarty, chair of the AES technical committee - flat, no equalization, regardless of room (size, shape or acoustics)