Lots of movies has this 30hz boom-boost and falls off below - question is, are they similar enough to allow for one simple predefined filter solution.
BassEQ with several filters for each channel is fine, and will give the best results. However, if I just want to watch a movie - NOW - this is not a practical solution. It takes to much time and effort to implement either you are doing it in dsp for playback or remastering the soundtrack.
Since many movies share similar frequency balance defects, one or a small selection of predefined filters could improve things a lot - actually improving the overall sound quality by magnitudes - and it would be easy to select if predefined in the bass system dsp.
A bass-system dsp with option for presets could be configured with a few filters, covering most of the movies:
1: Default - flat response (flat ref to chosen target).
2: ULF boost - +10dB < 25hz.
3: ULF boost + boomfix - +10dB < 25hz, -3dB at 30hz.
Generic BassEQ.jpg 88.19KB
When I want to watch SW-RO, I go to data-bass, observe the frequency spectrum chart, and choose preset #3. Done, start the movie.
This is something that could work for a lot of people.
For new readers:
Now, of course, the soundtrack should be played "as intended", but that will have to wait until they actually present a soundtrack with decent sound quality having reasonable full frequency range balance, and this will not happen until they install proper sound systems in their studios.
When "as intended" is boomy bass with lack of realism and dynamics and refinement there is huge potential for improvement, and if you really believe there is no significant difference to balanced, full frequency range sound, you are lucky because you can look forward to having a new experience for what sound reproduction actually can be like.