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In the Forum: Didital Things
In the Thread: Hypex for ULF?
Post Subject: DSP no panaceaPosted by rowuk on: 7/28/2017
You have to consider the latency in DSP ULF solutions (regardless of filter settings). It is considerable and if the rest of the system is phase aligned, there may be some problems in location of the ULF drivers.
 Paul S wrote:
Sounds like you have your system in your room the way you want it.  I am looking for a ULF solution that has some flexibility, something I can use in a different room later without starting over.  I've been thinking for some time about DSP for ULF.  It's no good hearing it in a studio, where the only "good" thing about the sound is that it is "integrated", top to bottom, and - of course -  the sound at shows and salons is all over the place.  Obviously, since drivers are not flat to 20 Hz, something needs to be done, and the usual approach involves  exponential power increase as the frequency drops, and moving things around.  ULF circuits add phase correction.  Room and system integration issues make the "simulations" and any attempts at build and play mere pipe dreams.  It is still unknown to me if "digital" ULF can be used in an otherwise-integrated, high-demands hi-fi.  Another "problem" is, most people who are OK with DSP for ULF either use it across the board, or they use streaming sources.  These are "interesting" times in hi-fi, for sure.


Best regards
Paul S

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