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In Reply to: Re: vista time phase correct posted by tz7 on January 21, 2007 at 16:38:39:
Tz7:If you want to do DEQX level room/speaker correction you're going to need to either get into Acourate/BruteFir or Denis Sbragions DRC using one of many different convolvers.
You're also probably going to want to go the multi-amp route doing your crossovers in the digital domain to get into the league of the DEQX. You *can* correct a full range passive loudspeaker, but better results can be had with the DSP/active or even conventional active route. A good DSP based method for this is the Thunuea Allocator / Phase Arbitrator route. Even then, the DRC process is not intuitive or step by step, and requires a fair bit of know-how with measuring techniques, crossover design, and interpretation of measured results. There are things one can "tweak" along the way such as spline curves for response shaping, and different "strength" of DRC algorithms to choose from. It's really a science experiment more than a process you just "do" - it's a labor of love for sure!
Although there is a step-by-step manual available for the Sbragion approach, the end result has a lot to do with speaker placement, room geometry and treatments, and the users ability to take measurements, record sine sweeps, and perhaps most important, the ability to know when a good result is obtained! This is not really a good thing to apply "trial and error listening tests" to - you also need to be able to interpret the results both objectively and subjectively. Too much in either "direction", and you'll lose sight of what you are trying to accomplish.
This is what has me sort of luke-warm on the process. It's a powerful tool, but you need to know it's workings and limitations and stay within those confines.
The money you pay for the DEQX is not just for a piece of hardware - it's for a solution that just about anybody can set up. You don't need to be a speaker designer to set up a DEQX. I believe you do not need additional measuring software with the DEQX as well. Acourate "is" the measuring software and its very comprehensive, but you need BruteFir to implement it. Sbragions DRC requires third party measuring software, and convolver plugins to make the end product work. Both are very powerful in the right hands...
You do, however, have to have a fair bit of technical know-how to properly implement Acourate or Sbragion's DRC.
And no, Windows Vista will not come close to what these extremely powerful (but complex) solutions will do. Then again, in windows you basically put a mic in the room and click a checkmark in the "room correction" box! ;) What do you want for that kind of simplicity?
I think Windows DRC is akin to the kind of room correction / room setup solutions that many mid and hi-end hometheatre solutions have today. Great for calculating listener to speaker delays, and some minor equalisation, but not powerful enough to start correcting time-phase errors.
Cheers,
Presto
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Follow Ups
- Here's the deal TZ7... - Presto 17:07:47 01/21/07 (3)
- Re: Here's the deal TZ7... - tz7 19:23:53 01/21/07 (2)
- Re: Here's the deal TZ7... - Dawnrazor 22:16:57 01/21/07 (0)
- Re: Here's the deal TZ7... - Presto 21:10:27 01/21/07 (0)
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