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In Reply to: RE: Software -based Room EQ? posted by David Shapiro on May 16, 2008 at 09:42:11
Hi David,
Are you going to be using room correction for a two channel based system or more channels?
I don't have any specific software to recommend but would enjoy hearing about your trials / successes / failures if you attempt software based room correction. I am especially curious as you have invested much in high quality speakers and electronics.
How did you like the Tact 2.2 XP in terms of overall benefits and drawbacks?
A couple of years ago I set up room correction with a Linux box using Brutefir, and DRC. The system setup was not particularly easy, but I did get reasonably good results after much tweaking with the configuration files. Since then I replaced my sound card with one that doesn't have good support under Linux, and I bought a different house, and have not bothered reworking DRC.
One of the problems I ran into was that DRC doesn't really allow a manner of averaging for multiple measurement positions, so any strong corrections are only valid at a single listening position. In fact, high frequency corrections were only valid for a single position of my head. DRC does allow for configuring the strength of the corrections based on frequency. I found that low strength corrections or corrections below 200Hz improved the listening experience, and high strength corrections sucked the life out of the music.
Since then I haven't used digital room correction for time and phase, but I have been using digital equalization for taming some room nodes. Some of the packages I have used have been the Thuneau Allocator (useful if you want to run a digital crossover between mains and subs), and the Waves Paraqraphic Equalizer, which is a decent quality parametric equalizer.
However, I have recently replaced my speaker system with a higher quality pair of Avalon speakers. I am currently not running any digital EQ nor digital crossover nor subs because my first effort resulted in some negative artifacts in the upper midrange. I will probably get back to it this week and try again.
Do you have a decent measurement mic and preamp? If so, I would recommend buying a software package such as True RTA or ETF for visual feedback of what is happening at your speakers and listening position.
Alan
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