StabMe

Thanks for the feedback. Doesn't DRC provide an ability to take several measurements to kinda smooth out the correction?

Flavio, Well, i do not mind having one sweet spot - in a driver's position As far as i understood, Dirac uses the first measurement as the main one and then adds the rest to smooth the result. Will taking a few measurements near the drivers position improve the result? I am talking about a box of about 50-60cm radius. And we are discussing a stereo version of Dirac, correct?

Hey Flavio, Thanks for taking time to answer my questions. Yeah, i've heard that Dirac is used in some of the luxury cars. So that is why i thought that it could be a good choice for my application. I think i can consider both stereo and Live version. In order to use a multichannel version i will have to install a Carptuter with Dirac Live installed on it and some audio interface to output those channels. But this is really cumbersome i think. I would like to try stereo version. To do that, i will need DDRC from miniDSP which i can install before crossovers and see how it does. Here is a simple diagram of how my system looks: My question is, though: Given that i use a stereo version of Dirac in a 3-way system plus a sub, how will Dirac compensate for the fact, that each speaker of this 3-way system is located at a different distance from a listener? So, basically, sound from no speaker comes at the same time with the other speakers. Does Dirac Stereo somehow compensate for that? I know, that in a 2-channel set-up it can set a delay and|or gain for one of the channels, but we have a pseudo 7 channel setup here running through a stereo. I can use a DSP inside the Audison BitOne which currently does the x-over - i can set up delays for each channels. I just thought that since delay and phase are closely related and Dirac somehow fixes phase anomalies (or does it?), i can switch off the time alignment function in the BitOne and allow Dirac do its magic. Another option is to time-align each speaker with the help of BitOne (using software like REW or Holmimpulse) and let the Dirac process the rest. Which is better?

That is good to know, bibo01, thanks for the heads up. So, has anyone been able to use DRC (Source Forge) and achieve results comparable with Dirac, Acourate or Audiolense?

garysi, To clear up some confusion: There is DRC, "a program used to generate correction filters for acoustic compensation of HiFi and audio systems in general, including listening room compensation.". It is hosted on Source Forge (an Open Source community resource) and thus is usually referred to as Source Forge DRC. Then there is Sound Forge (without DRC ), a program for editing audio for Windows. If we are talking about correction filters and taking care of room acoustics, i think we are talking Source Forge DRC, not Sound Forge I am sorry if i am stating the obvious.

There is a GUI for DRC called DRC Designer which makes measuring and creating filters easier. I could only get a nonsense effect from it when compared to what i get with Audiolense or Dirac. So if someone can try it and make a good comparison, that would be cool. This tool is discussed somewhat on other forums on the net. A quote from the website: Oh, and i think it is better to get a fixed version of DRC Designer. Here is why:

I bet the original poster meant Source Forge DRC and i would like to hear some comments and comparisons as well.

A caveat: i know that there is a multi-channel version of Dirac Live. But seems it seems that i am limited to a 2-channel version only due to the way my system is set up.

Hey! Been reading a lot on various DRC solutions and Dirac Live seems to be the most promising at this point. Especially for a guy like me, who does not have enough knowledge in the whole theory and just want a "system" to take care of the sound. Now, i am considering buying DDRC-22A with Dirac Live from miniDSP and i am going to install it in the car. In my car i have a 3-way front plus sub setup. The sound is extracted from the head unit via MOST->SPDIF converter (moBridge) and then goes to Audison BitOne. Here the signal is crossed over and fed into 4 different amplifiers. I have mid-bass drivers installed in doors mid-range and tweeters are in the bottom of a-pillars, the sub is in the trunk. The idea is to install the DDRC-22A in between moBridge and BitOne and run the correction. Now, the question is - will Dirac take care of the phase shifts that occur due to the distance difference between all the speakers? Although BitOne does provide an ability to do time-alignment of speakers, i couldn't get it perfect. So, what if i just turn that feature off in BitOne and hope that Dirac takes care of different timing? I tried Dirac on my home computer in the room with no treatment and i really love the results. The booming is gone, sound became precise and transparent. Transients are so much better. I really hope i can have this kind of a result in the car.