MathAudio Room EQ for Foobar2000 - diyAudio
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Old 29th November 2013, 07:28 AM   #1
mtd is offline mtd  Moldova
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Default MathAudio Room EQ for Foobar2000

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Features:
  • Corrects deficiencies of room acoustics (multipoint compensation).
  • Corrects acoustic imperfections of speakers.
  • Optimized for maximum accuracy of the correction.
  • Corrects both amplitude and phase components of frequency response.
  • Quells resonance peaks of frequency response while leaving the deep notches to prevent large excursions of the speaker diaphragm. Avoids the muddy sound of conventional linearizing equalizers.
  • Manually adjustable level of compensation allows one to reach the maximum transparency of the sound.
  • Supports high sample rates.
  • Applies 64-bit signal path throughout.
  • Works with USB measurement microphones (e.g. MiniDSP UMIK-1) or standard measurement microphones (e.g. NADY CM100 or Dayton Audio EMM-6).
  • Supports microphone calibration files.
  • Applies a patented method of frequency response correction.
The plug-in is free.
Download: MATHAUDIO - Download
Any feedback is welcome.

Last edited by mtd; 29th November 2013 at 08:29 AM.
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Old 16th December 2013, 08:43 PM   #2
Pemo is offline Pemo  Mexico
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Well, I like it, very much. I've been using it for a week now.
Tested it with a microphone I have at hand, and the results were fantastic. So, I connected a very old (but functional) Realistic speakers just to see what happens, and WOW, these speakers are not so bad at all!!!
I'll invest in a better mic.

PEMO
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Old 17th December 2013, 12:35 PM   #3
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This sounds too good to be true, why is it free in foobar2000 and other formats require a purchase?

Any advise for using this software, for a bloke with a microphone and only a splash of technical know how?

Regards - LB
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Old 17th December 2013, 05:37 PM   #4
DRONE7 is offline DRONE7  New Zealand
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Quote:
Any advise for using this software
Instructions are on the link given in the first post of this thread.. right hand side ...but here they are for clarity...
MATHAUDIO - Why Room EQ?
Room Correction
Mic Mod
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Old 31st December 2013, 03:03 PM   #5
micfre is offline micfre  Canada
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Thanks for making this available to trial mtd. I've been experimenting with a few (digital) room correction options recently and was happy to try your software.

Pros: very approachable and easy to use. I like the fact that you can measure and re-measure quickly without any intermediate steps. Also, the "sliding curve" approach to level of EQ to apply is novel and intuitive. Compared to other EQ/DRC I have used, this does indeed preserve transients and shows little sign of pre-ringing as claimed on the web site.

Cons: In my situation, particular setup and my room the EQ balance seems to inflate the high mids (creating a sibilance problem) and it overcorrects the room mode issue I have at 40-42 Hz, resulting in weakish bass. (I am not attuned or addicted to the bass resonance; I cut it out with every other tool I have used as well.) I used the Neutral pre-fab curve and also created a house curve but couldn't fix the problems.

I am interested in the claims about phase correction. There's no feedback in the UI about how this is done, and the web site just references it in passing. What's going on behind the scenes mtd?

Again, thanks for making this available.
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Old 3rd January 2014, 08:16 AM   #6
mtd is offline mtd  Moldova
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Quote:
Originally Posted by micfre View Post
Thanks for making this available to trial mtd. I've been experimenting with a few (digital) room correction options recently and was happy to try your software.

Pros: very approachable and easy to use. I like the fact that you can measure and re-measure quickly without any intermediate steps. Also, the "sliding curve" approach to level of EQ to apply is novel and intuitive. Compared to other EQ/DRC I have used, this does indeed preserve transients and shows little sign of pre-ringing as claimed on the web site.

Cons: In my situation, particular setup and my room the EQ balance seems to inflate the high mids (creating a sibilance problem) and it overcorrects the room mode issue I have at 40-42 Hz, resulting in weakish bass. (I am not attuned or addicted to the bass resonance; I cut it out with every other tool I have used as well.) I used the Neutral pre-fab curve and also created a house curve but couldn't fix the problems.

I am interested in the claims about phase correction. There's no feedback in the UI about how this is done, and the web site just references it in passing. What's going on behind the scenes mtd?

Again, thanks for making this available.
The sibilance problem can be caused by a single-point measurement. Make no less than 5 measurements. The measurement locations must be uniformly distributed within the area of possible locations of the listener. The microphone should not be near reflective objects or sound absorbing upholstery. Do you set the vertical location of your measurement microphone? Do you use a calibration file for your measurement microphone?

You can use the custom target curve feature to add a low-frequency boost to the 'neutral' curve if you want to strengthen the bass. This feature allows you to partially compensate for the low-frequency resonance of your room or even leave it as is.

You may want to try a few different locations of the vertical slider. The 'dead-flat' frequency response is not an optimal solution for every room and every pair of speakers. Just trust your ears.

The process of the phase correction is similar to the process of the amplitude correction. The phase correction is applied to the portions of the spectrum where the amplitude correction is applied (i.e. it depends on the position of the vertical slider).
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