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I'm looking for a computer-based RTA app that I can use with my Behringer mike and project the frequency curve through a USB connection to my plasma TV between my speakers. It would be neat to be able to make adjustments to my subs and have the results projected in real time where I can easily see them without having to run back and forth.
Thanks.
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I downloaded a free rta on my iphone...havent usedit though
I downloaded a free rta on my iphone...havent usedit though
Well, this might be harder than I thought. I appreciate the inputs.
XTZ has a product just like you are talking about, but it already has microphone and USB hookup.
Not to throw cold water on your idea, but noise-based RTA requires huge amounts of time to integrate the detected signal in order to be accurate.
The swept-filter based designs have, at best,marginal accuracy below 100hz.
I designed and built an audio analyzer in 1981 (a fixed filter type), participated in the design of another audio unit in 1985 (a swept filter type), and a re-design of another swept-filter type analyzer in 1998 (for vibration analysis down to 5hz and up to 22G).
I personally use the one from the 1985 project, but I realize the shortcomings of its design and how to interpret what it tells me.
The other major problem is that EQ cannot 'fix' a response problem in the time domain. It may measure flat, but it won't sound right.
I recommend treating the room first, then applying EQ. Note the amount of EQ to make it measure flat, them reduce the amount of EQ in each band by about half. IE: If you need a narrow notch at 71hz (8' ceiling) that requires an 8dB cut, try reducing the cut to 4dB. I always use tuned and damped 1/4W absorbers first (made out of a $6 piece of 8"x48" Sonotube and damped with fiberfill), and only then do I use a parametric EQ.
I recently came across Baudline.Defiantly worth consideration, only caveat is it only runs in Linux, FreeBSD, Mac OS X, or Solaris operating system
Not really that big of deal burn a "Live Distribution" like Ubuntu to a flash drive with "persistence" and install Baudline. Boot from the flash and run.
Edits: 06/13/12 06/13/12
You can take a look at Real EQ Wizard, aka REW, at Home Theatre Shack.
It is a free download to members of the Home Theatre Shack. ( its free to register as a member )
You don't mention if you have any other hardware to connect your mic to your computer, more than likely you will need some.
I don't know what it will take to get the information displayed from your computer to your plasmas USB input.
I like the Omni Mic Precision Measuring System.
It is a USB based connection to your computer, but I don't know if your plasma has the capability to use it.
It may be easier to pick up a tablet with wi-fi to read the RTA display remotely.
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