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Computer based RTAs

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Topic review
   

Expand view Topic review: Computer based RTAs

by JeremyC » Thu Jan 26, 2006 9:31 pm

An RTA is a Real-Time Analyzer. Car and Home audio people use them to measure the way sound waves are affected by a room, or the interior of a car. This measurment alows us to adjust for any peaks and dips in the sound waves giving us a flat responce. In other words, it alows our stereos to replay the music the way the author intended it to be heard.

You can also use it to set your x over points and slope, help you to decide what size sub enclosure to use in a car, and so on.

http://www.ehow.com/how_8447_real-time-analyzer.html

That is a real basic rundown of how to scan your car. Its basically the same thing the newer Eclipse and Alpine decks do, but they aren't as acurate, or detailed.

by Darthness » Mon Jan 23, 2006 3:42 am

what exactly is "Computer based RTAs"... or hell.. RTA's.

by JeremyC » Mon Jan 23, 2006 12:07 am

William from NOLA wrote:I don't know if you have a Guitar Center around you, but 9 times out of 10, you can haggle them down.
Yeah I kinda do, but its on base and their prices are way to high. Pluss they don't have much of a selection. They do have some car audio stuff, 95% of it is rockwood / pyle / and so on. They did have a JL 10W3 V1. I asked about a price and they told me all the lower the could go was 180. It was hard not to laugh in the guys face. Especially when the 10W3V2 is only around 160

by William from NOLA » Sun Jan 22, 2006 11:12 pm

looks good. DBX makes some good stuff. I have a freakin awesome compressor from them.

I don't know if you have a Guitar Center around you, but 9 times out of 10, you can haggle them down.

by JeremyC » Sun Jan 22, 2006 1:18 pm

Well this is what I did.

http://www.jr.com/JRProductPage.process?Product=3731104

http://www.zzounds.com/item--DBXRTAM

http://www.zzounds.com/item--MUP7311

and some wires

I will let you all know how it works come next week or so.

by JeremyC » Sat Jan 21, 2006 11:07 pm

Out of the mics you listed earthworks has a couple of measurment mics (the cheapest is about $600 bucks.)

I did find a few others that will work. What do you think about these?

http://www.samsontech.com/products/prod ... &brandID=2

http://www.zzounds.com/item--AUDTR40

The second is more than I want to spend, but if I can find it cheaper I might

by JeremyC » Sat Jan 21, 2006 9:48 pm

I just opened it up. It lets you do a mic cal and save it to file. That way you can load it when ever you need to.

by William from NOLA » Sat Jan 21, 2006 9:21 pm

I know the TrueAudio RTA one does. But I think it is for specific microphones... I don't remember now. I can play with it tomorrow night and give you some more info.

by JeremyC » Sat Jan 21, 2006 9:19 pm

William from NOLA wrote:Oh, another thing is calibration. You will want the response curve of a microphone. I don't believe there are many mics with a flat curve at all frequencies (20-20k Hz).
Yeah I am pretty sure all the programs I listed have a mic / soundcard calibration.

by William from NOLA » Sat Jan 21, 2006 9:16 pm

Oh, another thing is calibration. You will want the response curve of a microphone. I don't believe there are many mics with a flat curve at all frequencies (20-20k Hz).

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