duct_tape123 Posted October 29, 2009 Report Posted October 29, 2009 I was poking around on the web and found a program called TrueRTA. They offer a free version that only allows 1 octave steps, but I figured I'd give it a try. Now my question is, how accurate is this program? My graph came out alright(I guess, never played with this type of program before) for absolutely no EQ'ing. I just played with the settings on my headunit until I liked the sound then I ran the program. Here is the graph, tell me what you think. My system consists of a set of Power 6.5 components in the front doors, power 4x6 in the back doors, a pair of P1 10s down firing under the back seat, a Power1000, and a Pioneer 7000BT. The truck is a 2004 ext cab Silverado. EDIT: The microphone I was using was a piece of crap, so I don't how much that affects the graph.
fritosaregood Posted October 29, 2009 Report Posted October 29, 2009 So you had a microphone on your computer record it all? if so i wouldnt say its super right, maybe if it used a termlab type sensor seller feedback: http://www.stevemeadedesigns.com/board/ind...showtopic=61719 http://www.stevemeadedesigns.com/board/ind...showtopic=68281 build log: http://www.stevemeadedesigns.com/board/index.php?showtopic=44800 Gf's build: http://www.stevemeadedesigns.com/board/topic/54346-kickergirls-camaro-new-box-pg-5/#entry753970
duct_tape123 Posted October 29, 2009 Author Report Posted October 29, 2009 It was a labtec external microphone. I got it for free from newegg a while ago, so I don't know how good it is.
Neel Posted October 30, 2009 Report Posted October 30, 2009 You are going to want the get a better microphone..... here is a tutorial on Diyma that will help you... TrueRTA is very cool! http://www.diymobileaudio.com/forum/diyma-...a-100-dlls.html Too Much Stuff to list .
audiofanaticz Posted October 30, 2009 Report Posted October 30, 2009 True RTA is only as accurate as the mircrophone your using. It will never judge your SPL like a termlab because it is measuring audible sound, not pressure like the termlab. To give you an idea, how not accurate it is look at a Audio Control Meter. Ive messed with True RTA years ago just on my house stereo, and it said it was 144db :01nocomment8so: Not to mention that you can adjust its sensitivity. However it has a cool feature with built in tones you can play.
qu1cks1lver56 Posted October 30, 2009 Report Posted October 30, 2009 So you had a microphone on your computer record it all?if so i wouldnt say its super right, maybe if it used a termlab type sensor i dont know if a termlab type sensor would work for anything other than bass. you need a calibrated RTA mic for accurate RTA readings First Gen Xterra: Always changing DNX 690HD RF 360.3RF T3002RF T4004RF T10001bdSilver Flute 6.5"s Tang Band 1" TweetersSundown X18 in 7cubes net tuned to 32hz Trust me .25 Blows your Load.
duct_tape123 Posted October 30, 2009 Author Report Posted October 30, 2009 Would it be close enough for the RTA? I didn't plan on using it for the SPL feature. Any recommendations on a good cheap microphone? Also, how does the graph look for no eq'ing?
Neel Posted October 30, 2009 Report Posted October 30, 2009 good cheap microphone listed on thread i posted above, Get the 1/3 octave version of the program and get a good microphone and then it will be close to being an RTA. Too Much Stuff to list .
Bigg Boy Posted October 30, 2009 Report Posted October 30, 2009 I have the 1/24th octave, worth every penny, just make sure you calibrate it correctly. I use it daily in the car audio world, and pro audio world Dodge Magnum with custom 300c front end, laid out on air bags *4) 12" Cadence Daytona walled *1) AudioQue 20k *270a DC Power Alt (Dual coming soon)
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