java RTA program? care to have a look?

[req 5,000+ posts]

http://software.xfx.net/activex/dxvu/

so you can download it for free (have to deal with the little 'wait' thingie when it loads tho, $35 otherwise). now - i have yet to look into how it works with a mic, if you can use a good mic, how the soundcard effects its performance, but it might actually be worth looking into.

anyone have a mic and a few minutes to set it up in your car? maybe with a laptop?

This powerful real-time spectrum analyzer is a great example of what you can do with DXVU Meter.
The Spectrum Analyzer provides three rendering modes: line, bars and leds. You can customize the colors, set options usually found on professional spectrum analyzers such as logarithmic scales, hold peaks, DTMF detection and more.

Also, the horizontal scale (frequency) is dynamic so you can select a range of frequencies to analyze and even zoom to the range.

The library used to generate and render the Fast Fourier Transform is included with DXVU Meter and it's free so you can use it in all your applications.

Click to read more...

 

[XtrmAudioCncpts 10+ year member]

if you find someone with a mic tell us how it works. that looks kind of like the stuff that alpine uses when they set up their cars

 

[Tedro]

Im on it

 

[req 5,000+ posts]

sweet. let us know (pictures would be sweet)

 

[Shyne151 10+ year member]

i tried it... but the mic on my laptop sucks... read something like 126 on the meter thing.

 

[req 5,000+ posts]

i tried it... but the mic on my laptop sucks... read something like 126 on the meter thing.

did the RTA aspect work though? thats all i care about //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

hell - its free. go get your rig metered on a TL and compare!

 

[Tedro]

sorry, I got sidetracked by the 60sqft of Damplifier Pro that is in my doors now. Im on it now.

that is all

 

[Tedro]

nutz, I cant find my good RTA mic....

Fake edit: I cant even find my test CD's with pink noise... any of them

that is all

 

[CRXBMPN 5,000+ posts]

TTT //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[req 5,000+ posts]

oh cmon

please get that mic and test it out!!! i really wanna know! i could get a $30 "ok" mic and use my brothers laptop to do RTA and 'cheap' spl tests (for cabin peak testing and compairison basis)

if i had a lappy and a car with a system and a mic id test it myself. but i dont have any of those //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[nosaj070 10+ year member]

Good find, when I get home I'll give my radioshcak meter a shot with it, I'd imagine that could do a fine job for RTA.

 

[Tedro]

ehh, I found a mic and found a disk that had some pink noise on it and tried it out. It looks cool and works cool but it is just not detailed enough for me to get the results I wanted. I think with a better mic, external gain and a better sound card one might get closer to a good RTA. I am going to play with it a little more to see what else it can do for me. I was just unimpressed on the detail of the graphs and what it is able to analyze.

 

[req 5,000+ posts]

is it better than working by ear? ive found a better (read: awesome) solution for about $100, but if this works, why the hell not.

 

[Tedro]

is it better than working by ear? ive found a better (read: awesome) solution for about $100, but if this works, why the hell not.

Well Im sure nothing would be better at tuning YOUR system except for YOUR ear. but for that fine tuning I was looking forward on seeing if this program would give me results I was looking for to fine tume my system. I was not impressed enough that I did not need to do any tuning. I mean, It showed the whole spectrum and when I played pink noise tracks and even tone sweaps I got the identical results on the screen. In overall I could see the whole spectum but when I tried to zoom in on a smaller range of frequencys their was not enough detail for me to know what I was looking at. Like I would zoom in on 1k to 5k and it was just one large bar, one segment in the programs analysis of that frequency. Does that make sense?

 

[req 5,000+ posts]

hmm.

if you did a sweep, you should have saw everything flat cept for a LARGE hump like a wave gradually go across the spectrum. did you try and turn the volume of the setup down? maybe the diaphragm of the mic was being flopped around too much for it to read correctly?

did you play single like 1000hz tone for 20 seconds to see if the program registered it? because if a 'hump' at 1000hz shows up slowly falling off to 0db on the rest of the spectrum occurs, then you know the program works.