Anyone using these programs?. I have the Visual analyzer : http://www.sillanumsoft.org/download.htm
despite it is free, it is quite difficult to use...
And the true RTA... i have the free version, but it is not clear that i can test any audio device with this version.
Hi Arnyk!With VA analizer, the difficult part is to have a flow to make the measurements. There are some articles about calibration procedure that i could follow. But there is not a test device proceeding. ¿do you have one that works?
RTA programs are more for checking out and setting up rooms.
Hi!I think finally will get the True RTA software. It is quite good measuring noise from audio devices, and it is easy to use. The only doubt about this kind of programs is if i REALLY need white noise generator to perform an audio test of any piece of harware, or PINK noise is more useful. Besides, True RTA has a sweeping mode to measure the frequency response of the DUT.jay x
Besides i will get an AMPROBE AM 530 RMS multimeter to measure AC millivolts.jay x
You do not want a simple RTA program for measuring systems in rooms.
You need a two-channel transfer-function analyzer, which gives you phase response.
Without the phase response, you won't know what could be the cause of bumps or suck-outs in the amplitude response.
Depends what you want to measure. If you want to measure frequency response then you can use either white noise or a sweep.
Bear in mind that it has a frequency range of 45Hz to 400Hz. I would look for even a second hand but proper analogue audio/ac milivoltmeter if you are tight in budget.
Of course not! How many times in even the past few weeks have I recommended two-channel analysis programs like Holme Impulse and Room Eq Wizard? Why don't you agree with those posts of mine such as http://groupdiy.com/index.php?action=post;quote=811120;topic=64072.0#postmodify instead of being disagreable?
I'm just pointing out that you said, "RTA programs are more for checking out and setting up rooms. Other good freebies in that category are Holme Impulse and REW - Room Eq Wizard." The implication here is two-fold. One: RTA programs are useful for checking out and setting up rooms, which is false. Two, you mention those two programs in the same line as "RTA programs ..." and the reader might assume that those programs are indeed RTA programs.
RTA programs are useful for checking out and setting up rooms, which is false.
Please elaborate; I believe something is missing.
RTA programs are more for checking out and setting up rooms. Other good freebies in that category are Holme Impulse and REW - Room Eq Wizard.
You do not want a simple RTA program for measuring systems in rooms. You need a two-channel transfer-function analyzer, which gives you phase response. Without the phase response, you won't know what could be the cause of bumps or suck-outs in the amplitude response.
Measuring phase response in a room makes little sense since the response in a room above its Schroeder Frequency (above 100 Hz or so) is by definition a random field where phase and amplitude are random and only make sense when summed statistically.
Well Andy, your implications are your implications (much more so than mine) and your statements of fact, and also yours. I don't appreciate having false claims stuffed into my mouth.
Lets look at your alleged facts. Are RTA programs utterly and totally useless for checking out and setting up rooms? Can you find even one independent authority other than yourself to back that up?
I can find dozens of recent articles on the web describing how to use pink noise and a RTA for loudspeaker and room setup. This is not proof that it is the best way, but it is evidence that people are still doing it and getting what they find to be useful results.
Secondly, the implication that Holme Impulse and REW are the same is another one of your misunderstandings Andy, not anything I want to stand behind.
What I meant is that they serve the same basic purpose - acoustical measurements. And, I find your misinterpretation of what I said to be demeaning and insulting. It ignores the fact that my recommendations on this site have always been of REW and Holme Impulse. Until now I've avoided RTA/Pink noise measurements.
For everybody who might be confused, while Holme Impulse and REW can be used for setting up rooms and speakers, they are not RTA/pink noise programs and use more recent and effective technology. RTA programs and pink noise testing have been legacy technology for setting up rooms and speakers, and still work to some degree.
I mentioned Sam Berkow in another post. Do you know who he is?-a