Measurement Tools for Audio- BS or REAL

[boingoman]

As far as disagreeing with the EQ method, why do they put EQ on all the PRO STUDIO NEARFIELDS??

COOLCAT-

I'd guess that's for speaker correction only. That's what I was talking about when I mentioned establishing a baseline eq curve for my PA speakers. That curve is made with parametric eq and programmed into my eq. It never changes no matter where I bring my speakers. It is separate from any room corrections I might make.

I've got a story about details to post, but have to go to work.

edit- I realized you probably mean bass/treble controls on the actual monitors themselves. I have no clue.

 

[CoolCat]

well the polls closed.not much voting?
No votes against the measuring devices.

Ethan, BTW, The 1 hz freq. resolution was very interesting and sounds logical.
Boingoman, that sounds like a pretty useful procedure. What models and brands of measuring equipment do you use?

Also in your opinion,
3) are the results drastically different from Brand of ETFRTA to other brand??

To clarify the question's goal,
My POD, 2488DAW, DIgitech, Boss, Korg, Sequencer....all have Guitar Tuners and they all agree with each other...and my ear can tell if their out of tune.
So this would be HIGH CONFIDENCE DATA the Guitar Tuners work.

Just add another Question?
I was thinking of downloading the Pink Noise into my DAW as a stereo track.
This way I could just call up that "SONG ID" and play thru the Monitors.
Is this common?

 

[Ethan Winer]

Cat,

> are the results drastically different from Brand of ETFRTA to other brand?? <

In theory all room measurement software would be identical if they measure the same things to the same resolution. In practice there will be small differences due to each program using slightly different algorithms to process the measured signals and convert them to a visual graph.

I've been using ETF for a few years now, so there's no doubt in my mind that it gives credible results. I can measure a room, move the mike a little and see the change, add a few bass traps and see the change, and so forth. I haven't used every other program out there, but I've seen screen shots other people post so I know those are believable too. As long as the program can show ringing and can measure to better than 1/3 octave, that is. Which rules out the "trial" version of TrueRTA, and others like that.

--Ethan

 

[CoolCat]

Seeing a cancellation dip and slapping some auralex on the walls is not using "trust data". It's making an interpretation based on incomplete data. At least that's what it seems like to me.

I was re-reading this and this was a very profound statement...for this thread or my question. Interpretation based off incomplete data!

really hitting on what was a concern about "blindly" adding or moving
things around the room and spending limited resources.


So Level1....empty room, read up on Ethans site and place a few bass traps per recommendations. Run the Ringing/Clapping test...improvement easily quantifiable.

Level2- where to put the second delivery of traps and that Aurelx Foam you just spent $100 on (but really can't tell a difference if the foam is on the wall or laying on the floor! )

List grows:
1) EARS
2) RS DB meter
3) So measurement software using 1hz resolution 1/24th Octave or 1/12th,
is probably acceptable software. ETF $150 one example or the better version of TrueRTA.

4) other tools or tests???????

Again nothing much said of the microphones, measurement mic really or soundcard. So I interpret this as "no need to spend too much money on these items"?