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Discussion Starter · #1 ·
Hi guys!

Sorry for the title, but i couldn't think of anything else.

I'm fairly new to REW and just started using it. I think it's great!

First i used my cheap large diaphram condenser microphone to do the measurements. It went great, even though the measurement wasn't really reliable. So a few weeks later i got the Behringer ECM8000 microphone(which most people here use i guess?), but now i get the message "Impulse peak is not where it should be, the measurement may have been corrupted. Check the impulse respone and the captured data plots.".

The measurement starts, everything looks good. But the 1M measurement takes about 8-10 seconds and only gets about 50-70% into the test. Then i get this message.

I searched this forum, but the problem seems to be a Mac issiue, and i use PC Windows XP.

Any solutions anywhere? I've spent the entire night yesterday to figure out the problem. But got nowhere.

Argh, i wish i could post the links to the pics and vid i got, but i'm a new member. :foottap:

/ Daniel
 

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Discussion Starter · #5 ·
Yes, i start of by setting my speakers at a good level. I've heard that 75 db is every day normal level, not too loud and not too low. So i did, and then i set my input level until i have about -18dbfs in the input, like it says in the help box.

Thank!
/Daniel
 

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Discussion Starter · #7 · (Edited)
But i used this card before(a couple of weeks ago) with the other ldc mice and that worked fine?

I just tried the subwoofer test signal, but still the same result.

Yes, the sanity check says "Level Ok -15,9db".

I will try that.

Thanks for your help!

Edit: Nope, still the same result with -12dbfs.

This is the vid i made:

no sound because i couldn't record the sound meanwhile i measured.

/ Daniel
 

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Discussion Starter · #9 ·
Hi again!

EDIT: That test in the vid was between 20 and 300 hz, that explains the start with the low output in the beginning.

I'm doing a test between 50 hz to 300 hz. I'm using Adam a5, and those speakers are not very good at producing low end, so i started at 50 hz. My measure screen limits are 20 hz to 300 hz.

Yeah, here it is:
http://img39.imageshack.us/img39/1111/mackieonyxsatellitecali.jpg

No problems what so ever.

Yes, i am using the ECM8000 calibration file.

I'm starting to think that this is a bug or some sort. Maybe colliding with another process that is making the program to act wierd. I've tried to reinstall REW and my soundcards latest drivers, but with no luck. I'm starting to think that i may have to format my computer, since the tests worked perfectly a couple of weeks ago.

/ Daniel
 

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Discussion Starter · #11 ·
Yeah, but that calibration was made before this happened, and i just tried to make another calibration. But the same thing happens here as with the mic calibration! :foottap:
"Impulse peak is not where it should be, the measurement may have been corrupted. Check the impulse respone and the captured data plots."
Now i'm really angry :yay:

Yeah, i've tried every length there is.

I tried to do the delete settings and shutdown, but the same thing happens.

I've tried to install REW in another map, but i have the same issue there.
Another thing might worth mentioning, is that recording in Cubase and other programs works fine!

/ Daniel
 

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Discussion Starter · #13 ·
Hi again!

The latest drivers to my sound card is very special, cause it automaticly detects the sample rate required. This has driven me insane and chose to use a older driver normally. But this driver does not send any audio signals to REW, so i have to use the latest driver. I can not turn the sample rate detection off.

I've just updated java, but still the same problem. :(

I can only find the "roomeq_wizard0.log.txt", and it says:

"2009-aug-20 01:47:27 roomeqwizard.RoomEQ_Wizard main
INFO: Room EQ Wizard started", which is not very usefull information.

I've also tried to use both 44.1k and 48k but the same thing applies. To manually change the sample rate, i have to get into cubase and change the sample rate in a project.(It's a pain, right?!). Also stuff like some windows sounds and stuff changes the sample rate. I don't know if this only applies on my Mackie Firewire interface, but i've asked some qualified people on how to fix it, but i got no answer.

/ Daniel
 

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Discussion Starter · #15 ·
Yeah, i've asked this question on two forums, and nobody except you has provided me with a few "checks". Thanks alot Brucek!

Since i really don't know what to do next, i might try to format the computer. I can't really use the inboard computer interface either, cause i don't own an external preamp. :(

I'm thinking about changing the card, but the hardware is so excellent, but the software is really .

Haha, yeah, i guess in this situation you might want a regular in board card, but i can't get mine to work :D I have never used it :)

If you think of something, please, do tell me! :)

/ Daniel
 

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Discussion Starter · #19 ·
Hi JohnM, thanks for your time!

Yes, the sweep sounds good in the speakers.

But i do not think the scope is correct. It doesn't look normal.



Zoomed in:



Does this indicate sample rate issues or buffer size? What i can understand is that the Sweep and the captured sound should be somewhat on the same position? Right?

I can not access the Windows Mixer window with my soundcard. All is controled via the interface knobs. But my sound and audio devices are set to the Mackie Onyx Satellite.

/ Daniel
 

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Discussion Starter · #21 ·
Oh my gash! ;D We have found the problem. :)

But i have no idea what's causing this problem. My buffer size is at 128, and my latency in cubase is not even noticeable.

So i guess there is nothing wrong with my computer, but my soundcard is ? :eek: Well, i already knew that, but any ideas on how i can fix this? Like i said, i had no problems with latency in cubase.

/ Daniel
 

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Discussion Starter · #28 ·
Well, i do not have any clipping in my mic pre. I monitor it very closely to make sure it was not clipping. The clipping must come from some elsewhere.

Yes brucek, i was using the subwoofer test signal, but i've also tried the full range speaker test signal, but with the same problem.

I am going to format my computer tomorrow, since i now can't even install the proper drivers for my sound card, which makes the card pretty useless at the momemt. I am pretty sure that the fault is in my sound card and not the program anymore. I'm also strongly thinking about buying a new sound card, since Mackies drivers are extremely unstable and unreliable.

I will get back to you with the results if the format worked or not!

Sorry for bad english at the moment, but i'm a little drunk. :)

Have a great evening(or whereever you come from :) )

/ Daniel
 
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