Another ECM8000 Question.

samsagaz · 23rd February 2007, 03:44 PM

After read a lot of posts still without lucky to get the ECM8000 working with my PC

All that i have are the following...

EMC8000
SoundBlaster X-FI
UB802
Multimeter

I have prolbems to calibrate the MIC+UB802

can someone help me?

i try with ARTA and Speaker workshop. both need to configure it in diferent ways.

Svein_B · 23rd February 2007, 04:22 PM

If, by calibrate you mean exact dB sound pressure level, I guess it is a little complicated. You probably need a reference SPL meter for that.

The following is how I use ARTA, without considering absolute levels:

Start ARTA and run single frequency or pink noise and adjust the soundcard output and your amp to a suitable sound level. The level being either a subjective suitable acoustic level, or measure the AC at the speaker at eg. 1V or 2,83V (=loud!).

Then set up the mic+preamp. Run calibration, or go direct to Imp, and start the the generator/measurement. Adjust mic preamp and Windows recording volume control so you get a level at about 0 dB, or a little below (to avoid A/D overload).

SveinB.

samsagaz · 23rd February 2007, 04:30 PM

damn

i really would like to get the exact DB preassure, i want to measure and compare like 30 diferents drivers

owdi · 23rd February 2007, 05:01 PM

That will be hard to do, even with an SPL meter. Personally I think exact db levels are not nearly as important as relative db levels. So long as you keep the mic a constant distance and voltage, you can compare SPL levels.

Oh yeah, and I couldn't get the calibration to work either. When I pressed the button, there was no sound, so the mic did not record anything.

Dan

samsagaz · 23rd February 2007, 07:07 PM

ok.

will try to calibrate it, will check how much is an SPL meter.

Svein_B · 23rd February 2007, 07:27 PM

How about an "inverse calibration".
Use a speaker with a known SPL at a given frequency at 2.83V.
If we can use 500Hz for the calibration it should fit directly into the ARTA calibration HMI. Then fine-tune by using time-gated measurements to elliminate room influence.

Might be just as good as a cheap SPL meter ???

SveinB.

ente · 23rd February 2007, 08:24 PM

Hi samsagaz,

please check the ARTA-compendium in spanish language.

http://www.fesb.hr/~mateljan/arta/Ap....00%20_ES1.pdf

You will find some diy-methods for calibration. Not as reliable as with a 1000$ B&K calibrator but it works.

Regards
Heinrich

samsagaz · 23rd February 2007, 09:28 PM

Thanks

samsagaz · 9th March 2007, 05:14 PM

and if i want to get REAL measurement, (dont care too much abt the budget), exist some tools to do that?

ente · 9th March 2007, 08:56 PM

.. if you want real (=calibrated) measurements you need professional calibrated equipment.

A cheap soundcard and a cheap microphone is not the right basis for such kind of requirements.

Here you will find whatever is needed:
http://www.sinusmess.de/e/index.htm

As you mentioned: dont take care about the budget

Regards
Heinrich

23rd February 2007, 03:44 PM	#1
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	Another ECM8000 Question. After read a lot of posts still without lucky to get the ECM8000 working with my PC All that i have are the following... EMC8000 SoundBlaster X-FI UB802 Multimeter I have prolbems to calibrate the MIC+UB802 can someone help me? i try with ARTA and Speaker workshop. both need to configure it in diferent ways.

23rd February 2007, 08:24 PM	#7
ente diyAudio Member Join Date: Aug 2004 Location: NNW of Rome	Calibration Hi samsagaz, please check the ARTA-compendium in spanish language. http://www.fesb.hr/~mateljan/arta/Ap....00%20_ES1.pdf You will find some diy-methods for calibration. Not as reliable as with a 1000$ B&K calibrator but it works. Regards Heinrich

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ECM8000 Microphone	Twisted85	Multi-Way	47	23rd March 2010 11:03 AM
Behringer ECM8000 question?	Here-I-Come	Everything Else	2	9th October 2008 05:18 PM
Behringer ECM8000 mic	ShinOBIWAN	Swap Meet	2	10th March 2007 03:46 PM
WTB: ecm8000 mic	sqlkev	Swap Meet	1	2nd March 2006 03:17 AM
Behringer ECM8000 interface	maylar	Solid State	1	13th March 2004 05:17 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

23rd February 2007, 04:22 PM	#2
Svein_B diyAudio Member Join Date: Oct 2005	If, by calibrate you mean exact dB sound pressure level, I guess it is a little complicated. You probably need a reference SPL meter for that. The following is how I use ARTA, without considering absolute levels: Start ARTA and run single frequency or pink noise and adjust the soundcard output and your amp to a suitable sound level. The level being either a subjective suitable acoustic level, or measure the AC at the speaker at eg. 1V or 2,83V (=loud!). Then set up the mic+preamp. Run calibration, or go direct to Imp, and start the the generator/measurement. Adjust mic preamp and Windows recording volume control so you get a level at about 0 dB, or a little below (to avoid A/D overload). SveinB.

23rd February 2007, 04:30 PM	#3
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	damn i really would like to get the exact DB preassure, i want to measure and compare like 30 diferents drivers

23rd February 2007, 05:01 PM	#4
owdi diyAudio Member Join Date: Sep 2003 Location: Bellevue, WA	That will be hard to do, even with an SPL meter. Personally I think exact db levels are not nearly as important as relative db levels. So long as you keep the mic a constant distance and voltage, you can compare SPL levels. Oh yeah, and I couldn't get the calibration to work either. When I pressed the button, there was no sound, so the mic did not record anything. Dan

23rd February 2007, 07:07 PM	#5
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	ok. will try to calibrate it, will check how much is an SPL meter.

23rd February 2007, 07:27 PM	#6
Svein_B diyAudio Member Join Date: Oct 2005	How about an "inverse calibration". Use a speaker with a known SPL at a given frequency at 2.83V. If we can use 500Hz for the calibration it should fit directly into the ARTA calibration HMI. Then fine-tune by using time-gated measurements to elliminate room influence. Might be just as good as a cheap SPL meter ??? SveinB.

23rd February 2007, 09:28 PM	#8
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	Thanks

9th March 2007, 05:14 PM	#9
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	and if i want to get REAL measurement, (dont care too much abt the budget), exist some tools to do that?

9th March 2007, 08:56 PM	#10
ente diyAudio Member Join Date: Aug 2004 Location: NNW of Rome	.. if you want real (=calibrated) measurements you need professional calibrated equipment. A cheap soundcard and a cheap microphone is not the right basis for such kind of requirements. Here you will find whatever is needed: http://www.sinusmess.de/e/index.htm As you mentioned: dont take care about the budget Regards Heinrich

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)