REW microphone calibration

[@denizenofclownworld4853]

Thank you for making this video. I've been all over trying to find a way to do this.

[@RobertRafai]

This video help me a lot, I got mine microphone with Panasonic WM-61B102B capsule which is by default very flat and sometimes used in other testing microphones, then I used my Umik to calibrate that WM-61B. Now I have 2 very good microphones (both calibrated). Thank you for this video.

[@gvybin]

You are welcome. Was there a big difference between the calibrated UMIK and your Panasonic to begin with? And if in what frequency range ?

[@RobertRafai]

@@gvybin I try to measure twice, not in perfect conditions, I still need to move everything in my big living room and make measurement there. But like this is 99% same as Umik, I think it's possible to make almost identical mic calibration. That depend on quality of your sound card (which can be calibrated too). But like this, it's very, very usable, much better than non calibrated. I try already few mic capsules but for now WM-61 give excellent results.

[@mannixita]

Great video, thanks a lot. Will save me a lot of time!

[@АлександрМедведев-р4ь]

Все получилось идеально! СУПЕР! Огромное спасибо!

[@gvybin]

Пожалуйста, я рад, что смог помочь

[@azdonw]

Why does the new calibration file have dB values that are positive numbers when the UMIC1 file has negative dB numbers?

[@vmd1293]

I'm trying to use the Addyssey mic with rew to do some basic room measurement. My measuring setup chain is Audyssey mic -> soundblasterx g6 usb soundcard -> pc -> denon x3700h. When I connect the Audyssey mic to the soundblasterx soundcard, the mic doesn't seem to pick up any sound. Is it because the mic is mono and the mic port on the sound card is stereo? Is there a solution for this?

[@craigelliott6158]

Thank you for doing this. Can I suggest your content will be better if you use the english language settings in Windows for english language videos. It was hard to follow, espectially since windows version has changed.

[@dbaldy944]

What if i have a used Umik1 but the serial number is faded so i cannot access the calibration file? do i need a different calibrated Umik1 to create a calibration file for my used Umik1?

[@gvybin]

It happens often that the SN is faded on the sticker of a UMIK1. You can also find the SN on the side of the packaging box of your UMIK1 if you still have it around. If you bought your UMIK1 from miniDSP, they may be able to recover the SN in their database. If none of the above helps you recover the SN, you now have an uncalibrated UMIK1. You can use my method using some one elses UMIK1 with calibration file to make your own calibration file.

[@johnviera3884]

Ok. Thanks. I’ll just keep using my un calibrated Parts Express microphone. The measurements sounds accurate. One day maybe I’ll get a UMIK

[@LaFuerzaLara]

i dont understand how these measurement readings work. my microphone volume is all the way off and im still getting frequency graph readings. if i turn up my mic volume it starts to feedback. ive watched lots of videos but seems confusing. ive copied every settings from multiple videos and still the same happens

[@bertanstr]

I have a Anthem mrx510 reciever and the .cal-file for the mic is enqrypted so I cant use it in REW. If I first make a calibration of my soundsystem and then make masurement in REW Can I use that result instead of compare with a calibrated microphone?

[@gvybin]

Hi, I have no knowledge about the anthem system however... I believe the anthem arc-1 microphone is a USB microphone ( that is good) and you are right, there is no way in decrypting the calibration file. I understand that anthem is also not willing to share the calibration information of their mics in a "calibration curve", so here you are. You have a quality measuring mic without the calibration file. First, As I said in the video. I am convinced you can perfectly use the arc-1 uncalibrated with rew between 20Hz upto to around 7kHz. It may even be good further. Second, The best way is trying to get hold on a calibrated umic and use my procedure. To answer your question. I don't think it is a good idea to calibrate your system with anthem ( multi mike position ) and then assume you have a flat curve and use the measurement in REW with the arc-1 to calibrate it. All frequencies in a room above 7 to 10khz are so dependant on the interaction of the beam patterns of different speakers and reflections that cancelation may occur dependant on exact mic positions. However, and I don't know the anthem software, can you do a close mic ( 0.5m) sweep of 1 speaker (placed around 1m above the floor and away from walls) with the calibrated arc-1 in the anthem software ? (close mic measurement means you have no roomreflections in the high frequencies) Then do the same sweep at the same level (75dB) with REW and the uncalibrated arc-1 And then compare the 2 graphs to give you an idea how far off the 2 graphs are from say 5khz-20khz. chances are they will be pretty similar, but at least you know and you can even make some calibration file yourself and test it again.

[@kewlbug]

I just figured this out today, but I didn't realize I did the arithmetic backwards until I saw this

[@wilhelmniemand9534]

Anyone have a calibration file for the Behringer C-1U microphone?

[@johnviera3884]

0:52 wtf !! c’mon man!! if you have a calibrated microphone you don’t need the other microphone !!!! The whole point is that we already have a good microphone and we can’t afford to buy a calibrated microphone.

[@johnviera3884]

You need a calibrated microphone. Lol Bro!

[@gvybin]

Hi John. I explain in my video that you need the use of a calibrated mic ( in my case UMIK-1) to be able to calibrate another microphone. This is also very clearly stated in the text that comes with my video. The point is, on the internet I have seen videos that claim that the use of a cheap ( audyssey or YPAO) microphone that comes with your receiver is not acurate enough to be used with REW. Well those microphones are good, after making a calibration file for them. This video explains how you can make a calibration file yourself. But more important : This video also shows that even uncalibrated, these microphones are accurate enough for all measurements under 10kHz. And I know, a UMIK-1 doesn't cost that much, but some people (hobbyists) may want to experiment with REW, without investing in a calibrated microphone. This video may give them a guideline of what to expect.

[@johnviera3884]

I think someone should have a free calibrated microphone that they pass around the Audio community for this purpose

[@andr27]

so, skipping all that bs, the bottom line is to calibrate your room you need calibrated microphone.