1. A

    Acoustic Room calibration in a semi anechoic environment

    Hello everyone! My name is Victor, passionated about DYI loudspeakers and I started a side project related to acoustic. More specifically, I built a semi anechoic environment in Berlin. I have an engineering background by I've never learnt anything related to acoustic. It's why I created this...
  2. ColdComfort

    Studio monitor calibration - some questions

    Hi All- I'm new to REW, and have some questions. I'm helping a friend build out a mixing area around his DAW. He has a home studio that he periodically records bands performing in, and wants to improve his mixing by using studio monitors rather than headphones. I'd like for us to calibrate the...
  3. J

    Audyssey one

    Saw this on YouTube… Audyssey One Thoughts?
  4. A

    REW - Can’t save Soundcard Calibration (Directory not found)

    Hi everyone, I’m new to REW. I’m trying to calibrate my soundcard but I don’t seem to find a way to save the Cal File. Every time I try to save the Cal File I get the same message: “Directory not found”, even though the pathway seems to be correct. In fact, no pathway seems to work. I know...
  5. MTP

    Soundcard Loopback calibration question

    Hi there, Possibly a bit of a stupid question. Soundcard calibration to create soundcard calibration file. I'm currently using REW for the first time and I've done my research watching several YouTube videos and reading the relevant REW documentation but I cant find any reference to this...
  6. T

    Correct way to compare two microphones with REW

    Hello! I'm trying to calibrate two handheld recorders by comparing their frequency responses to UMIK-1's frequency response using REW. I have made 17 measurements in different places of the room facing different directions and now want to compare them. the measurements were done by putting...
  7. Todd Anderson

    The Wait is Over: The New Spears & Munsil Ultra HD Benchmark (2023) is Shipping Now!

    (May 16, 2023) Home theater fans, it's official., the official distributor of the all-new Spears & Munsil Ultra HD Benchmark (2023) disc set, is shipping the latest installment of a must-own calibration and evaluation tool. Years in the making, Stacey Spears and Don Munsil have...
  8. Todd Anderson

    Spears & Munsil Ultra HD Benchmark (2023) Calibration Disc Set Launches with Pre-Order!

    (April 7, 2023) The long-anticipated Spears & Munsil Ultra HD Benchmark (2023) calibration disc set is now available for pre-order. This notably large three-disc set can be reserved for $47.95 (regularly $59.94), with shipping tentatively set for May 15, 2023. The Ultra HD Benchmark (2023)...
  9. M

    Sound Card Calibration unable to reach required level

    Hi all, I am using the Mackie Onyx Producer 2-2 audio interface, however, when I try to calibrate my sound card with the loopback system, despite having the input level and output level all the way to the maximum, I cannot reach the required -12dbFS "In" level. It is also clipping/distorting at...
  10. C

    Absolute level cal with REW generator and SLM

    I'm having a tough time level calibrating my new Anthem AVR MRX 1140. I've run ARC Genesis, and I've used the internal noise generator and I've measured level with the REW sound level meter (SLM) with (batch) calibrated UMIK-1 mic, and with Radio Shack SLM. I think the Anthem is setting things...
  11. Wei Lin

    SPL-calibration using calibration file

    Hi, I would like to make a calibration file of my microphone (an USB mic, not UMIK-1). I wonder what kind of information needs to be provided in the calibration file in order to make REW treat the microphone as a SPL-calibrated one ? I tried the calibration file of UMIK-1, but REW doesn't...
  12. Todd Anderson

    Audyssey Releases New ACM1-X Calibrated Microphone as Add-On to Its MultEQ-X Room Correction App

    (March 16, 2022) Audyssey ended 2021 by launching its all-new MultEQ-X app for PCs (single license, $199), a software calibration solution that's used in conjunction with Audyssey MultEQ capable AV receivers and processors. MultEQ-X brings enthusiasts and integrators greater control over...
  13. K

    Windows 10 not outputting to all channels

    Hello all, I've looked through the available information here but have not found anything resembling my issue, so here it is. My AVR is connected to computer via HDMI and it sees 7.1 and I can hear test tones from each speaker when using windows sound settings. In Rew it will not play individual...
  14. M

    SPL reading calibration

    Hello Beginner question on SPL reading calibration referenced in the help file section 'Calibrating the SPL Reading'. Where should I position my SPL meter? Should it be at the same position as the position of the measurement mic (which is not a USB mic)? Thanks!
  15. B

    Calibrating DIY microphone

    Hello. I tried to search something, but I always end on how to apply mic calibration file. But I have a DIY microphone made from WM-61E (I don't know if they are original) and USB Omnitronic MM-2USB calibration microphone. I measured both mics and now I would like to make correction file for...
  16. Bryan Rason

    Calibration Of Soundcard

    Hello Everyone, I calibrated my sound card but the high end looks odd. Why wouldn’t it be a flat line? As you can see it’s affecting the room measurements in the opposite way. Plus phasing look weird.
  17. S

    Making a calibration file from a printed analysis

    My t.bone MM-1 mic was supplied with a printed frequency response graph: I have successfully turned it into a .csv file using Engauge Digitiser, however, I'm not sure that it's in the right format. The points were entered by hand (not placed on 1/12th octave points or anything) and values...
  18. T

    Impedance Calibration Test Jig - Release 5.20 Beta 38

    I apparently was looking at older documentation that gave the diagram for the test jig for using the sound card inputs and output to build an apparatus for testing driver impedance. I built one using a .1% 100Ω resistor. I also installed a switch to short across the resistor because it said that...
  19. S

    Help needed - Calibrating Audio Interface - feedback loop - Steinberg UR44C, Windows 8.1, REW 5.20

    Hi, I'm new to REW. I'm trying to follow the Soundcard Calibration instructions in the REW Guide and also this video from GIK Acoustics: As I understand it, I need to connect a cable directly from a LINE OUT to and LINE IN on my UR44C interface. I have tried all possible combinations, but...
  20. Chris Lineau

    REW SPL Meter Calibration against C- or A-Weighted SPL Meter

    Dear John, I want to use the REW SPL Meter. For the calibration I was just wondering whether I should set my external hardware SPL-Meter to C- or A weighting. When I hit on calibrate in the REW SPL-meter, the REW SPL-meter always jumps back to C-weighting, no matter if I have set A-weighting on...
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