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Compliments of GIK Acoustics. We would like to thank GIK Acoustics for preparing a very nice YouTube Tutorial on how to use REW. GIK tells us it is the first of several we can look forward to seeing. Thank you GIK!

 

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Compliments of GIK Acoustics. We would like to thank GIK Acoustics for preparing a very nice YouTube Tutorial on how to use REW. GIK tells us it is the first of several we can look forward to seeing. Thank you GIK!



Hi Sonnie, i agree thanks to GIK and yourself for posting this.

Hopefully there will be more tutorial videos, personally i would rather watch a video than read a book.

It would be great to watch tutorial videos, to what is best used for a certain application, and frequency range.

Keep it up
 

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A good mic is certainly desirable for best effect. That said, even something as simple as the Radio Shack meter, USB external sound card, and the correction file for the RS meter will still get you a long way. When you're looking for relative change, we can still see that even with the inconsistencies in that sort of setup.

..... and there will be more videos.

Bryan
 

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Re: REW YouTube Tutorial, loopback query

Thank you for the in-depth video! It definitely helped.

It's just one of those things, though--I am still not sure if I have set up my little 2-channel M-Audio Fast Track Audio Pro to successfully complete the soundcard calibration...

Was hoping you could help me kill the confusion about 1) what my soundcard and the line input/outputs should look like beforehand, and 2) how to set up the Preferences/Soundcard settings to successfully complete the calibration test in REW.

Channel 1 ('left') has a 1/4" jack looping back to the Channel 1 output. In effect, my left monitor speaker is now disconnected from the sound card, yes? I've run the 'Levels' test using Main Speaker to Check Level, and I've got my Channel 1 input level boosted to match the -12dB noise from the software, which is only coming out the right monitor speaker. Clicked ok finish.

Channel 2 ('right') has an XLR leading to my Beyerdynamic MM1 Electret, input level at 0, phantom power on.

Have also ticked the 'Use Loopback as a Timing Reference' box under 'Analysis'.

I'm pretty sure I'm supposed to set 'Input Channel' to Right and then hit Calibrate, but...I feel like I"m missing something! And the result back from the sine sweep test is always "You're about -34 dB short." Any help on this?

Much obliged if you could point me in the right direction elsewhere if not. Thank you much
 

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I'm not familiar with that. I spoke with Glenn and he had the same thought that I did - as long as it shows as a soundcard and is bi-directional, it should be fine.

Bryan
 

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I'm not familiar with that. I spoke with Glenn and he had the same thought that I did - as long as it shows as a soundcard and is bi-directional, it should be fine.

Bryan

Hi i am alsp interested about the Steinberg CI 1.

When you say bi - directional, please can you elabarate.

Thank you
 

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A bi-directional sound card simply means that it's capable of playback and recording at the same time.

Bryan
 

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What Bryan refers to as "bidirectional" is actually what is usually known as "full-duplex". Full duplex is the norm these days and it would be very unusual to find a sound card or audio interface that was not full duplex, so typically you don't have to worry about it.
 

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hi, need to know the difference between xtz room analyser and REW software. which one is more accurate and user-friendly. will appriciate comments.
 

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Accuracy of these systems can be dependent on outside dependencies such as hardware, product and subject familiarity and even weather/climate. I personally use a combination of REW for my main measurments and XTZ for validation if something does not look correct to me.
 

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Thank you, thank you, thank you!
I used to use REW a few years ago. This video will bring me back up to speed in no time, (well, about 9 minutes and 34 seconds!)
 

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Great video! However, there is a significant error at about 3:25 when it says to perform the measurement with the mic in an upright position, but neglects to mention that this requires a special calibration file for 90-degree orientation. Traditionally horizontal orientation has been used for frequency response measurements in minimally-reverberant free-field environments like we find with the typical home theater. It should be mentioned the our generic calibration files for the Behringer ECM8000 and Dayton EMM-6 mics are 0-degree files for horizontal orientation. More reading on mic orientation in the links found in this post.

Regards,
Wayne
 

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Hi Wayne

Here is a quote from the REW download link where they talk about mics and calibrations:

"For listening position measurements we recommend that the meter or mic be oriented vertically with a forward angle of about 10 - 20 degrees to capture a good mix of direct and reflected sound for 'room' measurements.

For near-field measurements we recommend a horizontal position to give the most accurate high frequency readings."

Since we're doing listening position testing, the vertical orientation is what is recommended.

Bryan
 
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