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Room EQ Wizard Tutorial
Munson, and reported in a paper entitled "Loudness, its definition, measurement and calculation" in the Journal of the Acoustic Society of America. In they created the first equal-loudness curves.
In this video we take you through downloading, installing, and using Room EQ Wizard. You will learn how to set up your microphone and calibrate your soundcard, as well as how to take a room test measurement. You will also learn how to set up the limits and viewing ranges for the frequency response graphs and we show you how to generate a waterfall graph.
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Octave smoothing and overlays are shown as well. Dirac Dirac is a sophisticated tool to calculate a very wide range of acoustical parameters from impulse response measurements of an enclosure. Through many years of development and customer feedback, Dirac has grown to support many different applications. Due to its user friendly interface it is suitable for field measurements, but it also contains many advanced features that make it useful in a laboratory or research setting.
To capture an impulse response, a stimulus signal is generated by Dirac or an external source. This stimulus signal is played in the enclosure through a sound source, and recorded through a microphone. All values above DR12 have generally a high dynamic quality. DR meter comes in two flavors, what they call an offline version pictured above and as a foobar component.
For those of you who are wondering what foobar is, checkout our Music Playback Software Comparison. If you do decide to download DT meter, we encourage you to sign up and support their campaign to end the loudness war.
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Room EQ Wizard, or REW, was one of the original room and loudspeaker measurement systems available to the home theater enthusiast. Actually, I find it much more intuitive than Omnimic, a costly alternative.
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- Room correction with REW (Room EQ Wizard) using parametric equalization (PEQ);
REW can help you figure out the best placement for speakers, listening position, and acoustic treatments. Figuring out how to use all of the functionality packed into REW can be a little tough at first, but there is a large online community to provide support. Like we said, once up and running, REW is a powerful piece of software. However, getting it up and running can be difficult, and results can be inaccurate depending on the quality of measurement equipment you are using. You will need to invest in a microphone, cables, tripod, and external soundcard external soundcard is optional.
You may also need something like the Nady SMPS-1X phantom power supply for the mic, depending on the functionality of the soundcard you purchase. If you are willing to spend some extra time during setup and invest in decent quality measurement gear, you will be rewarded.
Acoustic Measurement Primer
For people who want a more seamless experience, kits from Omnimic or XTZ review in progress come with everything you need and work right out of the box with little to no setup. This is the only program we know of that is designed to improve your critical listening abilities. Originally created to train Harman employees, it has been made available, for free, to the public. The program works by asking listeners to identify how a track has been manipulated.
For example, the image above-left shows a very basic Band ID exercise. The goal is to identify which of the two Eqs shown is being applied, number 1 or 2. The tests become increasingly difficult. Above-right is an image of the most difficult Band ID test the program has to offer.
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As you can tell, the tests become very difficult. There are a number of different training exercises, including reverb, coloration, and noise. If you become tired of the tracks that come with the software, you can even upload your own to demo. Download Here.
REW | Pearltrees
Have you ever made a change to your system and wondered if there was any actual change in the sound? This can be done with a mic to capture the actual sound output from your speakers, or using various other methods to capture the audio output from a device. Next, make the change in the system, and then record a compared track. The software compares the two tracks and extracts the difference.