What is REW Room EQ Wizard?
REW Room EQ Wizard, or simply REW, is a free software for room acoustic measurement, loudspeaker measurement and audio device measurement. It was developed by John Mulcahy, a software engineer and audio enthusiast from Ireland. REW is available for Windows, macOS and Linux operating systems.
REW can help you optimise the acoustics of your listening room, studio or home theater by providing you with various tools for generating audio test signals; measuring SPL and impedance; measuring frequency and impulse responses; measuring distortion; generating phase, group delay and spectral decay plots, waterfalls, spectrograms and energy-time curves; generating real time analyser (RTA) plots; calculating reverberation times; calculating Thiele-Small parameters; determining the frequencies and decay times of modal resonances; displaying equaliser responses and automatically adjusting the settings of parametric equalisers to counter the effects of room modes and adjust responses to match a target curve.
How to use REW Room EQ Wizard?
To use REW, you will need a computer with a sound card or audio interface, a microphone with a calibration file (such as the UMIK-1), a microphone stand, an audio cable and optionally a loopback adapter. You will also need to download and install REW from its official website.
Once you have installed REW, you can follow these basic steps to set up and use REW for acoustic measurement and analysis:
Select your sound card or audio interface as the input and output device in REW.
Load your microphone calibration file in REW.
Connect your microphone to the input of your sound card or audio interface.
Connect your speakers or headphones to the output of your sound card or audio interface.
If you have a loopback adapter, connect it between the output and input of your sound card or audio interface. This will allow REW to measure the latency and correct for it.
Place your microphone at your listening position or at the location where you want to measure the response of your speaker or subwoofer.
Select the type of measurement you want to perform in REW, such as SPL meter, RTA, frequency response, impulse response, etc.
Adjust the level of the test signal in REW so that it is loud enough but not clipping or distorting.
Start the measurement in REW and wait for it to finish.
Save the measurement data in REW as an mdat file.
Analyse the measurement data in REW using various graphs, plots and tools.
Repeat steps 6 to 11 for different microphone positions, speaker positions, listening positions or equaliser settings as needed.
Compare the measurements and find the best configuration for your room and system.
What are the benefits of using REW Room EQ Wizard?
Using REW can help you achieve better sound quality in your listening room, studio or home theater by allowing you to:
Identify and treat room acoustics problems such as reflections, reverberation, standing waves, comb filtering, etc.
Optimise the placement of your speakers, subwoofers and listening position for optimal frequency response, stereo imaging and soundstage.
Adjust the settings of your equaliser or digital signal processor (DSP) to correct for room modes, match a target curve or achieve a flat response.
Measure and analyse the performance of your speakers, subwoofers, amplifiers, DACs and other audio devices.
Learn more about the science and art of acoustics and audio engineering.
Where can I learn more about REW Room EQ Wizard?
If you want to learn more about REW, you can visit its official website, where you can find the latest version of the software, the help files, the revision history, the FAQ, the forum and other resources. You can also watch some video tutorials on YouTube or read some articles on various websites that explain how to use REW for different purposes and applications.
REW is a powerful and versatile software that can help you improve the sound quality of your listening room, studio or home theater. It is also a great tool for learning and experimenting with acoustics and audio. If you are interested in REW, you can download it for free from its official website and start using it today.
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