What is audio rew?

What is audio rew?

REW is free software for room acoustic measurement, loudspeaker measurement and audio device measurement. The audio measurement and analysis features of REW help you optimise the acoustics of your listening room, studio or home theater and find the best locations for your speakers, subwoofers and listening position.

How do you calibrate a room with a rew?

The initial steps required to make room measurements are:

  1. Choose the audio input and output.
  2. Calibrate the interface (not applicable when using a USB microphone)
  3. Check levels.
  4. Calibrate the SPL reading (not when using a USB microphone that has REW-compatible sensitivity cal data)

How is Rew time delay calculated?

Measure front left and right speakers[Top] Click on the “Measure” button (top left of the main window). Check the frequency sweep range and level. Set Timing (towards the top right of the window that pops up) to “Use acoustic timing reference.” Now run a levels check and then the measurement sweep.

How do you calibrate an EQ?

I recommend starting with 10-1000 and adjusting the volume until it sounds about as loud as you usually play music. Then go through the other test sounds adjusting the corresponding EQ sliders until they all sound equally as loud as the 1000 test sound.

How do you calibrate with pink noise?

Pink noise is a tone that consists of every frequency band at exactly the same level. This makes it the ideal tool for many types of acoustic measurements including speaker and room calibration. To calibrate your speakers, Turn the independent level controls on the back of each of your studio monitors all the way down.

What is the meaning of REW?


Acronym Definition
REW Remote Early Warning
REW Real Estate Withholding (taxes)
REW Radio Electronic Warfare
REW Recycle Water

How do you measure speaker delay?

Here is how you calculate group delay :

  1. Group delay is the negative of the derivative of the phase curve with respect to radian frequency.
  2. As you can see, there is a little button at the bottom, called GD.
  3. Slide around the cursor to see the exact value of the group delay at different frequency ratings.