The current version is V5.20.13, revised 26th September 2022. If you are looking for V5.19 it is here
V5.19 cannot open V5.20 mdat files
If you find REW useful you can make a donation by clicking the button below. Many thanks
to those who have already donated, your generosity keeps REW development going and is greatly
The REW room acoustics software contains comprehensive help information. You can also view the help files
download the html files for offline viewing (11.4 MB) or download a
PDF copy (12.0 MB, Sep 2021, courtesy of Steve Bolser).
Online help for the current beta version can be found in the Beta help files.
The most up to date help files are those online and in the application itself, PDF files are snaphots of the help
on the date they were generated.
For additional tips and assistance in using the software visit the
AV NIRVANA REW forum.
Patrick Del Basso has generously provided a French translation of the help file (Jan 2022):
REWhelp-V5.20-fr.pdf (10.0 MB).
Johnson Chow of Initial Audio Concept has generously provided a Chinese translation of the help file (Oct 2021):
Linked below are a small selection of third party videos that may be helpful when getting started with REW.
How to Use Room EQ Wizard part 1, setup and taking measurements (by Music City Acoustics)
How to Use Room EQ Wizard part 2, analyzing acoustic measurements (by Music City Acoustics)
A short video tutorial in German (also available in English, both by Marcel Schechter)
A video tutorial in German about subwoofer level and phase alignment (Pegelanpassung & Phasenlage für Subwoofer mit Bass Management by Marcel Schechter)
A comprehensive guide in French by Adrien Perinot (Projet Home Studio)
- Guy-Bart Stan, Jean-Jacques Embrechts, Dominique Archambeau, "Comparison of different impulse
response measurement techniques", JAES Volume 50, Issue 4, pp. 249-262, April 2002. Available online
- Swen Müller, Paulo Massarani, "Transfer-Function Measurement with Sweeps", JAES Volume 49
Issue 6 pp. 443-471, June 2001. An extended version of the paper is available at
- Angelo Farina, "Simultaneous measurement of impulse response and distortion with a swept-sine
technique", 108th AES Convention, February 2000. Available as entry number 134 in
this list of papers
- Nikolaos M. Papadakis and Georgios E. Stavroulakis, "Low Cost Omnidirectional Sound Source Utilizing a
Common Directional Loudspeaker for Impulse Response Measurements", Appl. Sci. 2018, 8(9), 1703; Available
online at https://doi.org/10.3390/app8091703