Welcome to REW

REW (Room EQ Wizard) is a Java application for measuring room responses and countering room modal resonances. It includes tools for generating test signals; measuring SPL; measuring frequency and impulse responses; generating phase, group delay, spectral decay plots, waterfalls, spectrograms and energy-time curves; generating real time analyser (RTA) plots; calculating reverberation times; 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.

REW uses a logarithmically swept sine signal for its measurements. This is much faster than manual measurements, more accurate, less likely to suffer from clipping at resonances, less sensitive to system non-linearity than MLS and allows the impulse response of the room to be determined, which in turn is the basis for many additional features. When using the Real Time Analyser displays REW can generate Pink Periodic Noise sequences for much better visibility of low frequency behaviour than obtained using random Pink Noise without the need for lengthy averaging.

The REW home page is at . For hints, tips and help visit the REW forum at .

The REW home page is at www.roomeqwizard.com. For hints, tips and help visit the REW forum at www.avnirvana.com.

Requirements

Windows XP, Vista, 7, 8 or 8.1

When installing REW on Windows XP, Vista, 7, 8 or 8.1 you may encounter a somewhat cryptic error message:
"The program can't start because api-ms-win-core-timezone-l1-1-0.dll is missing from your computer. Try reinstalling the program to fix this problem.".
This is caused by the Java runtime using components from the Windows Universal C Runtime which are not present on older Windows installations. To fix it see this Microsoft knowledge base article, KB2999226 at https://support.microsoft.com/en-us/help/2999226/update-for-universal-c-runtime-in-windows.

Linux installation

Diagnostics

REW saves diagnostic logs in the user's home directory, the location is displayed in the Help → About REW window. The logs contain information from the last 10 startups, including any error messages or warnings that may have been generated. On macOS the logs are in the user library folder, which no longer appears in Finder by default. To display it either browse to ~/Library/Logs or open your Home folder in Finder (Shift Command + H), select View > Show View Options then select the checkbox to show the library folder.

REW saves a temporary copy of each measurement made in the logs folder. A normal shutdown deletes those temporary copies. If REW did not shut down normally it will warn of temporary file existence on startup and offer to load them.

The startup preferences for REW on Windows systems are stored in this registry key:

HKEY_CURRENT_USER\Software\JavaSoft\Prefs\room eq wizard

On macOS the startup preferences are stored in:

~/Library/Preferences/com.apple.java.util.prefs.plist
under a key called room eq wizard.

Preferences can be deleted from Preferences → Delete Preferences and Shut Down or by running the REW uninstaller.

No Warranty

THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

Acknowledgements

REW uses the JTransforms pure Java FFT library available at .

ASIO interfaces are supported using Martin Roth's JAsioHost, available at .

REW's installers are built with the Install4J multi-platform installer builder, available at .

Thanks to Gerrit Grunwald for ideas and elements from his Steel Series components, available at .

REW uses the Hola Multicast DNS Service Discovery library available at .

REW uses the Java WebSocket client available at .



REW uses the JTransforms pure Java FFT library available at JTransforms

ASIO interfaces are supported using Martin Roth's JAsioHost, available at JAsioHost

REW's installers are built with the Install4J multi-platform installer builder, available at ej-technologies

Thanks to Gerrit Grunwald for ideas and elements from his Steel Series components, available at Harmonic Code

REW uses the Hola Multicast DNS Service Discovery library available at Hola

REW uses the Java WebSocket client available at Java WebSocket

Copyright © 2004-2020 John Mulcahy All Rights Reserved

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