## 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 and spectral decay plots, waterfalls 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.

For hints, tips and help visit www.hometheatershack.com/forums/rew-forum The REW home page is at www.roomeqwizard.com

### Requirements

- REW can be used on Windows XP/7/8/8.1, OS X 10.7.3 or later and Linux
- Minimum screen resolution: 1024 x 768
- Minimum RAM: 1GB, 4GB or more recommended
- For Windows and Linux REW requires Java 7 or later, available from http://www.java.com. On Linux the Oracle Java runtime seems to work best.
- On OS X a JRE is included within the REW app bundle for exclusive use of REW, Java does not need to be installed
- On Linux REW uses the Metal Look and Feel
- RS232 serial communications (only used to communicate with TAG McLaren Audio AV32R DP and AV192R AV Processors) only function on Windows.
- Midi communication (used to set filters on Behringer BFD Pro DSP1124P and FBQ2496 equalisers) is supported on Windows. Linux may require Tritonus to support Midi comms. Mac OS X should support Midi.

### 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.

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

    HKEY_CURRENT_USER\Software\JavaSoft\Prefs\room eq wizard

The preferences (under any OS) can be deleted by using the Delete Preferences and Shut Down option in the Preferences menu.

### 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

Soundcard debug data is generated by a modified version of Florian Bomers' ListMixers class, available from the Java Sound Resources web pages at http://www.jsresources.org/

REW uses the JTransforms pure Java FFT library available at http://sites.google.com/site/piotrwendykier/software/jtransforms

Thanks to Gerrit Grunwald for ideas and elements from his Steel Series components, available at http://harmoniccode.blogspot.com

ASIO interfaces are supported using Martin Roth's JAsioHost, available at https://github.com/mhroth/jasiohost

REW's installers are built with the Install4J multi-platform installer builder, available at http://www.ej-technologies.com/products/install4j/overview.html

Copyright © 2004-2015 John Mulcahy All Rights Reserved

### Get started with REW

Send feedback to feedback@roomeqwizard.com

Help Index