Room EQ Wizard
roomeqwizard.com
What it is
Room EQ Wizard (REW) is measurement and analysis software for working on listening-room, studio, and home-theater acoustics, speaker and subwoofer placement, audio-chain performance, and EQ. It measures frequency response and distortion with logarithmic swept sine signals and supports USB or analog measurement microphones and SPL meters. Its views include impulse and step responses, energy-time curves, spectral decay, waterfalls, spectrograms, reverberation times, distortion, phase, group delay, and real-time analysis. REW's signal generator produces tones, sweeps, bursts, and noise, among other signal types, with WAV export. Its EQ tools identify response peaks, assign filters, optimize filter parameters, and display predicted EQ waterfalls live. The Room Simulator supports up to eight subwoofers. The free plan includes single-channel capture, measurement, real-time analysis, and EQ tools. REW runs on Linux, macOS, and Windows.
Spec sheet
- Purpose
- REW helps optimize listening-room, studio and home-theater acoustics, speaker and subwoofer placement, audio-chain performance and EQ.Read 1 Oct 2026 · roomeqwizard.com
- Platforms
- Downloads are provided for Windows 7/8/10/11 and Vista/XP Pro x64, macOS 10.15–14, and Linux AMD64 or Java-runtime-based Linux.Read 1 Oct 2026 · roomeqwizard.com
- Integrations
- Equalizer entries include miniDSP, CamillaDSP, Hypex Input EQ, StormAudio, Dutch&Dutch 8c, Behringer, QSC, Crown, Xilica, Anti-Mode and other listed devices and processors.Read 1 Oct 2026 · roomeqwizard.com
- Privacy
- The REW application and website do not collect user information, and downloads are free and anonymous; Pro-purchase email addresses are used only to deliver the upgrade code.Read 1 Oct 2026 · roomeqwizard.com
- Support
- The maker provides comprehensive in-app and online help and directs users to the AV NIRVANA REW forum for assistance.Read 1 Oct 2026 · roomeqwizard.com
- License
- John Mulcahy licenses REW without charge for personal, educational and commercial use under a limited, non-exclusive, non-transferable license.Read 1 Oct 2026 · roomeqwizard.com
- Analysis tools
- The software provides impulse and step responses, energy-time curves, spectral-decay plots, waterfalls, spectrograms, reverberation times, distortion, phase, group-delay and RTA views.Read 1 Oct 2026 · roomeqwizard.com
- Equalization
- REW automatically identifies response peaks, assigns EQ filters, optimizes filter parameters and can show predicted EQ waterfalls live.Read 1 Oct 2026 · roomeqwizard.com
- Measurement
- It measures frequency response and distortion using logarithmically swept sine signals and supports USB or analog measurement microphones and SPL meters.Read 1 Oct 2026 · roomeqwizard.com
- Notable limitation
- The Pro upgrade is not required for multichannel outputs, which can be accessed through WASAPI exclusive or ASIO on Windows and Java drivers on macOS or Linux.Read 1 Oct 2026 · roomeqwizard.com
- Pro capture
- The Pro upgrade captures multiple inputs simultaneously, supports per-input calibration, configurable weighting and SPL alignment, and averages captured channels.Read 1 Oct 2026 · roomeqwizard.com
- Room simulator
- The Room Simulator supports up to eight subwoofers.Read 1 Oct 2026 · roomeqwizard.com
- Signal generator
- Its signal generator produces sine, square, sawtooth, dual-tone, triple-tone, multitone, tone-burst, CEA-2010, sweep, pink-noise and white-noise signals, with WAV export.Read 1 Oct 2026 · roomeqwizard.com
- STI
- The Pro upgrade calculates Speech Transmission Index from impulse responses by the indirect method specified in IEC 60268-16:2020.Read 1 Oct 2026 · roomeqwizard.com
Plans and prices
Free Free Free! single-channel capture · room/audio measurement · real-time analyzer · EQ tools Read 1 Oct 2026 · roomeqwizard.com
REW Pro upgrade Price not published one-time fee multi-input capture · up to 32 input level meters · up to 16 individual RTA traces · STI calculation Read 1 Oct 2026 · roomeqwizard.com
Strong points and limits
Strong points
- Measures frequency response and distortion
- Room Simulator supports up to eight subwoofers
- Free plan includes measurement and EQ tools
- Runs on Linux, macOS, and Windows
Limits
- Free plan is limited to single-channel capture
Who it suits
REW suits people measuring room or audio response and adjusting EQ on Linux, macOS, or Windows. Its Pro upgrade may suit users who need multi-input capture or STI calculation.
Verdict
REW combines measurement, analysis, signal generation, and EQ tools in a free application.
Where Specifiction places it
- Audio Analysis Software#26 of 437.6
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