REW is a Java application for measuring room acoustics and analysing room and loudspeaker responses.It includes tools for generating test signals; measuring SPL and impedance; measuring frequency and impulse responses; generating phase, group delay and spectral decay plots, waterfalls, spectrograms and energy-time curves; generating real time analyser (RTA) plots; calculating reverberation times; calculating Thiele-Small parameters; determining the frequencies and decay times of modal resonances; 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 curve.
Features:
- Phase & Group Delay (measured, minimum and excess)
- Phase wrap/unwrap, minimum phase generation
- Step Response and Spectrogram plots
- Impedance measurement and Thiele-Small parameter calculation from impedance measurements
- Impulse Response delay calculation and adjustment
- Measurement arithmetic functions, add/subtract/multiply/divide/merge measurement
- Separate windows for overlays, RTA and EQ functions
- Sound level meter with full integrating functionality including equivalent sound level and sound exposure level; mic/meter and soundcard calibration corrections applied; A, C or Z weighting
- New algorithms for EQ adjustment offering exceptional tracking of target responses, can be used over any frequency range
- Waterfalls of predicted results of EQ can be viewed in the EQ panel and can update live as filter settings are adjusted
- Support for QSC DSP-30, Crown USM 810, Behringer DCX2496 and MiniDSP parametric filters
- Resonance analysis to determine the frequencies and decay times of modal resonances with pole-zero plots of the response and any filters applied
- "Modal" filter setting provided for parametric EQ filters to aid in correcting modal decay
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