IRIS is one of two spatial room impulse response analysis methods reviewed as part of a recent independent study by Amengual et al. published in the April 2017 edition of the Journal of the Acoustical Society of America.
The article compares IRIS with SDM (Spatial Decomposition Method), a method which decomposes a sound-ﬁeld as a succession of plane waves using an array of at least four microphones. The study includes consideration of spatial resolution, temporal resolution and room acoustics measurements, finding that "[...] the spatial accuracy of both methods is similar and in most cases the error is comparable to the localization uncertainty of human listeners".
The authors additionally note how easy-to-use the IRIS system is: "The operation and configuration of IRIS is effortless..."
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I regard the acoustic designs of Marshall Day Acoustics to be amongst the finest and probably the most innovative in the world.Dr Anders Gade, Technical University of Denmark
The operation and configuration of IRIS is effortless...Sebastià V. Amengual Garí
The success of a musical performance depends on the sense of proximity of performer to listener. This sense is mediated largely by the directional properties of the reflected sound field.Sir Harold Marshall