A popular approach for multichannel recordings of classical music is to reproduce the stage via the front channels, while the rear channels are limited to the reproduction of early reflections and diffuse sound. This paper investigates the influence of systematic variations of a spaced pair of surround microphones on the spatial impression of the reproduced sound. The investigations include variations of the distance between front and rear microphones and of the spacing of the capsules, as well as variations of the respective polar patterns.
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