The room effect is an important aspect of sound recording technique and is typically captured separately from the direct sound. The perceptual attributes of multichannel spatial audio have been established by previous authors, while the psychoacoustic underpinnings of room perception are known to varying degrees. The Hamasaki Square, in combination with a delay plan and an aesthetic disposition to "natural" recordings, is an approach practiced by some sound recording engineers. This study compares the Hamasaki Square to an alternative room effect and to dry approaches in terms of a number of multichannel spatial audio attributes. A concurrent experiment investigated the same spatial audio attributes with regard to the microphone and reproduction approach. As such, the current study uses a 12/2 system based upon 3/2 (5.1 surround) where the frontal L/C/R triplet has been replaced by a linear wavefront reconstruction array. AES 135th Convention Student Technical Papers Award Cowinner
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