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Interchannel Interference at the Listening Position in a Five-channel Loudspeaker Configuration

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It is commonly-accepted thinking that the use of a five-channel surround sound reproduction system increases the size of the listening area over that for two-channel stereophonic systems. In actual fact, for many types of program material, the area of this so-called "sweet spot" is reduced due to interference between the channels at the listener's ears. This effect is described and analysed through theoretical evaluation and psychoacoustic listening tests.

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AES - Audio Engineering Society