Archives of Acoustics, 18, 2, pp. 263-279, 1993

Bank-limited noise interference in loudspeaker systems

T. Fidecki
Chopin Academy of Music Laboratory of Music Acoustics, 00-368 Warszawa, ul. Okólnik 2

It is often argued that the interference of sound from distant loudspeakers is negligible in the case of band-limited noise. Simple theory and experiment in a reflection-free environment with a pair of loudspeakers radiating a third-octave noise proves that in the case of coherent supply SPL variations are considerable. The variations disappear when non-coherent signal is applied indicating that non-coherent supply of loudspeakers is necessary wherever approximation of diffuse sound field is required.
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