The coloration of amplitude-panned virtual sources is studied with listening tests and with auditory modeling for anechoic and reverberant listening. It is found that the amplitude panning produces a comb-filter effect that is audible in anechoic listening. When the listening room is reverberant, the effect is less audible depending on the amount of reverberation. The coloration of a virtual source is dependent on the number of loudspeakers used to generate it, and it is also dependent on the locations of loudspeakers.
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