Audio reproduction systems with sound projection create virtual sources by projecting sound on re?ective bound-aries using highly focusing real sound sources. The aim of this reproduction approach is to generate auditory events located in the direction of the virtual sources rather than the direction of the real sources. However, the focusing capabilities of real sources, e. g., loudspeaker arrays, are physically limited. This causes, that in practice the perception of the listener is not only in?uenced by the projected sound, but also by sound which is directly radiated from the real source. The present study investigated the frequency dependent in?uence of the direct sound on the effect of sound projection using band limited noise bursts and a method of adjustment procedure.
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