WAVE FIELD SYNTHESIS APPARATUS AND METHOD OF DRIVING AN ARRAY OF LOUDSPEAKERS

摘要

Wavefield synthesis (WFS: wave field synthesis) for driving an array of loudspeakers with drive signals from the device, said loudspeaker is different is placed in the specified position, the drive for said loudspeaker signal to the position and the loudspeaker array defined in said loudspeaker for the basis of the audio signal associated with the virtual sound sources (virtual source) having a virtual position (virtual position), first, a position of the virtual sound source, on the basis of the specified position of the predetermined listener position and said loudspeaker, from the virtual sound source the artifacts due to loudspeaker signals moving in the direction opposite to the direction of the listener in a predetermined position is reduced, the relevant loudspeakers of the loudspeaker is determined. Next, the means for proceeding to the relevant loudspeakers and the means 20 for calculating the drive signal components for the virtual source, and supplying the drive signal components for the relevant loudspeakers for the virtual source to the relevant loudspeakers 24 this may, where there is not supplied a drive signal for the virtual sound source that does not belong loudspeaker of the loudspeaker array to the associated loudspeaker. Thus, artifacts in the sound box of the region due to the occurrence wavefield is suppressed, and thus the area in the useful wave coupon will be heard by the artifact is no natural way. ; Virtual sound sources, Chapter waves, loudspeaker arrays, WFS, and a virtual position