Effects of Directivity of Microphones and Loudspeakers on Accuracy of Synthesized Wave Fronts in Sound Field Reproduction Based on Wave Field Synthesis

摘要

Sound field reproduction based on wave field synthesis is a technique that synthesizes wave fronts in a listening area using multiple microphones and loudspeakers placed at the boundary of the area. This study evaluates the effects of the directivity of microphones and loudspeakers on the accuracy of synthesized wave fronts. Three directional patterns (omnidirectional, unidirectional, and shotgun) were designed as directivity conditions of microphones and loudspeakers. The results of computer simulation show that there is almost no effect due to directivity of loudspeakers and that unidirectional or shotgun microphones can accurately reproduce wave fronts.