DIRECTIONAL SPEAKER DEVICE

摘要

PURPOSE:To provide a directional speaker device for not generating strong side lobes even in a frequency band whose wavelength is shorter than the interval of speaker units. CONSTITUTION:This device is provided with a speaker array 2 in which 8 speaker units 1 are arranged in a line with a fixed interval and the speaker array 3 composed of 7 speaker units 1 arranged parallelly at the positions next to the speaker array 2 so as to be shifted from the positions of the speaker units 1 with the direction of the speaker array 2 as a reference. Thus, the frequency band is widened to the side of a high frequency band.