The invention discloses an implementation method and system of a road prompt acoustic directional broadcasting system, a medium and equipment. The implementation method comprises the following steps: S1, calculating a half-power beam width theta-3dB of an acoustic array according to a road width W and a broadcasting action range L; and S2, according to a calculation formula of the uniform one-dimensional linear array half-power wave beam width, determining conditions satisfied by the array element spacing d and the array element number N in the sound array, and further determining values of the array element spacing d and the array element number N. The system realized by adopting the method can realize directional broadcasting in an accurate range under the condition of increasing the sound power of the road voice broadcasting system, and reduces sound interference and sound pollution outside a target range.
本发明公开了一种道路提示声学定向广播系统的实现方法、系统、介质及设备,其中实现方法包括:S1、根据道路宽度W和广播作用范围L计算声阵列的半功率波束宽θ‑3dB;S2、根据均匀一维线性阵列半功率波束宽的计算式确定所述声阵列中阵元间距d与阵元数量N满足的条件,进而确定阵元间距d与阵元数量N的取值。采用该方法实现的系统能够在增大道路语音播报系统声功率的情况下实现精确范围的定向播报,降低目标范围外的声干扰与声污染。
Implementation method and system of road prompt acoustic directional broadcasting system, medium and equipment
道路提示声学定向广播系统的实现方法、系统、介质及设备
2022-07-05
Patent
Electronic Resource
Chinese
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