High-Directional Sound Propagation Over the Earth's Surface

被引：1
|
作者：
Rakov, Denis S. [1 ,2 ]
Rakov, Aleksandr S. [1 ,2 ]
Chursin, Yury A. [3 ]
Pavlichev, Vsevolod V. [3 ]
Igumnov, Artyom O. [3 ]
机构：
[1] Inst Monitoring Climat & Ecol Syst SB RAS, Tomsk, Russia
[2] Tomsk State Univ Control Syst & Radioelect, Tomsk, Russia
[3] Natl Res Tomsk Polytech Univ, Tomsk, Russia
来源：
ARCHIVES OF ACOUSTICS | 2020年 / 45卷 / 04期
关键词：
parametric loudspeaker; ultrasound; primary frequency; difference frequency; radiation pattern; outdoor propagation of sound; sound attenuation; LOUDSPEAKER; WAVES;
D O I：
10.24425/aoa.2020.135280
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The article discusses the issues of accounting the direction pattern of parametric antenna array the propagation of sound over the Earth's surface. As a radiator, a parametric antenna array is used. A description is given of measuring equipment and experimental research methods. The Delaney-Bezley model was used as a model of the Earth's surface impedance. The research results showed the importance of accounting the direction pattern of parametric antenna array in predicting the sound pressure level of a propagating acoustic signal over the Earth's surface. On the example of a difference signal with a frequency of 2 kHz, the calculation of the sound pressure level on a 100-meter path with the influence of the Earth's surface is shown. The results obtained showed a good agreement between the theoretical calculation and experimental data.
引用
收藏
页码：747 / 752
页数：6
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