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

页码：747 / 752

页数：6