Details Details PDF BIBTEX RIS Title High-Directional Sound Propagation Over the Earth’s Surface Journal title Archives of Acoustics Yearbook 2020 Volume vol. 45 Issue No 4 Authors Rakov, Denis S. ; Rakov, Aleksandr S. ; Chursin, Yury A. ; Pavlichev, Vsevolod V. ; Igumnov, Artyom O. Keywords parametric loudspeaker ; ultrasound ; primary frequency ; difference frequency ; radiation pattern ; outdoor propagation of sound ; sound attenuation Divisions of PAS Nauki Techniczne Coverage 747-752 Publisher Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics Date 2020.12.28 Type Article Identifier DOI: 10.24425/aoa.2020.135280 Source Archives of Acoustics; 2020; vol. 45; No 4; 747-752 <div class="test"></div>