- Tytuł:
- High-Directional Sound Propagation Over the Earth’s Surface
- Autorzy:
-
Rakov, Denis S.
Rakov, Aleksandr S.
Chursin, Yury A.
Pavlichev, Vsevolod V.
Igumnov, Artyom O. - Powiązania:
- https://bibliotekanauki.pl/articles/1953521.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czasopisma i Monografie PAN
- Tematy:
-
parametric loudspeaker
ultrasound
primary frequency
difference frequency
radiation pattern
outdoor propagation of sound
sound attenuation - Opis:
- 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.
- Źródło:
-
Archives of Acoustics; 2020, 45, 4; 747-752
0137-5075 - Pojawia się w:
- Archives of Acoustics
- Dostawca treści:
- Biblioteka Nauki
Artykuł