Vol. 66, No. 5, 2020

Acoustical Physics

Classical Problems of Linear Acoustics and Wave Theory

Numerical and Asymptotic Solution of the Problem of Oscillations of an Inhomogeneous Waveguide with an Annular Crack of Finite Width

A. O. Vatulyan and V. O. Yurov p. 441 abstract

Creating a Reference Plane Ultrasonic Wave in a Fluid Using a Plane Piezoelectric Transducer with a Large Wave Dimension

A. A. Krokhmal, D. A. Nikolaev, S. A. Tsysar and O. A. Sapozhnikov p. 449 abstract

Reflection of Plane Waves at an Interface of Water/Patchy Saturated Porous Media with Underlying Solid Substrate

Puyi Li, Lina Gao, Jinxia Liu, Zhengliang Cao and Zhiwen Cui p. 461 abstract

Characterization and Optimization of Acoustic Field for Curved Array Probe

Li Lin, Huan-qing Cao and Zhong-bing Luo p. 469 abstract

Anomalies of Acoustic Wave Scattering Near the Cut-off Points of Continuous Spectrum (A Review)

S. A. Nazarov p. 477 abstract

Physical Acoustics

Experimental Studies on Viscosity Reduction of Heavy Crude Oil by Ultrasonic Irradiation

Qiang Hua p. 495 abstract

Ocean Acoustics. Hydroacoustics

Reconstructing the Directivity Pattern of a Sound Source in Free Space by Measuring its Field in a Tank

A. L. Virovlyansky, A. Yu. Kazarova and L. Ya. Lyubavin p. 501 abstract

Acoustic Parameters of the Bottom In Lake Baikal

V. A. Grigoriev, K. M. Kucher, A. A. Lunkov, M. M. Makarov and V. G. Petnikov p. 508 abstract

Acoustics of the Ocean. Hydroacoustics

Acoustic Noise Generated on a Shallow-Water Shelf by Vessels with Electric Motors

A. N. Rutenko, M. Yu. Fershalov and V. G. Ushchipovskii p. 517 abstract

Atmospheric and Aeroacoustics

Using the Correlation Model of Random Quadrupoles of Sources to Calculate the Efficiency of Turbulent Jet Noise Screening with Geometric Diffraction Theory

S. L. Denisov, V. F. Kopiev, N. N. Ostrikov, G. A. Faranosov and S. A. Chernyshev p. 528 abstract

Acoustics of Living Systems. Biomedical Acoustics

Time–Frequency Analysis of The Second Heart Sound to Assess Pulmonary Artery Pressure

V. G. Andreev, V. V. Gramovich, M. V. Krasikova, A. I. Korolkov, O. N. Vyborov, N. M. Danilov, T. V. Martynyuk, O. V. Rodnenkov and O. V. Rudenko p. 542 abstract

Acoustics of Living Systems. Biological Acoustics

Features of Sound Conduction in Human Lungs in the 80–1000 Hz and 10–19 KHz Frequency Ranges

V. I. Korenbaum and A. D. Shiryaev p. 548 abstract

Physical Foundations of Technical Acoustics

On the Operation of an Electroacoustic Transducer Based on Electrokinetic Phenomena under Turbulent Fluid Motion

B. P. Sharfarets, V. E. Kurochkin and V. A. Sergeev p. 559 abstract

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