## Acoustical Physics, Volume 40, Issues 4-6 |

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### Contents

Scattering of Interacting Plane Waves by a Sphere | 473 |

Study of Thermal Acoustic Radiation in the Framework | 480 |

Intensity and Phase Fluctuations of LowFrequency Acoustic Signals | 497 |

Copyright | |

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absorption acoustic wave Akust amplitude angle angular anisotropy antenna approximation array attenuation bottom boundary calculated characteristics cluster coefficient components correlation corresponding crystal curve density depth determined dimensionality displacement distance distribution elastic elastic moduli equation estimates fluctuations fractal fracton function harmonic hydroacoustic hydrophones inhomogeneous intensity internal waves interval inverse problem laser layer linear low-frequency measured medium method mode Moscow Nauka noise nonlinear Nonlinear Acoustics obtained Original Russian Text oscillations parameters phase phonon Physics piezoelectric plane porous medium pressure problem propagation pulse quency radiation Rayleigh wave reflection reflection coefficient region resonance Russia Received Russian Academy Russian Text Copyright scattering signal solution sound field sound velocity spatial spectral spectral density spectrum structure surface surface acoustic waves temperature thermal thickness tion ultrasonic underwater values vector vertical vibrations wavefront waveguide zero