It is often cited as the "Bible of Acoustics" because Rayleigh established the mathematical framework used in modern sonar, architectural acoustics, and music theory.
Provides a direct PDF link for Volume 2 specifically from the 1944 edition. teoriia zvuka kniga skachat
You can find the Russian translation (Теория звука) in various formats (PDF, DJVU, ZIP) on digital library platforms: It is often cited as the "Bible of
Offers high-quality scans of Volume 1, published by the State Publishing House of Technical and Theoretical Literature. Since the work is well over 100 years
Since the work is well over 100 years old, it is in the public domain and available for free legally. Where to Download (Russian Editions)
The book is split into two volumes. Volume 1 focuses on the vibrations of strings, bars, plates, and membranes. Volume 2 covers the propagation of sound through gases and liquids, focusing on wave equations and diffraction.