Provides a direct PDF link for Volume 2 specifically from the 1944 edition.
It is often cited as the "Bible of Acoustics" because Rayleigh established the mathematical framework used in modern sonar, architectural acoustics, and music theory.
You can find the Russian translation (Теория звука) in various formats (PDF, DJVU, ZIP) on digital library platforms:
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.
If you are looking for "sound theory" in the context of rather than physics, specialized resources like the EDM Production Reddit recommend modern manuals from institutions like Berklee College of Music , which are often shared in community groups like VK Music Theory .
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 old, it is in the public domain and available for free legally. Where to Download (Russian Editions)