Georgia State University
Georgia State University: Hyper Physics: Refraction of Sound
A discussion of refraction and its application to sound waves. Using analogies, graphics and real-life applications, this page and those that accompany it explain why and when sound waves bend.
University of Maryland
University of Maryland: Thinking Problems With Sound
A series of thought-provoking multiple-choice questions from the University of Maryland on the topic of sound and acoustics. One question pertains to the acoustics of a furnished room with two speakers; demands a basic understanding of...
Canada Science and Technology Museum
Canada Science and Technology Museum: Materials
Test your skill and find out which materials absorb sound well.