Provides answers and defines important concepts relating to sound, its propagation, behavior and potential dangers, and the mechanics of the ear.

Offers answers to important questions about concepts and techniques for the control of noise or vibrations.

Encyclopedic overview of the study of sound details the methods that experts use to manipulate sound.

Learn about how sounds support or clash with each other to produce additional resonating tones.

Describes acoustic surveillance and navigational systems used by military and civilian vessels to detect other ships or natural objects.

Read about the transmission, speed, and behavior of sound waves, and learn about the history of acoustical study.

Offers details on this area of research and on its practical applications in communications, medicine and industry.

Browse facts about sonic booms from NASA's Dryden Flight Research Center. Explains the cause of sonic booms and methods of measurement.

Learn about this low-pitched hum. Includes FAQ, links, news and photos.

Locate and download resources relating to spatial audio, multimedia and virtual reality, including audio files, music and software.

Watch GIF and MPEG movies of vibrations and wave phenomena in different types of oscillating systems and environments.

Links to audio and acoustic information, including ezines, FAQs, institutions, manufacturers, researchers, and publications.