Reflection of sound

Reflection of sound

The return of sound waves from surfaces on which they are incident. The geometrical laws for reflection of sound waves are the same as those for light waves. The apparent differences involve only questions of scale, because the average wavelength of sound is about 100,000 times that of light. For example, a mirror or lens used to produce a beam of sound waves must be enormously large compared to mirrors and lenses used in optical systems. See Reflection of electromagnetic radiation

A concave surface tends to concentrate the reflected sound waves. Convex reflectors tend to spread the reflected waves. Therefore, when placed at the boundaries of a room, they tend to diffuse the sound throughout the room. For this reason, some radio-broadcasting studios employ cylindrical convex panels as part of their wall construction to promote diffusion. See Echo, Sound

McGraw-Hill Concise Encyclopedia of Physics. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The park district has a AA+ bond rating, which is a reflection of sound financial management policies and practices.
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Things to consider include flooring, wallcoverings, furniture, windows, and any other large objects that will influence the absorption or reflection of sound. In addition, ask the partition manufacturer about the bottom seal's interaction with flooring, the design of the top seal, or the header area above the panel.
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What is the term for the reflection of sound waves?