- For surfaces large compared to the wavelength of impinging sound, sound is reflected much as light is reflected, with the angle of incidence equaling the angle of reflection.
- A sound wave that has been "bounced off" a surface--not direct sound from the source. Sound that goes from a source to a surface and then is reflected back to the listener. This will then combine with the direct sound (and other reflected sound waves) and cause phase cancellations. (which results in bad sound). Source: Church Audio & Acoustics Glossary