Produced by a Walla Group (a group of people used to create a Walla), a Walla is a sound effect used to simulate a crowd murmuring. This is a type of ambient background noise effect used in the film production industry to make documentaries, films, corporate video, sports video productions or educational video. A Walla Group can also be used in TV commercials or viral advertising campaigns to generate crowd noise or murmuring. (Sound)
Waste is a lighting term used in the video production and film industries to denote lighting which initially shines on a subject or object, then turns away producing a spilling or waste of light. (Lighting)
A Wave is a regular electromagnetic emission such as light or a sound pressure wave. The frequency, amplitude and minute changes in wavelength produce light and sound variations (Sound / picture / electronics)
