Apple Soundtrack Pro 2 - Manual (Page 338)

338 Chapter 11 Working with Audio Effects
Reverb
Reverberation, usually shortened to reverb, simulates the sound of acoustic
environments such as rooms, concert halls, caverns, or the sound of infinite space. In
any acoustic space, sounds echo off the surfaces of the space (the floor, walls, and
ceiling) over and over, gradually dying out until they become inaudible. Reverb effects
consist of thousands of delays, of varying lengths and intensities, that simulate these
natural echoes. Reverb helps define the sense of space in which sounds take place, and
can be used to simulate both realistic and fantastic acoustic environments.
The first form of reverb actually used a room with hard surfaces (called an echo
chamber) to add echoes to the signal. Mechanical devices, including plates and springs,
were also used to add reverberation to the output of instruments and microphones.
Digital sound recording has made it possible to use digital reverbs, which use complex
algorithms (sets of equations) to simulate various acoustic environments with greater
accuracy and flexibility.
Space Designer plug-in