1. Reverberation is the sound of a signal bouncing off of multiple surfaces in a space and arriving at the listener at varying amplitudes and times.
    2. An effect added in the recording process to make tracks sound like they were recorded in a different or larger room.
    3. A time-based effect added in the mixing process to provide ambience and space in a mix, including tools such as chamber reverbs, plate reverbs, spring reverbs, digital reverbs, and convolution reverbs.