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An echo chamber is a hollow enclosure used to produce reverberation, usually for recording purposes. A traditional echo chamber is covered in highly acoustically reflective surfaces. By using directional microphones pointed away from the speakers, echo capture is maximized. Some portions of the room can be moved to vary the room's decay time.
Delay is an audio signal processing technique that records an input signal to a storage medium and then plays it back after a period of time. When the delayed playback is mixed with the live audio, it creates an echo-like effect, whereby the original audio is heard followed by the delayed audio.
The most common device is a handheld, battery-operated device pressed against the skin under the mandible which produces vibrations to allow speech; [1] other variations include a device similar to the "talk box" electronic music device, which delivers the basis of the speech sound via a tube placed in the mouth. [2]
Microphones placed in echo chambers with specially designed acoustic properties simulated the sound of live performances in different environments. In the mid to late 1940s, recording engineers and experimental musicians such as Les Paul began manipulating reel-to-reel recording tape to create echo effects and unusual, futuristic sounds.
During a recording session, a signal from one or more of the microphones in the studio could be routed to the loudspeaker in the echo chamber; the sound from the speaker reverberated through the chamber and the enhanced signal was picked up by the microphone at the other end. This echo-enhanced signal, which was often used to sweeten the sound ...
A reverb effect, or reverb, is an audio effect applied to a sound signal to simulate reverberation. [1] It may be created through physical means, such as echo chambers, or electronically through audio signal processing.
Users may adjust the bass and treble levels on the output sound, the number of echo repeats, the length of each echo, and the ratio of the echo and reverb sounds. [1] The Space Echo has two microphone inputs, one instrument input, and one input for a mixer or PA. [1] The character of the delay sound changes as the tape wears with use. [2]
A mult box is a device that allows a single audio source, such as a microphone, to be shared to multiple outputs for recording or broadcast. [1] A mult box is sometimes called a press box, but that term is usually reserved for the sports media's section of an arena. It may also be called a press mult box or press bridge. [2]