Reverb effect
Artificial reverberation audio effect From Wikipedia, the free encyclopedia
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. The American producer Bill Putnam is credited for the first artistic use of artificial reverb in music, on the 1947 song "Peg o' My Heart" by the Harmonicats.
Plate reverb uses electromechanical transducers to create vibrations in large plates of sheet metal. Spring reverb, created with a series of mounted springs, is popular in surf music and dub reggae. Shimmer reverb, which alters the pitch of the reverberated sound, is often used in ambient music. Convolution reverb uses impulse responses to record the reverberation of physical spaces and recreate them digitally. Gated reverb became a staple of 1980s pop music, used by drummers including Phil Collins.
Echo chambers
The first reverb effects, introduced in the 1930s, were created by playing recordings through loudspeakers in reverberating spaces and recording the sound.[2] The American producer Bill Putnam is credited for the first artistic use of artificial reverb in music, on the 1947 song "Peg o' My Heart" by the Harmonicats. Putnam placed a microphone and loudspeaker in the studio bathroom to create an echo chamber, adding an "eerie dimension".[1]
Plate reverb
A plate reverb system uses an electromechanical transducer, similar to the driver in a loudspeaker, to create vibrations in a large plate of sheet metal. The plate's motion is picked up by one or more contact microphones whose output is an audio signal which may be added to the original "dry" signal.[3] Plate reverb was introduced in the late 1950s by Elektromesstechnik with the EMT 140.[3][2]
Spring reverb
Spring reverbs, introduced by Bell Labs, use a set of springs mounted inside a box.[1] They work similarly to plate reverb, with a transducer and pickup placed at either end of the spring.[2] They were popular in the 1960s, and were first used by the Hammond company to add reverb to Hammond organs.[1] They became popular with guitarists, including surf musicians such as Dick Dale,[1] as they could easily be built into guitar amplifiers.[1] They were also used by dub reggae musicians such as King Tubby.[1] The American engineer Laurens Hammond of the Hammond company was granted a patent on a spring reverb system in 1939.[4]
Digital reverb
Digital reverb units simulate reverb by using multiple delay lines with fading trails, giving the impression of sound bouncing off surfaces. Some digital effects allow users to independently adjust early and late reflections.[2] Digital reverb was introduced in 1976 by EMT with the EMT 250,[2] and became popular in the 1980s.[1]
Gated reverb
Gated reverb combines reverb with a noise gate, creating a "large" sound with a short tail.[5] It was pioneered by the English recording engineer Hugh Padgham and the drummer Phil Collins, and became a staple of 1980s pop music.[5]
Convolution reverb
Convolution uses impulse responses to record the reverberation of physical spaces and recreate them digitally.[1][6] The first real-time convolution reverb processor, the DRE S777, was announced by Sony in 1999.[2] Convolution reverb is often used in film production, with sound engineers recording impulse responses of sets and locations so sounds can be added in post-production with realistic reverberation.[7]
Shimmer reverb
Shimmer reverb alters the pitch of the reverberated sound, an effect often used in ambient music.[8]
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