Reverberation camera

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Reverberation camera - an electronic device used to produce an artificial echo. This name is a bit misleading because the generated effect is not a reverb simulation. The first reverberations consisted of a looped magnetic tape, deleting, writing and reading heads, as well as the drive mechanism. The signal was recorded on the tape by the recording head, then played back by a set of readout heads with adjustable spacing, and finally erased by the erasing head.

An example of such a camera is the Polish Sochor K84.

wiki

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