The reproduction of sound may be enhanced by the addition of artificial reverberation when the reproduced sound is below the optimum value of reverberation. Reverberation consists of multiple reflections in which each pencil of sound suffers a decrease in intensity with each reflection. This may be simulated by passing the reproduced sound through a series of transducers with progressive delay and attenuation. A synthetic reverberator has been developed with a loudspeaker, pipe, and microphone delay unit in combination with a feedback system.
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