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Effect of Flicker Noise on Audio Signal Reproduction

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The effect of multiplicative flicker noise superimposed on audio equipment on the sense of hearing was considered. Variable resistors used for volumes generate flicker noise, which indicates that it acts multiplicatively on the signal flowing through it. Flicker noise measurements were made for some variable resistors. In addition, the audition test was conducted to investigate the perceptible magnitude of the case where the flicker noise acts on the signal in a multiplicative manner. As a result, it was concluded that untrained individuals rarely could discern the multiplicative effect of volume flicker noise.

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AES - Audio Engineering Society