A stereo synthesizer is a signal processing device that produces a "fake stereo" result in a mono source. During processing, it does not disrupt the audio spectral balance, adding noise and causing distortion. It divides the mono signal into 5 frequency bands, of which 36 frequency bands are on one channel and the other channel puts the other two frequency bands. It is adjusted by two circuits, and the potentiometer is used to adjust the left and right channel balance.
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