Audio Ditherizing Circuit For Digital Audio Use

  
By adding a small amount of noise to a signal to be digitized (about 0.7 bit): where: n = #
Audio Ditherizing Circuit For Digital Audio Use - schematic

of bits. For example, 8 bits and 2 V p-p would be 0.0055 V. This circuit uses a transistor (Ql) and an amplifier (Q2 and Ul) to generate the noise signal. Rll controls the noise injection and R12 controls the gain of the system.




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