The audio noise generator

Published:2011/6/16 0:18:00 Author:Borg | Keyword: audio noise generator | From:SeekIC

In the figure is a simple circuit which can generate white and pink noises. The voltage steady pipe is the crystal triode VTI, which generates wide-band noises in the Zener breakdown state. After being amplified by VT2, a white noise of 150mV or so is output by capacitor C2. To convert the white noise into pink noise, we use a filter net, each frequency doubler of this filter provides a 3dB reduction. As the filter reduces much of the noise, so we need an amplifier to recover the output LEV.



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