HiFi expandor with De-emphasis

  
it can reduce its gain. The time it takes for the compressor to recover from overload is determined by the rectifier The expander eg capacitor to complete the compressor is shown in FIG. 2-13B. Here is an external op amp is used for the high rate of ascent. The compressor and expander have unity gain at 0 dB. Trim networks are shown for distortion (THD) and DC offset.

HiFi expandor with De-emphasis - img1

The distortion compensation must be done first, with an input of 0 dB at 10 kHz. The shift should be adjusted for minimum bounce envelope with your tips.




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