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PRECOMPRESSION_SHAPER

2014-11-16 00:13  
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PRECOMPRESSION_SHAPER
Improves effective signal strength of SSB transmitter by shaping AF frequency response ahead of audio compressor. Low-noise FET preamp providing initial gain for high-impedance microphone is followed by low- and high-rolloff circuit giving 15-dB boost or roll off to frequencies centered at about 1 kHz.-J. J. Schultz, Adding dBs to the Audio Compressor, 73 Magazine, May 1974, p 21-23 and 25.