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Method and apparatus for automatic signal level adustment

  • US 4,947,133 A
  • Filed: 01/19/1988
  • Issued: 08/07/1990
  • Est. Priority Date: 01/22/1987
  • Status: Expired due to Fees
First Claim
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1. Apparatus for automatic signal level adjustment comprising:

  • control means for forming a first control signal which is a function of a weighted sum of a predetermined number, greater than one, of consecutive half cycle peak magnitudes of an input signal, whereby the first control signal is dependent on a frequency content of the input signal, andprocessing means for operating on the input signal using a first control transfer function which varies in accordance with the first control signal to provide an output signal which at least partly depends on the first control signal.

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