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Soft mute circuit

  • US 6,931,124 B1
  • Filed: 01/13/2000
  • Issued: 08/16/2005
  • Est. Priority Date: 01/13/2000
  • Status: Expired due to Term
First Claim
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1. A circuit for unobtrusively masking transient signals in an electronic device by changing gain, said circuit comprising:

  • an amplifier having a first input for receiving control data and a second input for receiving a signal;

    a register having an output coupled to said first input; and

    an adder having an output coupled to said register for storing data in said register and having a pair of inputs, the output of said register also being coupled to one of said pair of inputs, the second of said pair of inputs being coupled to a source of slope data, said adder having a control input for adding or subtracting the slope data from the output of the register;

    wherein said adder adjusts the gain of said amplifier in accordance with the slope data to change gain gradually.

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