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Comfort noise generating apparatus

  • US 6,625,284 B1
  • Filed: 03/17/1999
  • Issued: 09/23/2003
  • Est. Priority Date: 07/02/1998
  • Status: Expired due to Fees
First Claim
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1. A comfort noise generating apparatus for generating a comfort noise according to a voice signal from which an unnecessary component has been removed and for adding said comfort noise to said voice signal, comprising:

  • noise generating means for generating a noise to be multiplexed to the voice signal after said unnecessary component has been removed;

    signal level analyzing means for measuring a signal power of the voice signal before said unnecessary component is removed;

    varying means for varying characteristics of the noise which is generated by said noise generating means in accordance with an analysis result by said signal level analyzing means and for forming a comfort noise; and

    synthesizing means for multiplexing the comfort noise formed by said varying means to the voice signal after the removal of said unnecessary component.

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