Jun 1, 1993
Feb 27, 1992
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A digital signal processor is provided with the facility to measure accurately, and nonintrusively, the levels of noise and/or speech signals appearing on an in-service network connection.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
- [Patents Count]
|Patent Info||(Count)||# Cites||Year|
|4,552,996 Method and apparatus for evaluating noise level on a telephone channel||20||1983|
|4,363,938 Method of and apparatus for echo detection in voice channel signals||10||1980|