4. Telephonic communications
  5. Echo cancellation or suppression

Tamara L. Logan

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Acoustic echo canceller with fast volume control compensation

Telephonic communications – Subscriber line or transmission line interface – Network interface device
Reexamination Certificate

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System and method for controlling a filter to enhance...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate

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System and method for near-end talker detection by spectrum...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2109812

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