4. Telephonic communications
  5. Substation or terminal circuitry
  6. For loudspeaking terminal

David Dal Farra

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Dynamic optimization of handsfree microphone gain

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Loudspeaker-dependent audio compression

Electrical audio signal processing systems and devices – Including frequency control – Having crossover filter
Reexamination Certificate

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Method and apparatus for echo control in a communication system

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Method and apparatus for inhibiting echo in a channel of a...

Multiplex communications – Duplex – Transmit/receive interaction control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1252653

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