LandOfFree - US Patents - Listing for Telephonic communications,Substation or terminal circuitry,For loudspeaking terminal

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Line interface with analog echo cancellation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loop gain processing system for speakerphone applications

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaker gain correction for a hands-free telephone terminal

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaker telephone device comprising a novel noise suppressin

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaker volume range control

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaking telephone instrument

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaking telephone set having an anti-Larsen device for inst

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaking telephone station including directional microphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Loudspeaking telephone with a frequency shifting circuit

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Low current signal compression circuit

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Message playback concurrent with speakerphone operation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for canceling tone signal noise generated w

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for multiparty collaboration enhancement

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for outbound wave subtraction using a...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for personalized conference and...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Method and apparatus for volume and intelligibility control for