Microphone/loudspeakers and systems using multiple...

Details Microphone/loudspeakers and systems using multiple... Microphone/loudspeakers and systems using multiple...

H - Electricity

04

R

H04R 27/00 (2006.01) H04R 1/40 (2006.01)

Patent

CA 2146688

- 13 - MICROPHONE/LOUDSPEAKERS AND SYSTEMS USING MULTIPLE MICROPHONE/LOUDSPEAKERS ABSTRACT Microphone/loudspeakers include a microphone arrangement and a loudspeaker and means to operate as micro- phone/loudspeakers in the quiescent mode and to shift to a speakerphone mode in response to a battery voltage from a telephone line. In the quiescent mode the microphone arrangement and the loudspeaker operate substantially independent of each other while in the speakerphone mode they interact on the basis of their respective signal strengths. In a system, the microphone/loudspeakers connect to other microphone/loudspeakers so that the microphone arrangement of one microphone/loudspeaker couples in tandem to the microphone arrangement of other microphone/loud- speakers, and the loudspeaker of one microphone/loudspeaker couples in tandem to loudspeaker of other microphone/loud- speakers.

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