Patent ID: 7925004

Claim:
A speakerphone, comprising: a housing; at least one microphone; a speaker arranged within the housing such that the speaker is disposed in a zone of insensitivity of the at least one microphone and radiates sound along a radiation axis away from the at least one microphone and towards a surface against which the housing abuts; wherein the sound radiation axis of the speaker is disposed generally perpendicularly to the abutting surface; wherein the at least one microphone comprises at least two bi-directional microphones having respective axes of maximum sensitivity disposed generally orthogonal to each other and parallel to the abutting surface; wherein the speaker resides in a common lower zone of insensitivity of the at least two microphones; wherein the bi-directional microphones are disposed below an upper surface of the housing; and wherein the housing includes a plurality of tubular sound channels, each having an entry end originating at the upper surface of the housing and an exit end acoustically coupled to a respective opposite face of a pressure sensing element of one of the microphones.