A modular microphone assembly housed in a handsfree telephone apparatus provides an environment that is isolated from a loudspeaker installed within the apparatus and through which environment the directional and frequency response characteristics of a directional microphone capsule contained within a closable cavity of a microphone mounting receptacle in the assembly are altered via a predetermined internal surface configuration of the receptacle to improve the performance of the apparatus.
申请公布号
CA1297578(C)
申请公布日期
1992.03.17
申请号
CA19880559950
申请日期
1988.02.26
申请人
BELL-NORTHERN RESEARCH LTD.
发明人
POCOCK, MARK W.;BASNETT, BRADLEY P.;ELDERSHAW, MICHAEL K.;FATOVIC, PETER;GAGNON, JACQUES;GOLDMANN, NAHUM;LAFRANCE, CONRAD D.;LANGENBERG, ANTHONY J.;MCKEEN, WILBERT J.