Patent ID: 8355521
Filing Date: 2013-01-15
Classification: B60R,H04N,H04R

Abstract:
1. An interior rearview mirror system of a vehicle comprising: an interior rearview mirror assembly comprising a reflective element and a casing, said interior rearview mirror assembly being adapted for attachment to an interior portion of the vehicle; at least one microphone positioned in, at or adjacent to said interior rearview mirror assembly and having first and second inlet ports for receiving audible signals from within the vehicle cabin; an acoustic cover positioned over said first and second inlet ports of said at least one microphone, said acoustic cover comprising an outer air flow limiting layer and at least one inner air flow limiting layer, said at least one inner air flow limiting layer being disposed at least partially over said first and second inlet ports and said outer air flow limiting layer being disposed at least partially over and spaced from said at least one inner air flow limiting layer and defining a space therebetween, said outer air flow limiting layer and said at least one inner air flow limiting layer being configured to substantially limit air flow therethrough; and an acoustic barrier positioned across said microphone and between said first and second inlet ports, said acoustic barrier being configured to substantially acoustically isolate said first inlet port from said second inlet port.