Patent ID: 7616768
Filing Date: 2009-11-10
Classification: B60R,H04R

Abstract:
1. A vehicle accessory comprising: an accessory housing for attaching to a vehicle; a microphone assembly carried by said accessory housing and comprising at least one transducer, the microphone assembly generating an audio signal; a microphone interface circuit electrically coupled between said transducer and a digital signal processor (DSP) located remote from said vehicle accessory, said microphone interface circuit comprising: wherein said at least one transducer includes a first transducer positioned in a microphone housing for generating a first audio signal and a second transducer positioned in said microphone housing for generating a second audio signal, the front of said first transducer facing a different direction from the front of said second transducer, wherein said transducers are configured such that said microphone assembly exhibits a first polar pattern with null aimed at a driver of the vehicle, and a second polar pattern with a null aimed at a front passenger area of the vehicle.