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1. (WO2018082912) MICROPHONE SYSTEM FOR A MOTOR VEHICLE WITH DYNAMIC DIRECTIVITY

Pub. No.:    WO/2018/082912    International Application No.:    PCT/EP2017/076428
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Wed Oct 18 01:59:59 CEST 2017
IPC: H04R 1/20
H04R 1/32
Applicants: AUDI AG
Inventors: PERL, Martin
Title: MICROPHONE SYSTEM FOR A MOTOR VEHICLE WITH DYNAMIC DIRECTIVITY
Abstract:
The invention relates to a microphone system (2) for a motor vehicle (1), having a microphone housing (3) in which a first microphone (11), a second microphone (12) and a third microphone (13) are arranged, having a signal processing device (4) that is configured to process respective signals provided by the microphones (11, 12, 13), wherein the signal processing device (4) is configured to process the signals of the first and second microphones (11, 12) in a first mode of operation such that a driver directivity (A1) oriented to a first position of a driver's seat (7) of the motor vehicle (1) is provided, and to process the signals of the second and third microphones (12, 13) in the first mode of operation such that a front-seat passenger directivity (B1) oriented to a first position of a front-seat passenger's seat (8) of the motor vehicle (1) is provided, wherein the signal processing device (4) is configured to process the signals of the first and third microphones (11, 13) in a second mode of operation such that an alternative driver directivity (A2) is provided that is oriented to a second position of the driver's seat (7), or to process the signals of the second and third microphones (12, 13) in the second mode of operation such that an alternative front-seat passenger directivity (B2) is provided that is oriented to a second position of the front-seat passenger's seat (8), in order to minimise a fluctuation in a signal quality for a variation in a size of driver or front-seat passenger.