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Title:
INDOOR COMMUNICATION SYSTEM FOR VEHICULAR CABIN
Document Type and Number:
Japanese Patent JP2011205692
Kind Code:
A
Abstract:

To provide a method for automatically determining an equalizing filter characteristic of an indoor communication system for a vehicular cabin.

The indoor communication system includes at least one loudspeaker and at least one microphone. The communication system includes the steps of: transmitting a predetermined test signal by the loudspeakers of an indoor communication system, especially the one loudspeaker; receiving the test signal by the microphones, especially the one microphone, of an indoor communication system to get the received test signal; automatically determining a transfer function over a frequency range based on the test signal and the received test signal; and automatically determining an equalizing filter characteristic based on the transfer function.


Inventors:
HAULICK TIM
SCHMIDT GERHARD UWE
Application Number:
JP2011131638A
Publication Date:
October 13, 2011
Filing Date:
June 13, 2011
Export Citation:
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Assignee:
HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH
International Classes:
H04R1/40; H04R3/04; G10K11/178; G10K15/00; H03G5/00; H03G5/16; H03H21/00; H04R3/00; H04R5/02; H04R27/00; H04R29/00
Domestic Patent References:
JP2004537233A2004-12-09
JP2001095083A2001-04-06
JPH06164280A1994-06-10
JPH07143034A1995-06-02
JPH07240993A1995-09-12
JP2001346299A2001-12-14
JPH0590856A1993-04-09
JPH09247787A1997-09-19
Foreign References:
WO2003010996A22003-02-06
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita



 
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