Title:
車両用キャビンのための屋内通信システム
Document Type and Number:
Japanese Patent JP5694063
Kind Code:
B2
Abstract:
The invention is directed to a method for automatically determining an equalizing filter characteristic for an indoor communication system of a vehicular cabin, the indoor communication system comprising at least one loudspeaker and at least one microphone, comprising the steps of emitting a predetermined test signal by a loudspeaker, in particular, by one loudspeaker, of the indoor communication system, receiving the test signal by a microphone, in particular, by one microphone, of the indoor communication system to obtain a received test signal, automatically determining a transfer function in the frequency domain based on the test signal and the received test signal, automatically determining an equalizing filter characteristic based on the transfer function.
Inventors:
Tim Howrick
Gerhard Uwe Schmidt
Gerhard Uwe Schmidt
Application Number:
JP2011131638A
Publication Date:
April 01, 2015
Filing Date:
June 13, 2011
Export Citation:
Assignee:
Herman Becker Automotive Systems GM Behr
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:
| JP5090856A | ||||
| JP9247787A | ||||
| JP2004537233A | ||||
| JP2001095083A | ||||
| JP6164280A | ||||
| JP7143034A | ||||
| JP7240993A | ||||
| JP2001346299A | ||||
| JP10257585A | ||||
| JP63001295A |
Foreign References:
| WO2003010996A1 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita