Invention Grant
- Patent Title: Method and device for testing a loudspeaker arrangement
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Application No.: US14361722Application Date: 2012-11-30
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Publication No.: US09277342B2Publication Date: 2016-03-01
- Inventor: Thomas Lukasczyk , Waldemar Rempel
- Applicant: Thomas Lukasczyk , Waldemar Rempel
- Applicant Address: DE Hannover
- Assignee: Continental Automotive GmbH
- Current Assignee: Continental Automotive GmbH
- Current Assignee Address: DE Hannover
- Agent Cozen O'Connor
- Priority: DE102011087676 20111202
- International Application: PCT/EP2012/074020 WO 20121130
- International Announcement: WO2013/079629 WO 20130606
- Main IPC: H04R29/00
- IPC: H04R29/00

Abstract:
A loudspeaker arrangement includes a loudspeaker and a trigger circuit for electrically triggering the loudspeaker. The loudspeaker has a loudspeaker diaphragm for generating an acoustic signal. A digital pulse test signal is applied to the loudspeaker via the trigger circuit during a respective test sequence, the digital pulse test signal having a duty cycle that is predetermined to change such that the duty cycle increases over a plurality of periods of the test sequence at the beginning of the test sequence, and the duty cycle decreases over a plurality of periods of the test sequence at the end of the test sequence. During the respective test sequence, a measurement variable, representative of a voltage drop on a reference circuit connected in series to the loudspeaker, is detected, and the loudspeaker arrangement is classified as functional on the basis of a comparison of the measurement variable and a predetermined reference value.
Public/Granted literature
- US20150036833A1 Method and device for testing a loudspeaker arrangement Public/Granted day:2015-02-05
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