Loudspeaker cone excursion estimation using reference signal
US-2016373871-A1 · Dec 22, 2016 · US
Method and device for testing a loudspeaker arrangement
US9277342B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9277342-B2 |
| Application number | US-201214361722-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 30, 2012 |
| Priority date | Dec 2, 2011 |
| Publication date | Mar 1, 2016 |
| Grant date | Mar 1, 2016 |
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Abstract
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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.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for testing a loudspeaker arrangement ( 10 ) having a loudspeaker ( 20 ) that has a loudspeaker membrane configured to generate an acoustic signal, and an actuation circuit ( 30 ) configured to electrically actuate the loudspeaker ( 20 ), the method comprising: applying, by the actuation circuit ( 30 ), a digital pulse test signal (P) with a predetermined changing duty cycle to the loudspeaker ( 20 ) during a respective test sequence duration…
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Classifications
- H04R29/003Primary
Electricity · mapped topic
- H04R29/001Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9277342B2 cover?
- 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 suc…
- Who is the assignee on this patent?
- Lukasczyk Thomas, Rempel Waldemar, Continental Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification H04R29/003. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).