Method and system for testing temperature tolerance limit of loudspeaker
US9877127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for testing a temperature tolerance limit of a loudspeaker. The method includes: selecting a test signal, and determining a test output voltage as a rated voltage of the loudspeaker, so that the loudspeaker reaches a rated amplitude; determining a gain boosting frequency point according to a resonant frequency of the loudspeaker; performing a plurality of tests for the loudspeaker, and in each test controlling the test signal to maintain the gain constant in a frequency band lower than the gain boosting frequency point and increase the gain in a frequency band higher than the gain boosting frequency point, testing and recording a temperature of the loudspeaker till the loudspeaker fails, and recording a temperature at the time of the failure; and determining a highest temperature that is tolerable by the loudspeaker before the loudspeaker fails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.