公开(公告)号：US09877127B2

公开(公告)日：2018-01-23

申请号：US15501056

申请日：2015-12-07

Applicant: GOERTEK INC.

Inventor： Kang Ping ,  Xinfeng Yang ,  Dong Qiu

IPC: H04R29/00 ,  H04R3/04 ,  H03G3/30

CPC classification number: H04R29/001 ,  H03G3/3005 ,  H04R3/007 ,  H04R3/04 ,  H04R29/008

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.