公开(公告)号：US20170257718A1

公开(公告)日：2017-09-07

申请号：US15501056

申请日：2015-12-07

Applicant: GOERTEK INC.

Inventor： Kang PING ,  Xinfeng YANG ,  Dong QIU

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

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.

公开(公告)号：US20170045480A1

公开(公告)日：2017-02-16

申请号：US15306467

申请日：2015-04-01

Applicant: GOERTEK INC.

Inventor： Dong QIU ,  Chao JIANG

IPC: G01N29/12 ,  G01H3/00

CPC classification number: G01N29/12 ,  G01H3/00 ,  G01H13/00 ,  G01N2291/014 ,  H04R3/002 ,  H04R5/02 ,  H04R29/001

Abstract: A method and a system for acquiring the natural frequency of a diaphragm, wherein, the method comprises: selecting test frequency points in a closed space, converting an electric signal into an acoustic signal, directing sound into the closed space, and acquiring the acoustic pressure of each test frequency point; adjusting the electric signal until the acoustic pressure of each test frequency point is the same; converting the adjusted electric signal into an acoustic signal; acquiring the displacement generated by the vibration of the diaphragm; and taking the frequency corresponding to the maximum displacement of the diaphragm as the natural frequency of the diaphragm. By adopting the method and system, the natural frequency of the diaphragm is determined by acquiring the maximum displacement of the diaphragm. Moreover, the process of acquiring the natural frequency of the diaphragm is not affected by surrounding environment, and therefore the acquired result is more accurate.

Abstract translation: 一种用于获取隔膜的固有频率的方法和系统，其中，所述方法包括：在闭合空间中选择测试频率点，将电信号转换为声信号，将声音引导到封闭空间中，并获取声压 每个测试频点; 调整电信号直到每个测试频点的声压相同; 将调整后的电信号转换为声信号; 获取由隔膜的振动产生的位移; 并将与隔膜的最大位移对应的频率作为隔膜的固有频率。 通过采用该方法和系统，通过获取隔膜的最大位移来确定膜片的固有频率。 此外，获取隔膜的固有频率的过程不受周围环境的影响，因此获得的结果更准确。