公开(公告)号：US20180048973A1

公开(公告)日：2018-02-15

申请号：US15553414

申请日：2015-12-17

Applicant: GOERTEK.INC

Inventor： Kang PING ,  Xinfeng YANG ,  Jie WEI

IPC: H04R29/00 ,  H04R23/00

CPC classification number: H04R29/00 ,  H04R3/007 ,  H04R23/002 ,  H04R29/003

Abstract: Disclosed are a method, system and controller for simultaneously verifying amplitude and temperature parameters of an electrical-acoustic conversion device, including: inputting a sweep signal to the electrical-acoustic conversion device; testing the amplitude of the electrical-acoustic conversion device while adjusting the gain of the whole frequency band of the sweep signal until the maximum value of the tested amplitude is a maximum amplitude parameter Xmax, and testing the temperature of a voice coil at this moment; and if the tested temperature of the voice coil at this moment is higher or lower than Tmax, gradually reducing/increasing the gain of the sweep signal in the frequency band above a gain improvement frequency point until the tested temperature of the voice coil is Tmax, and then maintaining the gain of the sweep signal for a predetermined period of time and then testing the performance of the electrical-acoustic conversion device.

公开(公告)号：US20180031683A1

公开(公告)日：2018-02-01

申请号：US15551203

申请日：2015-11-16

Applicant: Goertek.Inc

Inventor： Kang PING ,  Xinfeng YANG

IPC: G01S7/521 ,  H04R17/00

CPC classification number: G01S7/521 ,  B06B1/0644 ,  G01S7/539 ,  G01S15/88 ,  G06F3/017 ,  G06F3/043 ,  G10K9/22 ,  H04R17/00

Abstract: The present invention discloses a combined structure of a piezoelectric receiver and an ultrasonic generator comprises a piezoelectric plate, an ultrasonic signal generator, an audio signal input circuit and a switching circuit, wherein the input end of the switching circuit is connected with the ultrasonic signal generator and the audio signal input circuit, respectively, so as to switch therebetween; and the output end of the switching circuit is connected with the piezoelectric plate. The technical effect of the present invention is that the piezoelectric receiver and the ultrasonic generator are combined, such that functions of the receiver and the ultrasonic generator can be achieved only through one piezoelectric plate, saving the cost and the space.