Invention Grant
US09332366B2 Loudspeaker noise inspection method, loudspeaker noise inspection device and recording medium for recording a loudspeaker noise inspection program
有权
扬声器噪声检测方法，扬声器噪声检测装置和用于记录扬声器噪声检查程序的记录介质
- Patent Title: Loudspeaker noise inspection method, loudspeaker noise inspection device and recording medium for recording a loudspeaker noise inspection program
- Patent Title (中): 扬声器噪声检测方法，扬声器噪声检测装置和用于记录扬声器噪声检查程序的记录介质
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Application No.: US14274856Application Date: 2014-05-12
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Publication No.: US09332366B2Publication Date: 2016-05-03
- Inventor: Chiang-Kai Wu
- Applicant: LITE-ON OPTO TECHNOLOGY (CHANGZHOU) CO., LTD. , LITE-ON TECHNOLOGY CORP.
- Applicant Address: CN Jiangsu Province TW Taipei
- Assignee: Lite-On Opto Technology (Changzhou) Co., Ltd.,Lite-On Technology Corp.
- Current Assignee: Lite-On Opto Technology (Changzhou) Co., Ltd.,Lite-On Technology Corp.
- Current Assignee Address: CN Jiangsu Province TW Taipei
- Agency: Rosenberg, Klein & Lee
- Priority: CN201310181305 20130515
- Main IPC: H04R29/00
- IPC: H04R29/00 ; H04R3/00
Abstract:
A loudspeaker noise inspection method is to be implemented by an electronic device and includes the steps of: obtaining a frequency sweeping audio signal from an audio output generated by a loudspeaker in response to a frequency sweeping input signal; performing differentiation upon the frequency sweeping audio signal so as to generate a differentiated frequency sweeping audio signal; and dividing the differentiated frequency sweeping audio signal by a constant which is greater than 2π times a maximum frequency of the frequency sweeping audio signal, so as to obtain an attenuated frequency sweeping audio signal for inspection of a noise pulse in the frequency sweeping audio signal.
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