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Quality factor-based device and method for detecting loudspeaker module sealing

A technology of quality factor and speaker module, which is applied in the field of sound and electricity, can solve the problems of sound quality damage and misjudgment of speaker modules, and achieve the effects of reducing detection costs, reducing secondary investment, and preventing damage and misjudgment

Active Publication Date: 2015-04-15
GOERTEK INC
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Problems solved by technology

[0007] In view of the above problems, the object of the present invention is to provide a device and method for detecting the tightness of the speaker module based on the quality factor, and obtain the impedance and the quality factor of the speaker module according to the airflow resistance generated when the speaker module is working, so as to detect the speaker module. The airtightness of the module is to solve the problem that the sound quality of the speaker module is damaged and misjudged when it enters the water

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  • Quality factor-based device and method for detecting loudspeaker module sealing
  • Quality factor-based device and method for detecting loudspeaker module sealing

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Embodiment Construction

[0044] In the following description, for illustrative purposes, many specific details are set forth in order to provide a comprehensive understanding of one or more embodiments. However, it is obvious that these embodiments can also be implemented without these specific details.

[0045] Aiming at the problems of damaging the sound quality of the speaker module and prone to misjudgment when detecting the sealing of the speaker module through the water immersion method and the lip sound test method proposed above, the present invention uses the airflow generated by the speaker module according to the magnitude of the airflow resistance. Calculate the quality factor of the speaker module, and detect whether the speaker module is leaking according to its quality factor, which can effectively prevent the sound quality of the speaker module from being damaged and subjective misjudgment. At the same time, the equipment used in the present invention is the basic instrument in the perfor...

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Abstract

The invention provides a quality factor-based device and method for detecting loudspeaker module sealing. The quality factor-based device comprises a signal source, a power amplifier, a precision resistor, a voltage testing unit and a sealing tool. The power amplifier is used for amplifying signals sent from the signal source. The precision resistor is sequentially connected between the power amplifier and a loudspeaker module for testing. The loudspeaker module for testing, the amplifier and the precision resistor are in a series loop. The voltage testing unit is used for detecting voltage at two ends of the precision resistor. The sealing tool is used for sealing a sound hole of the loudspeaker module for testing. According to the arrangement, by the aid of airflow resistance generated during running of the loudspeaker, loudspeaker impedance and quality factors are acquired, thus the sealing of the loudspeaker module is detected, and the problem that after entering water, the sound quality of the loudspeaker is damaged and misjudged is solved.

Description

Technical field [0001] The present invention relates to the technical field of sound and electricity, and more specifically, to a device and method for detecting the sealing performance of a speaker module based on a quality factor. Background technique [0002] With the rapid development of electroacoustic technology, the performance requirements of the speaker module are getting higher and higher. The airtightness, which is an important factor leading to the distortion of the speaker module, directly affects the sound quality of the speaker module. Airtightness testing is one of the important testing items in the production process of speaker modules. [0003] At present, the main methods for testing the sealing of speaker modules include water immersion method and lip sound test method. [0004] Water immersion method: Directly immerse the speaker module in water, and use the speaker module for sound playback. If the speaker module shell leaks, bubbles will appear directly in the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/40
Inventor 吴同海刘永军
Owner GOERTEK INC
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