Method and system for detecting whether loudspeaker foam sticking is qualified or not

Abstract

The invention discloses a method and system for detecting whether loudspeaker foam sticking is qualified or not on the basis of a mobile terminal. The method comprises the steps that a range value of a mobile terminal low-frequency resonance point for judging whether loudspeaker foam sticking is qualified or not is preset; a low-frequency resonance point of the mobile terminal is acquired by conducting recording and extracting a frequency value, corresponding to a first eave peak, of an audio file; whether or not the low-frequency resonance point is within the range of a smallest value to a largest value, if yes, it is judged that sticking is qualified, and if not, sticking is unqualified. According to the method and system, on one hand, products of which sticking is unqualified can be screened out in time, the condition that the unqualified products leave a factory is avoided, the qualified rate of the products can be improved, the sound quality of mobile phones is guaranteed, and the overall quality of the products is improved; on the other hand, the detection cost is relatively lower, operation is easy, the detection time is relatively shorter, and the specialized knowledge requirement on operating personnel is relatively lower.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a method and a system for detecting qualified horn foam placement. Background technique [0002] According to the knowledge of acoustics, speakers usually placed in a certain airtight cavity can exert better performance and have a longer service life. However, due to the current mobile phone production line, the foam placement of the speaker is still manual operation, the operating level of the operator, and the difference in manual operation, resulting in no uniform standard for foam placement, there are sticking deviations, crooked sticking, and foam damage , or even missed stickers, resulting in poor speaker performance and shortened life. And most manufacturers usually only test the raw materials of the speaker and the functions of the whole machine, lacking a separate test of the performance of the speaker, so these problems are often not found in time, resulting i...

AI Technical Summary

Problems solved by technology

The low-frequency resonance point of the speaker usually has a tolerance range. According to acoustic knowledge, if the foam used to seal the cavity is not standardized, the sound of the speaker will leak, and its low-frequency resonance point will move back correspondingly, that is, it will become larger and the frequency band will be narrowed. The stronger the leakage, the larger the low-frequency resonance point and the narrower the frequency band. When the foam is leaked, the leakage will be the largest, the sound quality will be poor, the low-frequency resonance point will be the largest, and the frequency band will be the narrowest, and the life of the speaker will be reduced accordingly.

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