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A method and device for detecting and processing sound cavity leakage

A sound cavity and sound source technology, applied in the field of communication, can solve the problem that the low-frequency resonance frequency of the sound cavity cannot be tested, and achieve the effect of preventing noise

Active Publication Date: 2015-11-18
DONGGUAN YULONG COMM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide a method for detecting the leakage of the sound cavity, which aims to solve the problem that the low-frequency resonance frequency of the sound cavity with the combined structure of the horn and the cavity cannot be tested in the prior art during the assembly and testing process of the mobile communication terminal. question

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  • A method and device for detecting and processing sound cavity leakage
  • A method and device for detecting and processing sound cavity leakage
  • A method and device for detecting and processing sound cavity leakage

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] see figure 1 The method for detecting sound cavity leakage provided by Embodiment 1 of the present invention includes the following steps:

[0039] S101, play a test sound source;

[0040] In Embodiment 1 of the present invention, the test sound source is a test sound source stored in the device under test or a test sound source stored in a device connected to the device under test. The test sound source is a sweeping signal whose signal range covers the low-frequency resonance frequency. The sweeping signal is a combination signal of equal amplitude and multiple frequencies, and the frequency point is set according to the needs.

[0041] S102. Sampling electrical signals at both ends of the speaker of the device under test;

[0042] In the first embodiment of the present invention, step S102 is specifically to collect the output signal amplitudes at both ends of the speaker of the device under test at each frequency point; the two ends of the speaker refer to the two...

Embodiment 2

[0052] see figure 2 , the device for detecting sound cavity leakage provided by Embodiment 2 of the present invention includes:

[0053] Playing module 11, is used for playing test sound source;

[0054] In the second embodiment of the present invention, the test sound source is a test sound source stored in the device under test or a test sound source stored in a device connected to the device under test. The test sound source is a sweeping signal whose signal range covers the low-frequency resonance frequency. The sweeping signal is a combination signal of equal amplitude and multiple frequencies, and the frequency point is set according to the needs.

[0055] The sampling module 12 is used for sampling the electrical signal at both ends of the horn of the device under test;

[0056] In the second embodiment of the present invention, the sampling module 12 is specifically used to collect the output signal amplitude at each frequency point at both ends of the speaker of th...

Embodiment 3

[0065] see image 3 The method for processing sound cavity leakage provided by Embodiment 3 of the present invention includes the following steps:

[0066] Step S201, when the leakage of the sound cavity is detected through the method for detecting sound cavity leakage provided by the second embodiment of the present invention, call the corresponding equalizer parameters according to the deviation value between the low-frequency resonance frequency of the sound cavity and the preset low-frequency resonance frequency Or filter parameters to filter the electrical signal to achieve the purpose of preventing noise, broken sound, and speaker burnout. Among them, the equalizer parameters or filter parameters are preset, and different deviation values ​​​​correspond to different equalizer parameters or Filter parameters, different equalizer parameters or filter parameters can perform different degrees of filtering processing on the electrical signal, so as to achieve the purpose of n...

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Abstract

The invention is suitable for the field of communication and provides a method and device for detecting and processing sound cavity leakage. The method for detecting the sound cavity leakage comprises the following steps of: playing a test sound source; sampling electric signals at two ends of a horn of tested equipment; calculating the maximum value of an amplitude value of the sampled electric signal, wherein a frequency point corresponding to the maximum value is low-frequency resonance frequency of a sound cavity; and calculating a deviation value between the low-frequency resonance frequency of the sound cavity and preset low-frequency resonance frequency, and if the deviation value exceeds a preset range, determining that the sound cavity leaks. By the method, the problem of the sound cavity leakage caused by factors such as improper design, low assembled quality and low quality of materials of a combined type structure of the horn and a cavity can be solved.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a method and device for detecting and processing sound cavity leakage. Background technique [0002] Generally, the back sound cavity of the speaker of a mobile communication terminal (such as a mobile phone) or a speaker of a sound box requires good airtightness. If the back sound cavity leaks, it will cause noise, broken sound, and may cause the speaker to burn out. Judging whether the rear sound cavity of the speaker is leaking can be judged by the low frequency resonance frequency of the test sound cavity. The low frequency resonance frequency of a sound cavity with good airtightness will be higher than the low frequency resonance frequency of the single speaker. The low-frequency resonance frequency is an important parameter of the speaker and the speaker cavity. It is usually used to judge the bass performance of the speaker and the speaker cavity. The lower the low-fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
Inventor 张捍东
Owner DONGGUAN YULONG COMM TECH
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