Test method for front-sounding loudspeaker and system of test method

A test method and test system technology, applied in the direction of electrical components, can solve problems such as unsatisfactory results, waste of time and materials, and high investment costs, so as to improve research and development efficiency, reduce research and development costs, and improve customer experience.

Inactive Publication Date: 2017-03-08
SHENZHEN SUNWAY ACOUSTICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, speaker testing generally adopts the direct test of speaker products, but time an

Method used

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  • Test method for front-sounding loudspeaker and system of test method
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  • Test method for front-sounding loudspeaker and system of test method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Please refer to figure 1 , Embodiment one of the present invention is: a kind of testing method of loud speaker, comprises the following steps:

[0077] S1: Establish a speaker simulation model according to the customer's parameter requirements; further, according to the external dimensions and functional requirements of the speaker product provided by the customer, such as the acoustic parameter requirements, the simulation engineer performs simulation calculations to establish a speaker simulation model, but due to the differences between the simulation data and There will be some differences in the real data, therefore, the establishment of the simulation model is to provide the production direction of the actual product.

[0078] S2: Obtain back cavity parameters and vent hole parameters of the sound box simulation model, the back cavity parameters include the total volume of the back cavity and the volume ratio and shape of each back cavity, and the vent hole param...

Embodiment 2

[0088] This embodiment is a specific application scenario of the foregoing embodiments.

[0089] Suppose the customer's requirement for THD is:

[0090] Test signal: sweep 100Hz~20kHz, 1 / 12 multiplier, sine wave calculation method between rated power: IEC standard, 2nd to 5th harmonic distortion.

[0091] Carry out the first simulation completely according to the internal back cavity parameters given by the customer. The test results are as follows: figure 2 As shown, the solid line is the upper limit of the customer's requirement. It can be seen that most of the THD of the product exceeds the upper limit of the customer's requirement after 450HZ. This may be due to the wrong selection of the internal monomer of the speaker, or the internal cavity of the product. Adjust division, after eliminating the former possibility by verification, adjust the number of cavities (increase or decrease) and channel shape size (channel length and depth); for example, in this embodiment, it ...

Embodiment 3

[0093] Please refer to Figure 9 , this embodiment is a test system corresponding to the above-mentioned embodiment, which is a positive speaker, including:

[0094] Establish module 1, which is used to establish a speaker simulation model according to the customer's parameter requirements;

[0095] The first acquisition module 2 is used to obtain the back cavity parameters and vent parameters of the sound box simulation model, the back cavity parameters include the total volume of the back cavity and the volume ratio and shape of each back cavity, and the vent hole parameters include deflation The location and shape of the holes;

[0096] The production module 3 is used to produce the speaker to be tested according to the parameters of the back cavity and the parameters of the vent hole;

[0097] An adjustment module 4, configured to adjust a parameter of the speaker to be tested, and adjust the simulation model of the speaker accordingly;

[0098] The first test module 5 ...

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Abstract

The invention discloses a test method for a front-sounding loudspeaker and a system of the test method. The test method comprises steps of: establishing a loudspeaker simulation model; acquiring back cavity parameters and deflation hole parameters of the loudspeaker simulation model, wherein the back cavity parameters comprise the total volume of back cavities, the volume proportions of the back cavities and the shapes of the back cavities and the deflation hole parameters comprise positions and shapes of deflation holes; according to the back cavity parameters and the deflation hole parameters, manufacturing a to-be-test loudspeaker; adjusting one parameter of the to-be-tested loudspeaker, and correspondingly adjusting the loudspeaker simulation model; testing the adjusted to-be-tested loudspeaker so as to obtain a first data set; testing the adjusted loudspeaker simulation model so as to obtain a second data set; and acquiring correlation between the first data set and the second data set. According to the correlation, a corresponding result can be reflected after a certain parameter is adjusted in a certain condition, so unnecessary risks can be avoided in the preliminary stage of a project design, research and development cost is reduced and research and development efficiency is increased.

Description

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Claims

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Application Information

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Owner SHENZHEN SUNWAY ACOUSTICS TECH CO LTD
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