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A loudspeaker T/S parameter testing method and testing device

A technology of parameter testing and testing methods, which is applied in the field of loudspeakers, can solve problems such as poor applicability, low efficiency, and inability to test speaker modules online, and achieve the effect of shortening test time and improving efficiency

Pending Publication Date: 2017-08-18
SHENZHEN JINGTUO INNOVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: It is impossible to directly measure the characteristic parameters of the side-firing speaker module with non-leaking diaphragm. It is necessary to punch holes in the upper shell of the front cavity of the speaker module and seal it with a transparent sheet before testing
This method has low efficiency and poor applicability, and cannot perform online testing on speaker modules

Method used

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  • A loudspeaker T/S parameter testing method and testing device
  • A loudspeaker T/S parameter testing method and testing device
  • A loudspeaker T/S parameter testing method and testing device

Examples

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Embodiment 1

[0057] The specific implementation of this embodiment is as figure 1 and figure 2 shown. in, figure 1 It is a flow chart of the testing method of the T / S parameter of the loudspeaker unit in the first embodiment of the present invention, figure 2 It is a structural schematic diagram of the loudspeaker T / S parameter testing device and the loudspeaker unit according to the first embodiment of the present invention. according to figure 2 As shown, the loudspeaker T / S parameter testing device includes a first cover plate 2 , a second cover plate 3 and a sealing member 4 . The inside of the first cover plate 2 is provided as an opening accommodating cavity, and the accommodating cavity is larger than the volume of the measured object speaker unit 1 , and the bottom of the accommodating cavity is provided with a protrusion 21 near the middle. The speaker unit 1 is placed inside the cavity, and the back of the speaker unit 1 is connected to the protrusion 21 , and there are g...

Embodiment 2

[0088] Figure 6It is a schematic diagram of the side-firing speaker module and the sealing member of the second embodiment. The difference between the speaker module and the speaker unit is that the speaker module itself includes a speaker unit and a housing for accommodating the speaker unit. A closed back cavity and an open front cavity are formed between the speaker unit and the shell, that is, the speaker module itself has a back cavity. When testing T / S parameters, there is no need to design a back cavity for the speaker module. The difference between the side-firing speaker module and the front-firing speaker module is that the sound outlet of the front-firing speaker module is located directly opposite the speaker diaphragm, while the sound outlet of the side-firing speaker module is located on the side. The speaker module provided in this embodiment is the side sound speaker module 7 . The inside of the side sound speaker module 7 includes a speaker unit 1, the spea...

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Abstract

The invention discloses a loudspeaker T / S parameter testing method and testing device. Through arrangement of the testing device with a sealing function, the electro-acoustic parameter group of a loudspeaker before sealing and the impedance curve of the loudspeaker after sealing are tested separately, then the characteristic parameters of the electro-acoustic parameter group and the impedance curve of the loudspeaker after sealing are extracted separately, and the T / S parameter of the loudspeaker is calculated according to a standard formula of acoustic system equipment, so that a single loudspeaker or a loudspeaker module can be quickly tested online to obtain the T / S parameter without damaging the loudspeaker. The testing time is shortened, and the efficiency is improved.

Description

technical field [0001] The invention relates to the loudspeaker field, in particular to a loudspeaker T / S parameter testing method and testing device. Background technique [0002] The T / S parameter is an important parameter used to measure the performance of the loudspeaker. It is mostly used in the research of the loudspeaker. At present, the existing methods that can take into account the research and online testing of the T / S parameter include the laser displacement measurement method or the additional sound capacity method. [0003] The laser displacement measurement method uses visible light to produce different refractions on the displacement of the speaker diaphragm, and then obtains multiple characteristic parameters of the speaker, and obtains the T / S parameter through calculation. Advantages of the laser displacement measurement method: it can accurately measure the position and displacement of the speaker diaphragm under test through non-contact. Its disadvantag...

Claims

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Application Information

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IPC IPC(8): H04R29/00
CPCH04R29/001Y02T90/00
Inventor 顾善勇闫鑫
Owner SHENZHEN JINGTUO INNOVATION TECH
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