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 o

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

Experimental program
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Example Embodiment

[0056] Example one:

[0057] The specific implementation of this embodiment is as follows figure 1 with figure 2 Shown. among them, figure 1 It is a flow chart of a method for testing the T / S parameters of a speaker unit in the first embodiment of the present invention, figure 2 It is a schematic diagram of the structure of the speaker T / S parameter test device and the speaker unit in the first embodiment of the present invention. according to figure 2 As shown, the speaker T / S parameter testing device includes a first cover plate 2, a second cover plate 3 and a sealing member 4. The interior of the first cover plate 2 is set as a receiving cavity with an opening, and the receiving cavity is larger than the volume of the speaker unit 1 of the object to be measured, and the bottom of the receiving cavity is provided with a protrusion 21 near the middle position. The speaker unit 1 is placed inside the accommodating cavity, and the back of the speaker unit 1 is connected to t...

Example Embodiment

[0087] Embodiment two:

[0088] Image 6 It is a schematic diagram of the side-sound 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 the speaker unit and the housing that contains the speaker unit. A closed back cavity and an open front cavity are formed between the speaker unit and the housing, 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 sounding speaker module and the front sounding speaker module is that the sound outlet of the front sounding speaker module is located directly opposite to the speaker diaphragm, while the sound outlet of the side sounding speaker module is located on the speaker Side. The speaker module provided in this embodiment is a side-sound speaker module 7. The inside of the side-sound speaker modul...

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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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