Artificial mouth with acoustic tube outputting plane waves

A test method and technology of artificial mouth, applied in the field of artificial mouth, can solve problems such as poor test efficiency

Inactive Publication Date: 2009-07-15
FORTEMEDIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing artificial mouth 10 is only provided with a single opening 121, so only one microphone can be tested at a time, and the test efficiency is not good; in addition, the existing artificial mouth 10 will not be able to perform phase matching tests on multiple microphones at the same time ( Phase Matching Test)

Method used

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  • Artificial mouth with acoustic tube outputting plane waves
  • Artificial mouth with acoustic tube outputting plane waves
  • Artificial mouth with acoustic tube outputting plane waves

Examples

Experimental program
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Embodiment Construction

[0053] see figure 2 , figure 2 It is a schematic diagram of the first embodiment of the artificial mouth according to the present invention. In this embodiment, the artificial mouth 20 includes a speaker 21, a front cover 22, and a sound guide tube 23, wherein the front cover 22 is fixed to the speaker 21 , and the sound guide tube 23 is arranged in the front cover 22 . The front cover 22 has two openings 221, 222, and the two openings 221, 222 are arranged on the same plane. The material of the sound guide tube 23 can be brass, marble, stainless steel, etc.

[0054] During the test, the two microphones 28 , 29 are respectively installed in the two openings 221 , 222 of the front cover 22 , and receive the sound generated by the speaker 21 through the sound guide tube 23 . Since the two openings 221, 222 are arranged on the same plane, so the microphones 28, 29 will also be arranged on the same plane, and after the sound guide tube 23 is designed (its design method will b...

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PUM

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Abstract

The present invention discloses an artificial mouth and a method for testing microphones. The artificial mouth includes a front cover, a loudspeaker, and an acoustic tube. The front cover has a plurality of holes which is coplanar. The loudspeaker generates sound waves which pass through the acoustic tube, and turn into plane waves when arriving at the plurality of holes of the front cover. The process for testing microphone comprises: providing an artificial mouth; locating the microphone and a standard microphone in the plurality of holes; and tuning the loudspeaker to a work frequency less than a cut-off frequency of the acoustic tube.

Description

technical field [0001] The present invention relates to an artificial mouth (Artificial Mouth) capable of testing at least one microphone, in particular to an artificial mouth capable of performing Phase Matching Test (Phase Matching Test), Sensitivity Test (Sensitivity Test) and microphone classification test on multiple microphones. (Microphone CategorizationTest), and artificial mouths for other tests. Background technique [0002] Artificial mouth (Artificial Mouth) can be used to test the sensitivity of the microphone. [0003] see figure 1 , figure 1 It is a schematic diagram of an existing artificial mouth. The existing artificial mouth 10 includes a speaker 11, a front cover 12, and a sound guide tube 13, wherein the front cover 12 is fixedly connected to the speaker 11, and the sound guide tube 13 is arranged on the front cover within 12. The front cover 12 has an opening 121 . During testing, the microphone is installed in the opening 121 of the front cover 12 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R29/00
CPCH04R29/00
Inventor 张波
Owner FORTEMEDIA
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