Sound inspecting and compensating method based on machine vision technology

A technology of machine vision and compensation method, applied in the direction of electrical components, etc., can solve the problems of expensive detection equipment, incomplete detection, easy introduction of other interference, etc., and achieve the effect of less interference sources, low cost, and simple equipment

Inactive Publication Date: 2014-01-29
SUZHOU GALAXY ELECTRONICS TECH
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Problems solved by technology

[0011] The present invention is mainly to solve the problems existing in the prior art such as incomplete detection, expensive detection equipment, etc., which are easy to introduce other interferences, and provides a simple and effective equipment, comprehensive detection, less interference, and can solve the problem of distortion. Sound detection and compensation device and method of machine vision technology

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  • Sound inspecting and compensating method based on machine vision technology

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Embodiment Construction

[0023] A kind of audio system detection device of this embodiment, such as figure 1 As shown, it includes a sequentially connected camera 5 , screen element removal module 6 , screen division and arrangement module 7 , screen superposition module 8 , position extraction module 9 , spectrum analysis and comparison module 10 and frequency compensation module 3 . The spectrum analysis and comparison module 10 is connected to the sound source 1 , and the frequency compensation module 3 is connected in series between the power amplifier 2 and the speaker 4 .

[0024] The processing flow of the whole device is as follows: use a fluorescent pen to make a mark on the paper cone of the speaker 4, fix the speaker 4, align the lens of the camera 5 with the paper cone and fix it, the vibration direction of the fluorescent point on the paper cone is the same as that of the camera 5 The direction of the lens is vertical, a standard sound source disc is used to play, and the camera 5 is shoo...

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Abstract

The invention discloses a sound inspecting and compensating device and method based on a machine vision technology and aims at providing a sound inspecting and compensating method which is not easy for bringing other distortion. The whole method comprises the following flow steps of: marking at an inspected part on a loudspeakercone by using a nite writer pen; fixing a loudspeaker; aligning a lens of a camera to the loudspeakercone, wherein the vibration direction of a phosphor dot on the loudspeakercone is vertical to the lens direction of the camera; playing a disk with a standard sound source; meanwhile, shooting by using the camera, processing the shot picture and analyzing the frequency spectrum of the phosphor dot; comparing the frequency of the disk with the standard sound source with the frequency spectrum to obtain the deviation of a sound system; and compensating the short or superfluous frequency in front of the loudspeaker. A waveform graph of the phosphor dot actually reflects the frequency spectrum of sound made by the loudspeaker, and the final sound can infinitely approximate the output of a sound source through frequency compensation. The sound inspecting and compensating device and method are suitable for inspection and correction of all sound systems.

Description

technical field [0001] The invention discloses a detection device and a method, and in particular relates to a detection and compensation device and a method of a sound system based on machine vision technology. Background technique [0002] Machine vision mainly uses computers to simulate human visual functions, extracts information from images of objective things, processes and understands them, and finally uses them in actual detection, measurement and control. The biggest feature of machine vision technology is fast speed, large amount of information, and multiple functions. [0003] The fidelity test of the sound system is the most important part of the sound system test. The current detection methods mainly include stage detection and overall detection. Stage-by-stage detection refers to the detection of each component of the audio system, such as sound source detection, power amplifier detection, speaker detection, etc., so as to achieve the purpose of overall detec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
Inventor 鞠怡明易凯陈霞
Owner SUZHOU GALAXY ELECTRONICS TECH
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