Multi-horn device horn polarity detection method, corresponding device and conference system

Abstract

The invention discloses a multi-horn device horn polarity detection method, a multi-horn device and a conference system, the multi-horn device comprises at least two horns and microphones, and the multi-horn device is characterized in that a horn polarity detection control module and a standard test audio file are stored in the multi-horn device; the method comprises the following steps: step 1, acquiring standard phase characteristics of a horn of standard reference device; and step 2, performing polarity detection of the horn of the detected device. After the technical scheme of the invention is adopted, not only can the polarity condition of double loudspeakers in the audio device be judged, but also the polarity condition of containing multiple loudspeakers can be judged at the same time, and reverse connection of the loudspeakers after delivery is avoided. The related test system is simple in structure, low in production test cost, simple and convenient to operate, suitable for self-test and also suitable for a production line.

Description

technical field [0001] The invention relates to a speaker polarity detection method for a multi-speaker device, a corresponding device and a conference system, especially a device or a conference system with two or more speakers. Background technique [0002] Now, the conference system has developed into an integrated and lightweight high-definition video conference terminal, which generally contains a microphone array, speakers and cameras. The acoustic performance is very critical for the conference system. When testing the audio acoustic performance of the conference system product, the acoustic performance of its acoustic devices, such as microphones, speakers, receivers, etc., is one of the important criteria to measure whether the production quality of mobile terminals is qualified. The speakers are polarized. When there is only one speaker in the device, no matter whether the polarity is positive or reversed, the sound quality and tone of the speaker are normal to the...

AI Technical Summary

Problems solved by technology

This detection method is not suitable for use on the production line of mass production products

In addition, some detection methods can only detect the reverse connection of the left and right speakers, but cannot detect the reverse connection of the left and right speakers or the positive connection of the left and right speakers; there are also detection methods that need to control the speakers to play two audio sources , and compare and judge the two sections of sound waves received by the microphone, it takes a long time

Therefore, the current method for detecting the polarity of speakers in the production line has problems such as complex environment construction, long time required, high detection cost, and inability to detect reversed connections at the same time. In order to avoid these problems, the present invention proposes a speaker for multi-speaker equipment. Polarity self-inspection method, the environment is simple to set up, the detection cost is low, and it is convenient for the product line to quickly and effectively detect the polarity of the speaker

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