Method of screening channel of Bluetooth headset used for examination

Abstract

The invention relates to the field of Bluetooth, and particularly to a method of screening a channel of a Bluetooth headset used for examination. The method comprises a Bluetooth headset, a high-speedRF channel, a classic RF channel and a low-power-consumption RF channel; and the high-speed RF channel, the classic RF channel and the low-power-consumption RF channel are configured in the Bluetoothheadset. The method comprises the steps of S1, performing harmonic distortion detection on the high-speed RF channel, the classic RF channel and the low-power-consumption RF channel in sequence and judging the size of harmonic distortion of each RF channel; S2, opening a channel with the lowest harmonic distortion for broadcasting; S3, if the channel broadcasting is successful, broadcasting by using the channel and closing other channels, and if the channel broadcasting is failed, closing the channel and then repeating the steps S1 and S2, and testing after channels except for the to-be-measured channel are closed; and S4, if the channel broadcasting is still failed, enabling the high-speed RF channel, the classic RF channel and the low-power-consumption RF channel for broadcasting. According to the method of screening the channel of the Bluetooth headset used for examination, broadcasting is carried out through a single channel, and the power consumption of the Bluetooth headset is reduced.

Description

technical field [0001] The invention relates to the field of bluetooth earphones, in particular to a method for channel screening of bluetooth earphones for examinations. Background technique [0002] Foreign language, in today's information-advanced world, is one of the compulsory courses for students in school. Through learning, students can communicate with foreigners conveniently, and some foreign language grade examinations have also become the basic courses that people need to study abroad. . [0003] Traditionally, foreign language listening tests are conducted through broadcast speakers. With the development of technology, in order to reduce the impact of environmental noise on candidates, broadcast tests are gradually conducted through Bluetooth headsets. However, due to the long listening time of some courses , or the same batch of headphones needs to be given to different candidates for listening tests at different times. Therefore, the built-in power capacity of...

AI Technical Summary

Problems solved by technology

[0003] Traditionally, foreign language listening tests are conducted through broadcast speakers. With the development of technology, in order to reduce the impact of environmental noise on candidates, broadcast tests are gradually conducted through Bluetooth headsets. However, due to the long listening time of some courses , or the same batch of headphones needs to be given to different candidates for listening tests at different times. Therefore, the built-in power capacity of the Bluetooth headset is required to be high, which increases the manufacturing cost of the Bluetooth headset. In addition, when the Bluetooth headset is generated, due to each In the earphones produced, the harmonics of the channel will cause distortion due to the small error of the components. Different earphones are slightly different. Affects sound quality to a certain extent and wastes power

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