Multi-segment earphone adaptive switching system and method and equipment

Abstract

The invention belongs to the field of control systems, particularly relates to a multi-segment earphone adaptive switching system and method, and equipment, and aims to solve the problems that an existing earphone system cannot be compatible with four-segment / three-segment earphones, cannot support three-segment passive MIC type audio peripherals at the same time, does not support forward and reverse transmission and is low in integration level. The system comprises a forward transmission subsystem and a reverse transmission subsystem which have the same wiring mode, and the forward / reverse transmission subsystems are switched only by converting input and output interfaces. In the forward transmission subsystem, an analog audio signal is input to a four-segment audio base, a digital audio signal is input to an I2S audio base, and the analog audio signal and the digital audio signal are transmitted to an audio encoding / decoding module through an analog switch array for audio mixing or alternatively transmitted to the analog switch array and then transmitted to a three-segment audio base or a dual-track balance audio base for output. According to the invention, multi-channel output and forward and reverse switching of the earphone are realized, and the integration of the earphone system is improved.

Description

technical field [0001] The invention belongs to the field of control systems, and in particular relates to a multi-segment earphone self-adaptive switching system, method and equipment. Background technique [0002] At present, there are many types of audio peripherals, and earphones are also divided into 3-segment and 4-segment (US / GB). The audio system is particularly important for judging the type of earphones connected. Poor matching will lead to low sound or only tune but no sound, etc. Phenomenon; at the same time, the audio signal from input to final output usually requires pre-conditioning, link switching, forward and reverse transmission and other related processes. At present, although there are corresponding product designs for each link, there are very few portable and easy-to-integrate products that integrate the entire audio pre-stage process. The functions of the existing audio pre-processing units are relatively simple. Most of them only do simple multi-segm...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, that is, the existing audio pre-processing equipment has poor applicability, low integration level, and inability to adaptively switch between different earphones, the present invention provides a multi-segment earphone automatic Adaptive switching system, the system is constructed based on multi-segment earphone adaptive switching equipment, and the multi-segment earphone adaptive switching equipment includes 4-segment audio socket, digital I2S audio socket, earphone adaptive switching module, digital two-way switching module, analog switch array, audio encoding / decoding module, core control module, operational amplifier module, three-section audio seat, two-channel balanced audio seat and 2 passive MIC adaptation circuits; the system includes a forward transmission subsystem and a reverse To the transmission subsystem;

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