Design And Implementation Of Wireless Voice Communication System Based On Android Platform

In daily life,voice is one of the most basic and convenient way to communicate.Wireless voice communication technology is developing rapidly.Products and technologies with different functions such as mobile phone call,Interphone,and network voice software meet the needs of communication.However,mobile phone call technology and network call technology rely on mobile communication base stations and Internet.The two communication methods cannot be used in environment without base station such as remote mountainous areas.Interphone can realize voice communication without base station,but the cost is relatively high.For application requirements such as conference venues transmission with poor reverberation and point-to-multipoint tour guide commentary,a low-cost and high-quality broadcast solution is required.Based on the above background,this paper designs and implements a wireless voice communication system based on the Android platform,which includes a transmitter part and a receiver part.The transmitter samples,encodes,and transmits voice signal;the receiver sequentially receives,decodes and plays voice signal.The sending end and the receiving end of the system are composed of an Android phone and a single-board slave.The whole system realizes the voice communication based on the Android phone under the condition of no base station or access to Internet.At the same time,it can also be used in venues,tourism interpretation and other scenes.When the distance is long,the mobile phone can be connected to the slave device to achieve clear and real-time voice listening.The system consists of a hardware part and a software part.The hardware part includes a wireless communication module,a Bluetooth module,and a main control chip module.The wireless communication module completes the sending and receiving of voice data,the Bluetooth module completes the communication between MCU and the Android system,and the main control chip module controls the wireless communication module and the Bluetooth module.At the software level,this paper has completed the programming of the single-board slave and developed an application based on the Android system platform.After actual on-site debugging,the system has realized the voice communication function between the sending end and the receiving end.The communication voice is clear and the system works stably.