The Design And Implementation Of Voice Control Muitimedia System’s Adapter

With the rapid development of automobile industry and manufacture, when people enjoy driving pleasure, they also were accompanied by some traffic hidden troubles. At present the national areas pilot to punish the illegal behavior of driving for the phone.For the owner, the concepts of "wordsonly not hand" urgently need an effective solution. Therefore, it is completely necessaryto establish a set ofintelligent driving assistant system which can quickly achieve voice interaction. This thesis mainly completes the design and implementation of voice control multimedia system’s adapter in the scenario of communication, entertainment, system and application.Below is the main work of this thesis:1. This design and implementation of voice control multimedia system’s adapter. In this thesis, the voice assistant can’t have direct communication with car machine platform. Therefore, it is necessary to design and achieve an adapter which can provide callback interfaces and service interfaces. At first, this thesis puts forward the design and system structure of adapter tool, and then analyses the system structure of adapter, and the adapter tool can be divided into three parts: filter layer, adapter layer, and function layer.2. This part designs and implements the function of uploading data to voice assistant and the request function of voice assistant. Upload function includes orientation information, SIM status, common used data. The request function of voice assistant includes operating application, communication and command control function.3. The adapter tool assists car machine to complete the registration and data reporting function. Interfaces provided by the adapter toolcan get the machine ID, SIM card’sstatus and other information, then help car machine complete the registration process. Trip information reporting function needs the basis of secret key in the process of registration. The basic key was used to decryptreporting stage’s data returned by name service.4.This part designs and implements the function of audio focus. In this thesis, theinterfacesprovided by adapter tool provide service of obtaining audio focus, releasing audiofocus and sending audio coordinate inform to voice assistant audio. This part optimizes the traditional spectral subtraction according to the characteristics of the vehicle noise, so as to achieve the purpose of improving the quality of audio which was imported to voice assistant (AutoFly).Finally, the adapter tool was designed and implementation. At the same time, the basic functions of adapter were tested, and the purpose of availability, timeliness and stability were desired. This tool meets the requirements of enterprise development and is valuable to engineering application. The adapter tool which was designed and achieved serves as the bridge between voiceassistant and multimedia system, and it has important significance for reducing the coupling between both sides.