Engineering Simulator Sound Simulation And Voice Call System Design

With the development of military industry of China,the emergence of engineering simulators has become inevitable.In order to realistically simulate flight sounds on the ground,it is necessary to drive clusters of speakers to play complex and varied sound effects.Due to the characteristics of open simulation,extensive personnel,and needs for confidentiality,A portable,real-time,and confidential speech call system can greatly affect the quality of simulation tests.Therefore,this project studies a sound simulation and speech call system,which is used to simulate a certain type of engineering simulation test,so as to provide test and refereice for the sound effect and call part in the engineering simulation test.This article designed the sound simulation subsystem,which receives the real-time flight parameters of the flight control system.The audio buffer is obtained by sampling,changing,and mixing the audio material.The sound box drives the different speakers in the cockpit to play the different audio files which has a specified f’eature to the sound channels.In this,paper,a voice call subsystem is designed.It samples,compresses and encrypts speech signals,and route the signal path according to the semantics of the sender’s voice.This realizes the function of intelligent person-to-penson talk and multi-user chat.This paper theoretically clarified the principle of audio collection,compression,encryption and recognition algor:itluhms and the model of multi-client network communication system,and discussed the algoritlig principle,implementation process and the final effect of flight audio simulation and voice communlication system.The main work of this paper is as follows:The audio simulation section introduces the system composition framework and hardware resources.The paper discusses the flow from audio signal acquisition and management to audio change and mixing processing and the principle and process of audio playback of the underlying driver.The paper discusses the configuration of the hardware resources and audio resources of the top-level audio management program and the implementation process of the visual interface.In the part of voice communication,the system composition framework is introduced.The principles and flow of voice signal sampling and storage technology,audio stream compression and encryption algorithm,online voice recognition technology and audio playback technology are discussed.The principle and implementation process of voice switching network service based on C/S framework are discussed.This project completed the development and test of this set of detection system,completed the requirements of the project,and reached the technical indicators of the engineering simulator sound simulation and the voice call system.