摘要
设计并实现了一套基于高频声卡的音频定向传播实验系统,该系统包括了信号产生与测试分析两部分。系统由计算机内置声卡、功放、换能器以及传声器、调理器、A/D等部件组成。利用该系统可方便地修改模型及其他实验相关参数,并且实时地产生希望特性的调制超声波。很好地满足了音频定向实验的实际需求,同时系统结构简单,成本低廉,具有明显的实用性。
An audio signal directional propagate experiment system is design and implement based on high frequency sound card,which includes signal generation and test analysis proportion.The experiment system compose of PC sound card,power amplifier,ultrasonic transducer,sound level meter,signal conditioner and A/D.Use the experiment system can change model and other correlation parameter easily,besides it can elicit real-time modulate ultrasonic which interested in.This system fulfils the audio signal directional propagate experiment requests,at the same time it briefness,cheapness and has obvious practicality.
出处
《火力与指挥控制》
CSCD
北大核心
2010年第5期149-151,共3页
Fire Control & Command Control
基金
西北工业大学研究生创业种子基金资助项目
