瓷砖检测机器人的声音信号处理.doc

瓷砖检测机器人的声音信号处理
摘 要:本系统包括:声音预处理部分、AD转换芯片、单片机芯片以及显示和按键部分。系统先采集敲击不同空鼓状态瓷砖时发出的声音并得到特征参数,同时输入该声音所对应的空鼓范围,利用麦克风采集声音,将采瓷砖检测机器人的声音信号处理
摘 要:本系统包括:声音预处理部分、AD转换芯片、单片机芯片以及显示和按键部分。系统先采集敲击不同空鼓状态瓷砖时发出的声音并得到特征参数,同时输入该声音所对应的空鼓范围,利用麦克风采集声音,将采集的数据经放大、滤波后,AD转换芯片对其进行数模转换,这就完成了预处理。而后将预处理后的声音数据存储在单片机中,单片机接收到AD芯片转换的数据后,与子程序所提取的声音信号特征参数进行比较,与之前建立的模板进行匹配并完成识别,最后将识别结果的数据传输给显示模块进行结果显示。
关键词:声音信号;特征提取;单片机系统;特征频率
中图分类号:TN912 文献标志码:A 文章编号:2095-2945(2020)04-0029-02
Abstract: The system includes: sound preprocessing part, AD conversion chip, single-chip microcomputer chip and display and key part. The system first collects the sound produced when striking the ceramic tiles of different empty drum states and obtains the characteristic parameters, at the same time, inputs the corresponding range of the empty drum, collects the sound with the microphone, amplifies and filters the collected data, and carries on the digital-to-analog conversion to it by the AD conversion chip, which completes the preprocessing. Then the preprocessed sound data is stored in the single-chip microcomputer. After receiving the data converted by the AD chip, the single-chip microcomputer compares the characteristic parameters of the sound signal extracted by the subroutine, matches with the previously established template and completes the recognition. Finally, the data of the recognition result