摘要
针对现有ISD语音芯片拷贝系统普遍存在不能自动精确定位每段语音首地址,提出了一种基于LabVIEW的ISD语音芯片录放系统。该系统以带有片上USB外设的C8051F340处理器为下位机,以PC机与LabVIEW GUI软件作为上位机并通过USB总线连接并控制下位机完成语音录放操作,另外借助一种特殊的采样调理电路与阈值判决方法实现对任意语音段首地址的自动精确定位。与传统拷贝系统相比,本系统在良好LabVIEW人机界面支撑下,功能更加全面实用。
The existing copy systems of ISD voice chip have several universal problems, such as they can＇ t automatically and precisely find the first address of each voice, they can＇ t edit and record the master ISD chip, etc. So a new record and playback system based on LabVIEW is presented. In the system, the C8051 F340 processor with on-chip USB peripherals is used as lower computer, and PC and LabVIEW GUI software are designed to be upper computer. The upper computer uses USB to connect and control the lower computer to finish record and playback voice for ISD chips. In addition, automatic and accurate positioning for the first address of any voice segment can be realized by a special conditioning circuit and threshold method. Compared with the traditional copy system, the new system has more comprehensive and practical functions in virtue of a good LabVIEW man-machine interface.
出处
《电声技术》
2013年第8期35-38,共4页
Audio Engineering
