摘要
设计了一种基于16位定点DSPTMS320VC5410的语音信号采集系统,该系统应用了集ADC和DAC于一体的SIGMADELTA型单片模拟接口芯片TLC320AD50C,采用FIFO技术进行缓存,CPLD实现控制逻辑,EZUSB外围接口器件实现串行通信。主要介绍了系统的硬件结构和软件编程思想及实现方法。经测试,对语音信号回放人耳感觉不到失真。
A speech signal acquisition system based on the 16-bit, fixed-point, digital signal processor (DSP) TMS320VC5410 is designed. The system adopts single high-resolution analog interface chip TLC320AD50C that integrates sigma-delta digital-to-analog converter with analog-to-digital converter. Buffer and control logic are realized by first-input-first-output (FIFO) memory and complex programming logic device (CPLD) separately. A highly integrated universal serial bus (USB) peripheral interface device EZ-USB is used in serial communication. The basic design principles for hardware and the program frame and realization methods for software are analyzed. The result of test shows distortion almost cannot be sensed when utilizing the system to speech signal playing back.
出处
《太原科技大学学报》
2005年第2期107-110,114,共5页
Journal of Taiyuan University of Science and Technology
基金
太原科技大学青年科技研究基金资助项目(200307)
