嵌入式语音信号处理实验系统的设计与实现.

To embody the idea of mutual promotion between teaching and scientific research, and to meet the needs of teaching and research for speech signal processing, an integrated experimental platform for embedded speech signal processing is design by using Cortex-A8 microprocessor and WM8960 audio coding and decoding chip as core hardware. Moreover, an integrated experimental teaching and development software is designed on this platform by using QT development software. Then, the system hardware structure and transplant of driver are described. By taking an example of the speech enhancement algorithm based on spectral subtraction, the speech development process based on QT is introduced. Based on this experimental platform, students can master not only the basic knowledge of speech signal processing, but also the development process of embedded software for the speech application. The system had friendly interface and strong functions, can be used for the teaching of speech and signal processing in colleges and universities, and for the research and development of related topics on speech signal processing. [ABSTRACT FROM AUTHOR]