在DSP5509A开发环境下，进行运用阻塞矩阵方法进行语音信号增强处理。-In the DSP5509A development environment, the speech signal enhancement processing is carried out by using the block matrix method.

DSP/BIOS的基础教程，适用于初学者。包括硬件中断、软件中断、线程转换和阻塞等基础知识，还有邮箱和旗语等基本内容 -The basis of DSP/BIOS tutorial, suitable for beginners.Including hardware interrupt, or software interrupts, and a thread conversion and obstruction and other basic knowledge, basic content

DSP/BISO线程调度，通过允许高优先级的线程抢占低优先级的线程，以及允许阻塞、同步、通信等各种线程间的交互方式，使得多线程的应用程序可以在一个处理器上运行。(DSP/BISO thread scheduling)