本文件为HHT变换，适用于嵌入式信号处理信通，开发工具为KEIL MDK4.2，使用的核心芯片为ST32F403ZE,可移植-This source file is a HHT transform for embed DSP system,the develop platform is KEIL MDK4.2,the core chip i use is STM32F403ZE,and it could be transplant to other MCU easily