摘要
傅立叶变换在信号处理中具有十分重要的作用,在语音信号处理中,傅立叶变换在传统上也一直起主要作用。然而,语音信号是一个非平稳过程,因此适用于周期信号、瞬变信号或平稳随机信号的标准傅立叶变换不能用来直接表示语音信号。本文利用傅立叶短时分析实现了对语音信号中敏感信息的提取,具有一定的实用性和创新性。
FT is very important in the signal processing, and it also play an important role in the traditional voice signal processing. But voice signal is an instable process, so standard FT that fit to the period signal and stable signal can not be express the voice signal directly. This paper use short time analysis realized the sensitive information＇s abstract in the voice signal, and it has some practicability.
出处
《微计算机信息》
北大核心
2007年第02X期246-247,261,共3页
Control & Automation
基金
安徽省优秀青年科技基金(04042069)
