针对传统方法在高信噪比情况下检测性能较好、但在低信噪比情况下性能很差的问题,提出一种新的基于时序结构的听觉感知语音信号端点特征检测方法.利用有限长窗时间序列结构对听觉感知语音信号进行采集,实现时序分析,得到听觉感知语音信息的一般形式,在此基础上,获取时序结构下听觉感知语音信号的短时能量特征.对含噪声的听觉感知语音信号进行离散小波变换处理,获取含噪声的小波系数,通过阈值对小波系数进行处理,将未超过阈值的小波系数看作噪声,通过高于阈值的小波系数对听觉感知语音信号进行重构,完成语音信号去噪处理.利用双门限-三态转换判断体系实现听觉感知语音信号端点特征检测.实验结果表明,本文方法在低信噪比状态下仍可保证高检测精度.

This article makes a study on the architectural decoration reconstruction in Xijing Road,Beidaihe from the perspective of leisure culture.It makes a profound discussion on the specific methods of architectural decoration reconstruction in a tourism city and the positive influence and practical significance on the city.It develops the methods to improve the cultural environment in the city and upgrade the whole image of city.Meanwhile,it makes the strategies and principles that extensively apply to the architectural decoration reconstruction of the city.