The Improvement of Wavelet Packet for Psychoacoustic Model

摘要：

　　Compared with common psychoacoustic model,this article uses wavelet packet decomposition to decompose a signal.This method improves the situation of insufficient time-frequency resolution which the uniform spectrum analysis causes.In addition,frequency division by wavelet packet decomposition is much closer to humans critical band than the way common psychoacoustic model getting,it is more suitable to humans hearing characteristics.So we can use wavelet packet decomposition replace FFT in MPEG,and get accurate psychoacoustic model.

关键词： Psychoacoustic model Time-frequency analysis Wavelet packet decomposition

作者: Jing Lei Zhou Ying Li

作者单位: Department of Electronic Information and Engineering,Xian Polytechnic University,Xian 710048

会议类型: 国际会议

会议名称: the 2012 International Conference on Manufacturing Engineering and Automation (2012年制造工程与自动化国际会议(ICMEA2012))

会议地点: 广州

会议语种:英文

页码: 2491-2494

在线出版日期: 2012-11-16（万方平台首次上网日期，不代表论文的发表时间）