QQ客服 官方微博 反馈留言

	AN ACCURATE DECORRELATION METHOD FOR PARAMETRIC STEREO CODING
	Qu, Tianshu ; Huang, Qingbo ; Huang, Yichao ; Li, Liang ; Wu, Xihong
	2016
关键词	Parameter stereo coding Decorrelator MDCT MDST MUSHRA AUDIO STANDARD
英文摘要	Decorrelator is a module to restore the specific correlation properties between stereo signals in parametric stereo audio decoder, which is vital to keep the spatial information of the stereo signals. Generally, the existing decorrelators are prone to have a comb-filter effect which results in an undesirable "metallic" sound and produce temporal smearing such as pre- and post-echoes artefacts. This paper presents an accurate decorrelation method based on solving the two decorrelation-related functions in complex-frequency domain. Using this method, a novel parametric stereo coding system is proposed. In this system, a modified discrete cosine transform and a modified discrete sine transform are used to transform stereo signals from time domain to complex-frequency domain for calculating the stereo parametric, and the Advanced Audio Coding module of MPEG-4 is chosen to perform the mono-channel coding and decoding process. The results of the subjective evaluation experiments show that the proposed system perform better than the HE-AAC system; National High Technology Research and Development Program of China (863 Program) [2015AA016306]; National Natural Science Foundation of China [61175043, 61421062, 31170985]; CPCI-S(ISTP); 72-76
语种	英语
出处	5th International Conference on Audio, Language and Image Processing (ICALIP)
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470275]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Qu, Tianshu,Huang, Qingbo,Huang, Yichao,et al. AN ACCURATE DECORRELATION METHOD FOR PARAMETRIC STEREO CODING. 2016-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。