AN ADAPTIVE WINDOW SWITCHING METHOD FOR ITU-T G.719 TRANSIENT CODING IN TDA DOMAIN

摘要：

The paper proposes an adaptive window switching method based on Time Domain Aliasing (TDA) signal to improve the performance of ITU-T G.719 transient audio coding. As to the transient frame, the TDA output signal is analyzed with variable window length to obtain optimal time-frequency resolution. An optimal window switching mode is selected by means of open-loop transient position marking and closed-loop mode selection. Experiment results show that the proposed method can reduce the pre-echo artifacts of G.719 transient coding while maintain better time-frequency analysis effect than the fixed window switching method.

关键词： window switching time domain aliasing (TDA) transient coding

作者: Jing Wang Bo Chen Hailong He Shenghui Zhao Jingming Kuang

作者单位: Department of Electronic Engineering, Beijing Institute of Technology, Beijing, China

会议类型: 国际会议

会议名称: 2010 The IET 3rd International Conference on Wireless,Mobile & Multimedia Networks(第三届IET无线移动及多媒体网络国际会议 ICWMMN 2010)

会议地点: 北京

会议语种:英文

页码: 298-301

在线出版日期: 2010-09-26（万方平台首次上网日期，不代表论文的发表时间）