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Quality enhancement of coded transient audio with a post-filter in frequency domain

  • Jing Wang*
  • , Hailong He
  • , Jingming Kuang
  • *此作品的通讯作者
  • Dept. of Electronic Engineering
  • Beijing Institute of Technology

科研成果: 书/报告/会议事项章节 › 会议稿件 › 同行评审

摘要

This paper proposed a post-filter in frequency domain for enhancing the perceptual quality of the coded transient audio. The post-filter is used to filter the frequency coefficients of the coded transient and consists of a short-term post-filter which is derived from the Linear Predictive Coding (LPC) predictor based on the Discrete Cosine Transform (DCT) coefficients of the transient frame. In order to compensate the overall spectral tilt, a spectral tilt compensation filter is used following the shortterm post-filter. As a result, the post-filter in frequency domain shapes the temporal noise in time domain while introducing a little distortion in audio. This kind of post-filter doesn't need side information from the encoder and can be used in any audio decoder.

源语言英语
主期刊名ICSP2010 - 2010 IEEE 10th International Conference on Signal Processing, Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
页506-509
页数4
ISBN(印刷版)9781424458981
DOI
出版状态已出版 - 2010
活动10th International Conference on Signal Processing, ICSP 2010 - Beijing, 中国
期限: 24 10月 2010 → 28 10月 2010

丛书

姓名International Conference on Signal Processing Proceedings, ICSP
ISSN(印刷版)2164-5221
ISSN(电子版)2164-523X

会议

会议10th International Conference on Signal Processing, ICSP 2010
国家/地区中国
市Beijing
时期24/10/10 → 28/10/10

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