A comparison of warped and conventional linear predictive coding

被引：43
作者：
Härmä, A
Laine, UK
机构：
[1] Agere Syst, Media Signal Proc Res, Murray Hill, NJ 07974 USA
[2] Aalto Univ, Lab Acoust & Audio Signal Proc, FIN-02015 Espoo, Finland
来源：
IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING | 2001年 / 9卷 / 05期
基金：
芬兰科学院;
关键词：
audio coding; frequency-warping; listening test; speech coding; warped linear prediction;
D O I：
10.1109/89.928922
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Frequency-warped signal processing techniques are attractive to many wideband speech and audio applications since they have a clear connection to the frequency resolution of human hearing. A warped version of linear predictive coding (LPC) is studied in this paper, The performance of conventional and warped LPC algorithms are compared in a simulated coding system using listening tests and conventional technical measures. The results indicate that the use of warped techniques is beneficial especially in wideband coding and may result in savings of one bit per sample compared to the conventional algorithm while retaining the same subjective quality.
引用
收藏
页码：579 / 588
页数：10
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