A comparison of warped and conventional linear predictive coding

作     者：Härmä, A Laine, UK 

作者机构：Agere Syst Media Signal Proc Res Murray Hill NJ 07974 USA Aalto Univ Lab Acoust & Audio Signal Proc FIN-02015 Espoo Finland 

出 版 物：《IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING》 (IEEE Trans Speech Audio Process)

年 卷 期：2001年第9卷第5期

页      面：579-588页

核心收录：

基　　金：Academy of Finland 

主　　题：audio coding frequency-warping listening test speech coding warped linear prediction 

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.