NDLI: Subframe Interpolation Optimized Coding of LSF Parameters

Content Provider	IEEE Xplore Digital Library
Author	Linliang Chen Yanping Yu Kuang Wang
Copyright Year	2007
Description	Author affiliation: Zhejiang Univ., Hangzhou (Linliang Chen; Yanping Yu; Kuang Wang)
Abstract	In many speech coding systems, frames are further divided into subframes. The line spectral frequency (LSF) parameters of each subframe are used to construct the linear predictive coding (IPC) synthesis filter but only the LSF parameters of the last subframe in each frame are quantized and transmitted while those of others are obtained by interpolating in decoder. Conventional coding schemes are designed to try to minimize the spectral distortion of the quantized LSF vectors without considering those of interpolated ones. However, a considerable performance could be gained by exploiting this subframe interpolation operation. This paper presents a novel and efficient LSF coding approach. The proposed subframe- weighted LSF distance measure allows a coder to improve the LSF coding performance over all subframes of all frames. Simulation results show that both average spectral distortion (SD) and outliers of the proposed algorithm are improved. Therefore it is more excellent than conventional ones.
Starting Page	725
Ending Page	728
File Size	392652
Page Count	4
File Format	PDF
ISBN	9780769529097
DOI	10.1109/SNPD.2007.379
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-30
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Weight measurement Frequency synthesizers Nonlinear filters Linear predictive coding Vectors Decoding Speech synthesis subframeweighted LSF distance measure Interpolation Speech coding subframe interpolation Distortion measurement LSF
Content Type	Text
Resource Type	Article

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