FRAME ERROR-ROBUST MDCT BIT REDUCTION SCHEME USING INTER-FRAME CORRELATION FOR G.729.1

被引：0
|
作者：
Cho, Keunseok [1 ]
Jung, Sangbae [2 ]
Kim, Hyunwoo [3 ]
Hahn, Minsoo [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
[2] Gyeongsang Natl Univ, Dept Elect Engn, Jinju, South Korea
[3] ETRI, Taejon, South Korea
来源：
2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2011年
关键词：
spectral envelope; TDAC; inter frame; MDCT coefficient; G.729.1;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper, a new algorithm for encoding spectral envelope in G.729.1 for VoIP is proposed. In the TDAC part of G.729.1, the spectral envelope and MDCT coefficients extracted in the weighted CELP coding error (lower-band) and the higher-band input signal are encoded. In order to reduce allocation bits for spectral envelope coding, a new algorithm using sub-band correlation between adjacent frames is proposed. In addition, a new bit allocation strategy using reduced bits from the proposed algorithm is also proposed. The performance of the proposed algorithm is evaluated by sound quality and bit reduction rates in clean and frame loss conditions.
引用
收藏
页码：1785 / 1788
页数：4
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