A nonuniform modulated complex lapped transform

被引：9

作者：

Xiong, ZX ^{[1
]}

Malvar, HS

机构：

[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA

[2] Microsoft Res, Redmond, WA 98052 USA

来源：

IEEE SIGNAL PROCESSING LETTERS | 2001年 / 8卷 / 09期

关键词：

audio processing; filter banks; lapped transforms; modulated filter banks;

D O I：

10.1109/97.948450

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A nonuniform modulated complex lapped transform (NMCLT) is introduced in this paper as a two-stage extension of the modulated complex lapped transform (MCLT). The NMCLT is a new nonuniform oversampled filter bank with a better combination of time- and frequency-domain localization than previous designs. Adaptive nonuniform subband decompositions can be easily generated by varying the number of coefficients brought to the second stage on a frame-by-frame basis. The NMCLT is ideally suited for processing wideband signals such as audio, with reduced time-spreading artifacts.

引用

页码：257 / 260

页数：4

共 9 条

[1] de Queiroz RL, 1998, INT CONF ACOUST SPEE, P1341, DOI 10.1109/ICASSP.1998.681694
[2] A modulated complex lapped transform and its applications to audio processing
Malvar, H
[J]. ICASSP '99: 1999 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS VOLS I-VI, 1999, : 1421 - 1424
[3] Malvar H., 1992, SIGNAL PROCESSING LA
[4] Biorthogonal and nonuniform lapped transforms for transform coding with reduced blocking and ringing artifacts
Malvar, HS
[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1998, 46 (04) : 1043 - 1053
[5] MALVAR HS, 1998, P INT S CIRC SYST 98, P98
[6] Purat M, 1996, INT CONF ACOUST SPEE, P1021, DOI 10.1109/ICASSP.1996.543297
[7] The modulated lapped transform, its time-varying forms, and its applications to audio coding standards
Shlien, S
[J]. IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, 1997, 5 (04): : 359 - 366
[8] LOW BIT-RATE TRANSPARENT AUDIO COMPRESSION USING ADAPTED WAVELETS
SINHA, DP
TEWFIK, AH
[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1993, 41 (12) : 3463 - 3479
[9] Vaidyanathan P. P., 1993, MULTIRATE SYSTEMS FI

← 1 →