A Modified Spatial Parameter Codec Algorithm in MDCT Domain

Author

Cao Sheng ; Peng Yuxing ; Liu Yutian

Author_Institution

Comput. Sch., Wuhan Univ., Wuhan, China

fYear

2011

fDate

16-18 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

With stereo audio steping into people´s daily lives, spatial parametric technology comes to its broad prospects for development. Spatial parameteric technology is a method for stereo compression. MDCT is excluded in the current scheme for spatial cues representation,due to its lacking of phase information and energy conservation. In this paper, Construction of new spatial parameter codec framework in MDCT domain, and Optimization of calculating for the new module, to reduce computational complexity of the system. A Modified Spatial Parameter Codec Algorithm in MDCT Domain was proposed to improve it. The MDCT-MDST conversion, in matrix form, is approximating to a banded sparse matrix. To compare with the EaacPlus system, the output stereo of the new system gains a considerable subjective and objective test scores. This research make a contribution to the spatial parametric technology in MDCT domain, and provide a new train of thought to reduce complexity of EaacPlus system.

Keywords

Hi-Fi equipment; audio coding; codecs; discrete cosine transforms; MDCT domain; banded sparse matrix; computational complexity; modified discrete cosine transform; modified spatial parameter codec algorithm; spatial parameter codec framework; stereo audio; stereo compression; Codecs; Discrete Fourier transforms; Encoding; Integrated circuits; Sparse matrices; Speech; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Internet Technology and Applications (iTAP), 2011 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7253-6

Type

conf

DOI

10.1109/ITAP.2011.6006332

Filename

6006332