NDLI: Multi-channel Audio Compression Method Based on ITU-T G.719 Codec

Content Provider	IEEE Xplore Digital Library
Author	Wenjin Jiang Jing Wang Yi Zhao Baoguang Liu Xuan Ji
Copyright Year	2013
Description	Author affiliation: Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China (Wenjin Jiang; Jing Wang; Yi Zhao; Baoguang Liu; Xuan Ji)
Abstract	Through exploiting the human perception of spatial sound, a new approach for compression coding of multi-channel audio signal based on ITU-T G.719 codec is put forward in this paper. Multi-channel input signals are converted to a down-mixed signal plus spatial perceptual parameters by use of down-mix and up-mix step-by-step techniques in frequency domain. The algorithm can significantly reduce the coding rate under the premise of an acceptable sound quality in combination with the G.719 audio codec. The paper presents the implementation of the algorithm and describes in detail the calculation and features of the selected spatial parameters. Finally some experiments are done to evaluate the algorithm from the perspective of the compression ratio, the reconstructed sound quality, and the algorithm complexity.
Starting Page	293
Ending Page	297
File Size	244112
Page Count	5
File Format	PDF
ISBN	9780769551203
DOI	10.1109/IIH-MSP.2013.81
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Codecs Quantization (signal) Audio coding G.719 Spatial perceptual parameters Multi-channel audio compression Complexity theory Decoding Audio compression
Content Type	Text
Resource Type	Article

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