scholarly journals A Backward Compatible MultiChannel Audio Compression Method

2012 ◽  
Author(s):  
Xuefei Gao ◽  
Guo Yang ◽  
Jing Wang ◽  
Xiang Xie ◽  
Jingming Kuang
Keyword(s):  
Audio Compression ◽  
Compression Method ◽  
Multichannel Audio

A Backward Compatible Multichannel Audio Compression Method

2013 ◽  
Vol 756-759 ◽  
pp. 977-981
Author(s):  
Xue Fei Gao ◽  
Guo Yang ◽  
Jing Wang ◽  
Xiang Xie ◽  
Jing Ming Kuang
Keyword(s):  
Audio Signal ◽  
Temporal Analysis ◽  
Audio Signals ◽  
Audio Compression ◽  
Compression Method ◽  
Audio Quality ◽  
Multichannel Audio ◽  
Parametric Data ◽  
Encoding Method ◽  
Spatial Temporal Analysis

This paper proposes a backward-compatible multichannel audio codec based on downmix and upmix operation. The codec represents a multichannel audio input signal with downmixed mono signal and spatial parametric data. The encoding method consists of three parts: spatial temporal analysis of audio signal, compressing multi-channel audio into mono audio and encoding mono signals. The proposed codec combines high audio quality and low parameter coding rate and the method is simpler and more effective than the conventional methods. With this method, its possible to transmit or store multi-channel audio signals as mono audio signals.

A low complexity wavelet based audio compression method

1996 ◽  
Author(s):  
K. Dobson ◽  
J. Yang ◽  
N. Whitney ◽  
K. Smart ◽  
P. Rigstad
Keyword(s):  
Low Complexity ◽  
Audio Compression ◽  
Compression Method

ISO/MPEG Audio Coding

1997 ◽  
Vol 08 (01) ◽  
pp. 69-118 ◽  
Author(s):  
Peter Noll ◽  
Davis Pan
Keyword(s):  
Phase 1 ◽  
Audio Coding ◽  
Digital Audio ◽  
Audio Compression ◽  
Typical Application ◽  
Production Program ◽  
Multichannel Audio ◽  
Digital Storage ◽  
The Status ◽  
Standardization Process

The Moving Pictures Expert Group within the International Organization of Standardization (ISO/MPEG) has developed, and is presently developing, a series of audiovisual standards. Its audio coding standard MPEG Phase 1 is the first international standard in the field of high quality digital audio compression and has been applied in many areas, both for consumer and professional audio. Typical application areas for digital audio are in the fields of audio production, program distribution and exchange, digital sound broadcasting, digital storage, and various multimedia applications. This paper will describe in some detail the main features of MPEG Phase 1 coders. As a logical further step in digital audio a multichannel audio standard MPEG Phase 2 is being standardized to provide an improved stereophonic image for audio-only applications including teleconferencing and for improved television systems. The status of this standardization process will be covered briefly.

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