Channel Expansion Technology in MPEG Audio

Audio Compression in MPEG Technology

MPEG stands for MOVING PICTURE EXPERTS GROUP is a standard for video and audio compression for eliminating the noisy signals from the transmitted signals from the satellite. Audio compression is a basic method defined under MPEG-1 and MPEG-4 which by coding techniques compress audio signals to filter out undesired signals .This paper focuses on the MPEG technology, need and coding technique for...

MPEG-4 natural audio coding

MPEG-4 audio represents a new kind of audio coding standard. Unlike its predecessors, MPEG-1 and MPEG-2 high-quality audio coding, and unlike the speech coding standards which have been completed by the ITU-T, it describes not a single or small set of highly e$cient compression schemes but a complete toolbox to do everything from low bit-rate speech coding to high-quality audio coding or music ...

Overview of MPEG-7 audio

—MPEG-7 is a new ISO standard that facilitates searching for media content much as current text-based search engines ease retrieval of HTML content. This paper gives an overview of the MPEG-7 audio standard, in terms of the applications it might support, its structure, the process by which it was developed, and its specific descriptors and description schemes.

MPEG-4 Audio Lossless Coding

Lossless coding will become the latest extension of the MPEG-4 audio standard. The lossless audio codec of the Technical University of Berlin was chosen as reference model for MPEG-4 Audio Lossless Coding (ALS). The MPEG-4 ALS encoder is based on linear prediction, which enables high compression even with moderate complexity, while the corresponding decoder is straightforward. The paper describ...

MPEG Digital Audio Coding Standards