MPEG-4 AAC-ELD v2 – The New State of the Art in High Quality Communication Audio Coding
| Autor: | Markus Schnell, Johannes Hilpert, Manfred Lutzky, Maria Valero |
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| Rok vydání: | 2011 |
| Předmět: |
Multimedia
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Data_CODINGANDINFORMATIONTHEORY computer.file_format computer.software_genre Videoconferencing Computer architecture Algorithmic efficiency MPEG Surround MPEG-4 Extended Adaptive Multi-Rate – Wideband Codec Sound quality computer Coding (social sciences) |
| Zdroj: | Microelectronic Systems ISBN: 9783642230707 |
| DOI: | 10.1007/978-3-642-23071-4_32 |
| Popis: | Recently MPEG finished the standardization of a Low Delay MPEG Surround tool that is tailored for enhancing the widely adopted AAC-ELD low delay codec for high-quality audio communication into AAC-ELD v2. In combination with the Low Delay MPEG Surround tool, the coding efficiency for stereo content outperforms competing low delay audio codecs. This paper describes the technical challenges and solutions for designing a low delay codec that delivers a performance which is comparable to that of existing state of the art compression schemes. It provides a comparison to competing proprietary and ITU-T codecs, as well as a guideline for how to select the best possible points of operation. Applications facilitated by AAC-ELD v2 in the area of broadcasting and mobile video conferencing are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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