Abstract
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.
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References
Allamanche E, Geiger R, Herre J, Sporer T (1999) MPEG-4 Low Delay Audio Coding Based on the AAC Codec. In: 106th AES Convention. Munich, Germany. Preprint 4929
Feiten B, Kroll J, Raake A, Wältermann M, Wüstenhagen U (2010) Evaluation of super-wideband speech and audio codecs. In: Audio Engineering Society Convention 129
International Telecommunication Union (2001) Method for the subjective assessment of intermediate sound quality (MUSHRA). ITU-R, Recommendation BS 1534-1, Geneva, Switzerland
Laaksonen L, Tammi M, Malenovsky V, Vaillancourt T, Lee MS, Yamanashi T, Oshikiri M, Lamblin C, Kovesi B, Miao L, Zhang D, Gibbs J, Francois H (2010) Superwideband Extension of G.718 and G.729.1 Speech Codec. In: INTERSPEECH 2010, 11th Annual Conference of the International Speech Communication Association. Makuhari, Japan
Luis Valero M, Hölzer A, Schnell M, Hilpert J, Lutzky M, Engdegård J, Purnhagen H, Ekstrand P, Kjörling K, Oomen W (2010) A New Parametric Stereo and Multichannel Extension for MPEG-4 Enhanced Low Delay AAC (AAC-ELD). In: 128th AES Convention. London, UK
Schnell M, Schmidt M, Ekstrand P, Albert T, Przioda D, Lutzky M, Geiger R, Ruoppila V, Henn F, Tårnes E (2008) Delayless mixing – on the benefits of MPEG-4 AAC-ELD in high quality communication systems. In: 124th AES Convention. Amsterdam, The Netherlands. Preprint 7337
Schnell M, Schmidt M, Jander M, Albert T, Geiger R, Ruoppila V, Ekstrand P, Lutzky M, Grill B (2008) MPEG-4 Enhanced Low Delay AAC – a new standard for high quality communication. In: 125th AES Convention. San Francisco, CA, USA. Preprint 7503
Vaillancourt T, Jelinek M, Ertan AE, Stachurski J, Rämö, A., Laaksonen L, Gibbs J, Mittal U, Bruhn S, Grancharov V, Oshikiri M, Ehara H, Zhang D, Ma F, Virette D, Ragot S (2008) ITU-T EV-VBR: A robust 8–32 kbit\(/\)s scalable coder for error prone telecommunication channels. In: 16th European Signal Processing Conference. Lausanne, Switzerland
Valin JM, Terriberry TB, Maxwell G (2009) A full-bandwidth audio codec with low complexity and very low delay. In: 17th European Signal Processing Conference. Glasgow, Scotland
Xie M, Chu P, Taleb A, Briand M (2009) ITU-T G.719: A new low-complexity full-band (20kHz) audio coding standard for high quality conversational applications. IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, pp 265–268
Xie M, Lindbergh D, Chu P (2006) From itu-t g.722.1 to itu-t g.722.1 annex c: A new low-complexity 14 khz bandwidth audio coding standard
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© 2011 Springer-Verlag Berlin Heidelberg
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Lutzky, M., Schnell, M., Valero, M., Hilpert, J. (2011). MPEG-4 AAC-ELD v2 – The New State of the Art in High Quality Communication Audio Coding. In: Heuberger, A., Elst, G., Hanke, R. (eds) Microelectronic Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23071-4_32
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DOI: https://doi.org/10.1007/978-3-642-23071-4_32
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