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MPEG Audio Compression Basics

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The MPEG Representation of Digital Media

Abstract

MPEG Audio was the first international standard for high quality audio coding and it opened the doors to a variety of applications in the world of digital music. In this chapter we review the basic ideas and features behind the general purpose, perceptual audio coders specified in the MPEG-1 and MPEG-2 audio standards which include the MP3 and AAC formats. The widely successful MP3 and AAC coders represent some of the most remarkable achievements of the MPEG committee that highly influenced not only the technology but also largely enabled different ways of digital media consumption.

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Notes

  1. 1.

    Although this notation may suggest that we are blending the input signals in the time domain, this approach is usually carried out in the frequency domain over a frequency range in which the power of the spectral lines is similar in the two channels. This is because there is not much correlation between stereo channels in the time domain. In general, stereo redundancies can be more easily exploited for systems with high frequency resolution.

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Authors and Affiliations

  1. CCRMA, Stanford University, Stanford, CA, USA

    Marina Bosi

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  1. Marina Bosi
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Correspondence to Marina Bosi .

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  1. Via Borgionera 103, Villar Dora, 10040, Italy

    Leonardo Chiariglione

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Bosi, M. (2012). MPEG Audio Compression Basics. In: Chiariglione, L. (eds) The MPEG Representation of Digital Media. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6184-6_6

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  • DOI: https://doi.org/10.1007/978-1-4419-6184-6_6

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