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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Study of audio AAC encoding and developing an optimized Encoder

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Heddari, Wafaa ULiège
Promotor(s) : Redouté, Jean-Michel ULiège
Date of defense : 24-Jun-2021/25-Jun-2021 • Permalink : http://hdl.handle.net/2268.2/11545
Details
Title : Study of audio AAC encoding and developing an optimized Encoder
Author : Heddari, Wafaa ULiège
Date of defense  : 24-Jun-2021/25-Jun-2021
Advisor(s) : Redouté, Jean-Michel ULiège
Committee's member(s) : Vanderheyden, Benoît ULiège
Vanderbemden, Philippe ULiège
Language : English
Discipline(s) : Engineering, computing & technology > Electrical & electronics engineering
Name of the research project : Study of audio AAC encoding and developing an optimized Encoder
Target public : Student
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master : ingénieur civil électricien, à finalité spécialisée en "signal processing and intelligent robotics"
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] For high-quality, multichannel, and digital audio compression, MPEG advanced audio coding (AAC) and its successors become the most important pillars of the Moving Picture Experts Group (MPEG) family. MPEG AAC offers a wide range of applications, from low bitrate Internet audio to multichannel broadcasting services, thanks to its numerous working modes and configurations.
In this thesis, we are going to study the different blocks of an AAC encoder based on the standard ISO/IEC 13818-7 such as the psychoacoustic model, Gain control, Transform block, Spectral processing, Quantization and Entropy coding. Then From the FFMPEG Codec which is based on the standard we will propose some Optimizations regarding the Encoder, like Removal of block switching, Fast MDCT, and Optimized TNS. And then test their implementation on C Code to compare the compilation speed between the original Codec and the optimized one.


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Author

  • Heddari, Wafaa ULiège Université de Liège > Master ingé. civ. électr., à fin.

Promotor(s)

Committee's member(s)

  • Vanderheyden, Benoît ULiège Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes
    ORBi View his publications on ORBi
  • Vanderbemden, Philippe ULiège Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
    ORBi View his publications on ORBi
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