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Comparison of two HE-AAC Codec Implementations Based on Objective Quality Assessment

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00312006" target="_blank" >RIV/68407700:21230/17:00312006 - isvavai.cz</a>

  • Result on the web

    <a href="http://radio.feld.cvut.cz/conf/poster/proceedings/Poster_2017/Section_EI/EI_042_Smutny.pdf" target="_blank" >http://radio.feld.cvut.cz/conf/poster/proceedings/Poster_2017/Section_EI/EI_042_Smutny.pdf</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Comparison of two HE-AAC Codec Implementations Based on Objective Quality Assessment

  • Original language description

    Although normatives of codecs usually contain typical Q-R (Quality-Rate) curves, there are not such curves comparing different implementations of the same codec. In this paper, we describe the experiment of assessing the audio quality of two implementations of the HE-AAC codec created by Fraunhofer institute (FDK AAC (libfdk-aac from FFmpeg) and FhG AAC (enc_fhgaac from Winamp)) in three profiles (AAC-LC, HE-AAC v1 and HE-AAC v2). For assessing the quality, a PEAQ algorithm was used. The quality assessment was performed on the ITU-R BS.1387 audio sample database. The bitrate of samples was chosen from 24 to 112 kbps in 8 kbps increments. The experiment showed, that although the Winamp codec performed generally better than the FFmpeg one, the quality of AAC-LC and HE-AAC v1 does not differ dramatically. However, it is not case of the HE-AAC v2 profile in FDK AAC, which gave very bad results unlike the same profile in FhG AAC codec. It was proved, that, based on the difference in quality, the two implementations are different.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20201 - Electrical and electronic engineering

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the International Student Scientific Conference Poster – 21/2017

  • ISBN

    978-80-01-06153-4

  • ISSN

  • e-ISSN

  • Number of pages

    7

  • Pages from-to

    1-7

  • Publisher name

    Czech Technical University in Prague

  • Place of publication

    Praha

  • Event location

    Praha

  • Event date

    May 23, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article