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Telecommunication Systems

, Volume 9, Issue 3–4, pp 375–391 | Cite as

A pattern classification proposal for object‐oriented audio coding in MPEG‐4

  • Francesco Beritelli
  • Salvatore Casale
  • Marco Russo
Article

Abstract

The future MPEG‐4 standard will adopt an object‐oriented encoding strategy whereby an audio source is encoded at a very low bit‐rate by adapting a suitable coding scheme to the local characteristics of the signal. One of the most delicate issues in this approach is that the overall performance of the audio encoder greatly depends on the accuracy with which the input signal is classified. This paper shows that the difficult problem of audio classification for object‐oriented coding can be effectively solved by selecting a salient set of acoustic parameters and adopting a fuzzy model for each audio object, obtained by a soft computing‐hybrid learning tool. The audio classifier proposed operates at two levels: recognition of the class to which the input signal belongs (talkspurt, music, noise, signaling tones) and then recognition of the subclass to which it belongs. The results obtained show that fuzzy logic is a valid alternative to the matching techniques of a traditional pattern recognition approach.

Keywords

Fuzzy Logic Input Signal Encode Strategy Fuzzy Model Acoustic Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Francesco Beritelli
    • 1
  • Salvatore Casale
    • 1
  • Marco Russo
    • 1
  1. 1.Istituto di Informatica e TelecomunicazioniUniversity of CataniaCataniaItaly E-mail:

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