Audio compression using a filter ear model and a Gammachirp wavelet

Author

Abid, Khalil ; Ouni, Kais ; Ellouze, Nouredinne

Author_Institution

Lab. of Syst. & Signal Process., ENIT, Tunis, Tunisia

fYear

2009

fDate

18-20 Oct. 2009

Firstpage

208

Lastpage

212

Abstract

In this paper we present a new design of a psycho-acoustic model for audio coding following the model used in the standard MPEG-1 audio layer 3. This architecture is based on the combined external and middle ear model and on the appropriate wavelet packet decomposition instead of a short term Fourier transformation. Its important characteristic is to propose an analysis of the frequency bands that come closer to the critical bands of the ear. This study shows the best performance of the Gammachirp coder.

Keywords

audio coding; data compression; ear; filtering theory; wavelet transforms; Gammachirp wavelet packet decomposition; audio coding; audio compression; filter ear model; frequency band analysis; psycho-acoustic model; standard MPEG-1 audio layer 3; Algorithm design and analysis; Audio compression; Auditory system; Ear; Filters; Frequency; Masking threshold; Psychoacoustic models; Psychology; Wavelet packets; Combined external and middle ear model; FFT; Gammachirp; Psycho-acoustic model; Wavelet Packet Decomposition;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Network & Multimedia Technology, 2009. IC-BNMT '09. 2nd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-4590-5

Electronic_ISBN

978-1-4244-4591-2

Type

conf

DOI

10.1109/ICBNMT.2009.5348480

Filename

5348480