Title :
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
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;
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
DOI :
10.1109/ICBNMT.2009.5348480
