I have been working on wavelet transform (or subband decomposition) since 1987. Here is a wavelet review document

To the best of our knowledge myself and my students are the first group of people who used wavelet transform in speech recognition applications for feature extraction (see e.g. [pdf] and the refereces in [pdf] ).

Here is a list of our papers on adaptive wavelet transform. Final versions of the papers are available in O.N. Gerek's web page. Please click links to download papers.

- Gerek ON, Cetin AE A 2-D orientation adaptive prediction filter in lifting structures for image coding IEEE TRANSACTIONS ON IMAGE PROCESSING 15 (1): 106-111 JAN 2006

- O.N. Gerek, A. E. Cetin, Adaptive polyphase subband decomposition structures for image compression IEEE Transactions on Image Processing, 2000 - ieeexplore.ieee.org AbstractSubband decomposition techniques have been extensively used for data coding and analysis. In most filter banks, the goal is to obtain suAbsampled ... Cited by 35 - Web Search - mm.anadolu.edu.tr - ieeexplore.ieee.org . Here is an early version of the article

- Linear/nonlinear adaptive polyphase subband decomposition structures for image compression ON Gerek, AE Cetin - Acoustics, Speech, and Signal Processing, 1998. ICASSP'98. , 1998 - ieeexplore.ieee.org ... Linear/nonlinear adaptive polyphase subband decomposition structures for image compression Gerek, ON Cetin, AE Dept. of Electr. ... Cited by 7

- Polyphase adaptive filter banks for fingerprint image compression ON Gerek, AE Cetin - Electronics Letters, 1998 - mm.anadolu.edu.tr Perfect reconstruction adaptive polyphase filter banks: We propose an adaptive subband decomposition structure for compressing finger- print images [1]. ... Cited by 2 -

- M. Nafi Gürcan, Ömer N. Gerek, A. Enis Çetin, Nonlinear Subband Decomposition structures in GF-(N) Arithmetic,' Signal Processing, Vol. 64, No. 2, pp. 209-213, Feb. 1998.

- E. Erzin, A. Enis Cetin, Y. Yardimci, " Subband Analysis for robust speech recognition in the presence of car noise," Proceedings of IEEE International Conf. on Acoustics, Speech, and Signal Processing, 1995. ICASSP '95. Issue Date: 15-19 Mar 1995 On page(s): 417 - 421 vol.1 . [pdf] A. Enis

- F. Jabloun, A. Enis Cetin, E. Erzin, "Teager energy based feature parameters for speech recognition in car noise," IEEE Signal Processing Letters Volume: 6, Issue 10, Oct. 1999, pp 259-261. [pdf]

- F. Jabloun, A. Enis Cetin," The Teager energy based feature parameters for robust speech recognition in car noise," Proceedings of IEEE International Conf. on Acoustics, Speech, and Signal Processing, 1999. ICASSP '99. Issue Date: 15-19 Mar 1999 On page(s): 273 - 276 vol.1 . [pdf]

- A. Murat Bagci, Yasemin Yardimci and A. Enis Çetin, "Moving object detection using adaptive subband decomposition and fractional lower-order statistics in video sequences", Signal Processing, Elsevier, Volume 82, Issue 12, December 2002, pp. 1941-1947. [pdf]

- A. M. Bagci and A. E. Cetin, "Detection of microcalcifications in mammograms using local maxima and adaptive wavelet transform analysis" IEE Electronics Letters, Volume: 38, Issue: 22, Oct 2002 pp. 1311-1312.

- Lossless image compression by LMS adaptive filter banks R Oktem, AE Cetin, ON Gerek, L Oktem, K Egiazarian - Signal Processing, 2001 - portal.acm.org

- A class of linear-phase regular biorthogonal wavelets , CW Kim, R Ansari, AE Cetin - Proc. IEEE Int. Conference on Acoustics, Speech, Signal ., 1992 - ieeexplore.ieee.org Page 1 IIIIII A CLASS OF LINEAR-PHASE REGULAR BIORTHOGONAL WAVELETS Chai W. Kim, Rashid Ansari and A. Enis Cetin University of Pennsylvania, Philadelphia, PA

- A multiresolution nonrectangular wavelet representation for two-dimensional signals Signal Processing, Volume 32, Issue 3, June 1993, Pages 343-355 A. Enis Cetin

- R. Ansari, A. E. Cetin and S. H. Lee, Subband Coding of Images using Nonrectangular Filter Banks,' {\em Proc. of the SPIE 32nd Annual International Technical Symposium: Applications of Digital Signal Processing}, San Diego, CA, vol. 974, August 1988.