Adaptive filtering for echo cancellation and hearing aids 


Please contact me at if interested in receiving the matlab code used for a specific paper.



  1. R. Pogula, T. Kishore Kumar, F. Albu, "Robust Sparse Normalized LMAT Algorithms for Adaptive System Identification Under Impulsive Noise Environments ", Circuits, Systems and Signal Processing,  Volume: 38,   Issue: 11, :pp. 5103-5134, NOV 2019 
  2. M. T. Akhtar, F. Albu and A. Nishihara, “Acoustic feedback cancellation in hearing aids using dual adaptive filtering and gain-controlled probe signal", Biomedical Signal Processing and Control, Vol. 52, July 2019, Pages 1-13.
  3. R. Pogula, T. Kishore Kumar, F. Albu, "Novel Sparse Algorithms based on Lyapunov Stability for Adaptive System Identification", Radioengineering, vol. 27(1), pp. 270-280, Apr. 2018 
  4. S. Pradham, N.V. George, F. Albu and S. Nordholm “ Two microphone acoustic feedback cancellation in digital hearing aids: A step size controlled frequency domain approach", Applied Acoustics 2018, vol. 132, pp. 142-151 
  5. Y. Li, Y. Wang, F. Albu and J. Jiang “A General Zero Attraction Proportionate Normalized Maximum Correntropy Criterion Algorithm for Sparse System Identification", Symmetry 2017,  9, 229; doi:10.3390/sym9100229
  6. Y. Wang, Y. Li, F. Albu and R. Yang, “Group-Constrained Maximum Correntropy Criterion Algorithms for Estimating Sparse Mix-Noised Channel", Entropy 2017, 19(8), 432; doi:10.3390/e19080432
  7. Y. Li, Y. Wang, R. Yang and F. Albu, A Soft Parameter Function Penalized Normalized Maximum Correntropy Criterion Algorithm for Sparse System Identification”, Entropy 2017, 19(1), 45; doi:10.3390/e19010045
  8. F. Albu, H.K. Kwan, “Memory Improved Proportionate Affine Projection Sign Algorithm”, IET Electronics Letters, October 2012, pp. 1279-1281. Matlab code for MIP-APSA
  9. Y.Zakharov and F. Albu, "Coordinate descent iterations in fast affine projection algorithm" , IEEE Signal Processing Letters, Vol. 12, Issue 5, May 2005, pp: 353-356   Citations link
  10. F. Albu, H.K. Kwan, "Fast block exact Gauss-Seidel pseudo affine projection algorithm", IEE Electronics Letters, Oct. 2004, pp. 1451-1453, Vol. 40, Issue:22   Citations link





  1. W. Shi, Y. Li and F. Albu, "A Norm Penalized Noise-free Maximum Correntropy Criterion Algorithm," in Proc. of APSIPA ASC 2019, Lanzhou, China, pp. 1717-1720.
  2. X. Huang, Y. Li and F. Albu"A Norm Constraint Lorentzian Algorithm Under Alpha-stable Measurement Noise," in Proc. of APSIPA ASC 2019, Lanzhou, China, pp. 1076-1079. 
  3. F. Yang, F. Albu, and J. Yang, "An Alternative Solution to the Dynamically Regularized RLS Algorithm," in Proc. of APSIPA ASC 2019, Lanzhou, China, pp. 1072-1075. 
  4. R. Pogula, T. Kishore Kumar, F. Albu, "Modified Least-Mean Mixed-Norm Algorithms for Impulsive Noise Environment in Adaptive Sparse System Identification," in Proc. of IEEE TSP 2019, Budapest, Hungary, pp. 557-561. Matlab code 
  5. A. Bobeica, I.C. Dragoi, I. Caciula, D. Coltuc, F. Albu, F. Yang, "Capacity Control for Prediction Error Expansion Based Audio Reversible Data Hiding," in Proc. of ICSTCC 2018, Sinaia, Romania, pp. 810-815.
  6. F. Albu, S. Nordholm and L. T.T. Tran, "The hybrid simplified Kalman filter for adaptive feedback cancellation" in Proc. of COMM 2018 , Bucharest, Romania, pp. 45-50.  
  7. R. Pogula, T. Kishore Kumar, F. Albu, "Complex Domain Adaptive System Identification Using Sparse Affine Projection Normalized Correlation Algorithms Under Impulsive Noises," in Proc. of COMM 2018 , Bucharest, Romania, pp. 61-66. 
  8. F. Albu, L. T.T. Tran, S. Nordholm, A Combined Variable Step Size Strategy for Two Microphones Acoustic Feedback Cancellation using Proportionate Algorithms, APSIPA 2017
  9. F. Albu, Y. Li, Y. Wang, “Low-Complexity Non-Uniform Penalized Affine Projection Algorithms for Active Noise Control ", in Proc. of Eusipco 2017, Kos, Greece, pp. 1315-1319
  10. F. Albu, L. T.T. Tran, S. Nordholm, Two-Microphone Acoustic Feedback Cancellation using NLMS based Algorithms, ECAI 2017
  11. Y. Wang, Y. Li, F. Albu, R. Yang, Sparse Channel Estimation Using Correntropy Induced Metric Criterion Based SM-NLMS Algorithm, IEEE WCNC 2017
  12. F. Albu,  P. S. R. Diniz, “Improved Set-Membership Partial-Update Pseudo Affine Projection Algorithm”, in Proc. of ICCACI 2016, Jaipur, India, pp. 498-501.
  13. Y. Li, Y. Wang, F. Albu, “Sparse Channel Estimation Based on a Reweighted Least-Mean Mixed-Norm Adaptive Filter Algorithm", in Proc. of Eusipco 2016, Budapest, Hungary, pp. 2380-2384.
  14. F. Albu, J. Liu, S.L. Grant, "Approximated Proportionate Affine Projection Algorithms for Block Sparse Identification", in Proc. of ECTI-CON 2016, 2016.
  15. F . Albu,  "Block-Sparse Fast Recursive Approximated Memory Improved Proportionate Affine Projection Algorithm", in Proc. of AES 140, 2016.
  16. F. Albu, J. Liu, S.L. Grant, "A Fast Filtering Block Sparse Proportionate Affine Projection Sign Algorithm", in Proc.of Communications 2016, Bucharest, 9-11 June 2016.
  17. F. Albu, R. Nakagawa, S. Nordholm, "Proportionate Algorithms for Two Microphones Active Feedback Cancellation", in Proc. of EUSIPCO 2015, pp. 290-294
  18. F. Albu, "Fast Recursive AMIPAP algorithm", in Proc. of ECAI 2015, June 2015, Vol. 2, AF7-AF10.
  19. F. Albu, "The Proportionate APL-I algorithm", in Proc. of IEEE ICTRC 2015, May 2015, pp. 183-186.
  20. F. Albu, H. Coanda, “A Fast Filtering Proportionate Affine Projection Sign Algorithm”, in Proc. of IEEE SPA 2014 conference, Poznan, Poland, September 2014, pp. 25-30 Best paper award. Picture
  21. F. Albu, H. Coanda, D. Coltuc, & M. Rotaru, “Intermittently Updated Simplified Proportionate Affine Projection Algorithm”, in Proc. of ADAPTIVE 2014, pp. 42-47, 2014.
  22. C. R. C. Nakagawa, S. Nordholm, F. Albu, W.-Y. Yan, "Closed-loop feedback cancellation utilizing two microphones and transform domain processing", in Proc. of ICASSP 2014, pp. 3673-3677, 2014
  23. M. Rotaru, S. Ciochina, F. Albu,”An Efficient GSC VSS-APA Beamformer with Integrated Log-energy Based VAD for Noise Reduction in Speech Reinforcement Systems”, in Proc. of ISSCS 2013, Iasi, Romania
  24. M. Rotaru, C. Stanciu, S. Ciochina, F. Albu, H. Coanda, “A FPGA Implementation of Prediction Error Method for Active Feedback Cancellation using Xilinx System Generator”, ADAPTIVE 2013, Valencia, Spain, pp. 26-29. 
  25. F. Albu, H.K.Kwan, “New proportionate affine projection sign algorithms”, in Proc. of ISCAS 2013, Beijing, China, 2013, pp. 521 - 524
  26. F. Albu, M. Rotaru, R. Arablouei, and K. Do─čançay, ”Intermittently-updated affine projection algorithm”, in Proc. of ICASSP 2013, pp. 585 - 589 
  27. F. Albu, D. Coltuc, D. Comminiello, M. Scarpiniti,  “The variable step size regularized block exact affine projection algorithm”, ” in Proc. of ISETC  2012, Timisoara, Romania, 15-16 November 2012, pp.  283-286 
  28. M. Rotaru, F. Albu, H. Coanda, “A Variable Step Size Modified Decorrelated NLMS Algorithm for Adaptive Feedback Cancellation in Hearing Aids, ” in Proc. of ISETC  2012, Timisoara, Romania, 15-16 November 2012, pp.  263-266  Matlab code
  29. A. Gonzalez, M. Ferrer, F. Albu, and M. de Diego, “Affine projection algorithms: evolution to smart and fast multichannel algorithms and applications”, in Proc. of EUSIPCO 2012, Bucharest, Romania, 2012, pp. 1965-1969  
  30. F. Albu,  “New proportionate affine projection algorithm”, in INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 2012, no. 11, pp. 417-424. Institute of Noise Control Engineering, 2012, New York, U.S.A.  
  31. F. Albu, C. Paleologu, S. Ciochina, “New variable step size affine projection algorithms", in Proc. of IEEE COMM 2012, Bucharest, Romania, 2012, pp. 63-66
  32. F. Albu, “Simplified proportionate affine projection algorithms”, in Proc. of IWSSIP 2012, Vienna, Austria, 2012, pp. 382-385. 
  33. F. Albu, “Improved Variable Forgetting Factor Recursive Least Square Algorithm”, in Proc. of IEEE ICARCV 2012, Guangzhou, China, pp. 1789 - 1793, 2012 Matlab code 
  34. F. Albu, “A proportionate affine projection algorithm using fast recursive filtering and dichotomous coordinate descent iterations”, in Proc. of EURASIP SPAMEC 2011, Cluj Napoca, Romania, 2011, pp. 93-96 presentation
  35. F. Albu, C. Paleologu, J. Benesty, “A variable step size evolutionary affine projection algorithm,” in Proc. IEEE ICASSP, 2011,  Prague, Czech Republic, May 2011, pp. 429-432. 
  36. F. Albu, C. Paleologu, J. Benesty, Efficient Implementation of a Variable Projection Order Affine Projection AlgorithmInternational Symposium on Wireless Communication Systems (ISWCS), York, U.K., Sept. 2010, pp. 369-373. Matlab code
  37. F. Albu, C. Paleologu, J. Benesty, and S. Ciochina, A low complexity proportionate affine projection algorithm for echo cancellation, in Proc. EUSIPCO, Aalborg, Denmark, August 2010, pp. 6-10. Matlab code
  38. F. Albu, C. Paleologu, J. Benesty,  Gauss-Seidel based Variable Step-Size Affine Projection Algorithms for Acoustic Echo Cancellation , Proc. European Signal Processing Conference (EUSIPCO), pp. 2007-2011, Glasgow, Scotland, 2009 
  39. F. Albu, C. Paleologu, J. Benesty, Y. V. Zakharov, Variable Step Size Dichotomous Coordinate Descent Affine Projection AlgorithmProc. IEEE EUROCON, pp. 1366-1371, St. Petersburg, Rusia, 2009. Matlab code
  40. F. Albu, H.K. Kwan, A new block exact affine projection algorithm, Proceedings of IEEE ISCAS 2005, Kobe, Japan, May 2005, pp. 4337-4340    Citations link
  41. F. Albu, C. Kotropoulos, Modified Gauss-Seidel affine projection algorithm for acoustic echo cancellation, Proceedings of IEEE ICASSP 2005, Philadelphia, U.S.A, April 2005, pp. 121-124 Citations link
  42. F. Albu, The use of the Gauss-Sidel Fast Affine Projection and NLMS Algorithms for Oversampled Subband Acoustic Echo FiltersProceedings of International Conference "Communications 2004", June 03-05, 2004, Bucharest, Romania, pp.91-94 
  43. F. Albu, H.K. Kwan, Combined echo and noise cancellation based on Gauss-Seidel pseudo affine projection algorithm, Proceedings of the ISCAS 2004, vol. 3, pp. 505-508, 2004 Citations link
  44. F. Albu, J. Kadlec, N. Coleman, A. Fagan, "The Gauss-Seidel Fast Affine Projection Algorithm", IEEE Workshop SIPS 2002, pp. 109-114, San Diego, U.S.A, October 2002 
  45. F. Albu, A. Fagan, "The Gauss-Seidel pseudo affine projection algorithm and its application for echo cancellation", 2003 Conference Record of the Thirty-Seventh Asilomar Conference on, pp. 1303-1306, 2003Citations link 


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