Name
Title | ||
|---|---|---|
Acoustic feedback cancellation based on weighted adaptive projection subgradient method in hearing aids |
Abstract | ||
|---|---|---|
Acoustic feedback is an important factor that degrades the overall performance of hearing aids, and acoustic feedback cancellation has always been the research focus in the field of signal processing in hearing aids. The newly suggested adaptive projection subgradient method (APSM) for adaptive signal processing solves the problem of difficulty in finding the exact projection operator in the realization of affine projection by taking the subgradient projection hyperplane as the searching region for relaxed projection. This work applies APSM in the acoustic feedback cancellation system of hearing aids for the first time, and proposes a weighted adaptive projection subgradient method (WAPSM), which takes into consideration the exponential decay weight factor to incorporate the prior information of estimation system. The new method is compared with the traditional NLMS algorithm and APSM algorithm in simulation experiments. Incorporating the prior information of estimation system by setting the proper weighting matrix, WAPSM achieved notable improvements on the speed, stability and accuracy of the misalignment convergence. Numerical experiments demonstrate that the proposed algorithm is more robust for low SNR and real speech segment input than the traditional algorithms. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1016/j.sigpro.2009.05.025 | Signal Processing |
Keywords | Field | DocType |
weighted adaptive projection subgradient method (wapsm),apsm algorithm,acoustic feedback cancellation,hearing aid,acoustic feedback,estimation system,adaptive projection subgradient method,exact projection operator,subgradient projection hyperplane,weighted adaptive projection subgradient,affine projection,hearing aids,prior information,adaptive signal processing,simulation experiment,projection operator,subgradient method,speech segmentation,signal processing,exponential decay | Convergence (routing),Signal processing,Mathematical optimization,Weighting,Subgradient method,Control theory,Projection (linear algebra),Audio feedback,Adaptive filter,Hyperplane,Mathematics | Journal |
Volume | Issue | ISSN |
90 | 1 | Signal Processing |
Citations | PageRank | References |
4 | 0.44 | 10 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Qingyun Wang | 1 | 5 | 1.48 |
| Li Zhao | 2 | 6 | 2.16 |
| Jie Qiao | 3 | 5 | 3.50 |
| Cairong Zou | 4 | 415 | 27.19 |