A second-order Volterra filter-based nonlinear clipping detector
- Authors
- Park, Jihwan; Chang, Joon Hyuk
- Issue Date
- Dec-2016
- Publisher
- TUBITAK SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY
- Keywords
- Acoustic echo canceller; nonlinear clipping detector; nonlinear echo; Volterra filter
- Citation
- TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, v.24, no.6, pp.4849 - 4857
- Indexed
- SCIE
SCOPUS
- Journal Title
- TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
- Volume
- 24
- Number
- 6
- Start Page
- 4849
- End Page
- 4857
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/4852
- DOI
- 10.3906/elk-1411-33
- ISSN
- 1300-0632
- Abstract
- In this paper, we propose a novel nonlinear clipping detector based on the second-order Volterra filter for an acoustic echo canceller (AEC). Since the performance of the conventional AEC algorithm drastically deteriorates when nonlinear clipping occurs, the adaptive filter pauses adaptation during the nonlinear clipping periods to avoid unwanted divergence. These nonlinear clipping periods are detected in our method using the magnitude spectrum of the quadratic Volterra filter in lower frequency ranges. Through extensive computer-based simulation results considering an acoustic room environment and various clipping levels, it is found that the proposed approach is effective in detecting the nonlinear clipping periods and improving AEC performance compared to the conventional AEC algorithm.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 융합전자공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/4852)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.