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| Paper: | AE-P2.7 |
| Session: | Echo Cancellation and Active Noise Control |
| Time: | Wednesday, May 19, 15:30 - 17:30 |
| Presentation: |
Poster |
| Topic: |
Audio and Electroacoustics: Echo Cancellation |
| Title: |
STEREOPHONIC ACOUSTIC ECHO CANCELLER WITHOUT PRE-PROCESSING |
| Authors: |
Akihiro Hirano; Kanazawa University | | |
| | Kenji Nakayama; Kanazawa University | | |
| | Daisuke Someda; Kanazawa University | | |
| | Masahiko Tanaka; Kanazawa University | | |
| Abstract: |
This paper proposesa stereophonic acoustic echo canceller without pre-processingwhich can identify the correct echo-paths.By dividing the filter coefficients into two portionsand update one part at a time,the filter coefficient have an unique solution.Convergence analysis clarifiesthe condition for correct echo-path identification.For fast convergence and stable adaptation,a convergence detection and an adaptive step-size are also introduced.The modification amount of the filter coefficientsdetects the convergence and also determines the step-size.Computer simulations show 10dB smaller coefficient errorthan those of the conventional algorithms. |
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