| 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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