Paper Abstract and Keywords |
Presentation |
2010-03-26 15:15
Evaluation of a nonlinear-echo canceller applied to a hands-free communication system with sampling-frequency offsets Yasuhiro Mochida (Univ. of Tokyo), Osamu Hoshuyama, Toshiyuki Nomura (NEC) EA2009-118 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper provieds a performance evaluation of a nonlinear-echo canceller (NLEC) applied to a hands-free communication system with sampling-frequency offsets. When a conventional echo canceller using linear adaptive filter (EC-LAF) is used for the system, it cannot cancel out the echo because the optimal echo path fluctuates. However, the echo replica, which is the output signal of EC-LAF, and the residual echo have correlation, which is similar to the residual echo model in the NLEC and leads to the effectiveness of the NLEC. Simulations with speech signals including doubletalk periods demonstrate that the echo suppression performance of the NLEC is approximately 20 dB higher than that of the EC-LAF. Furthermore, mean opinion score shows that the near-end speech quality of the NLEC is 0.5 point higher than that of EC-LAF. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
hands-free communication / sampling-frequency offset / nonlinear-echo canceller / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 472, EA2009-118, pp. 19-24, March 2010. |
Paper # |
EA2009-118 |
Date of Issue |
2010-03-19 (EA) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
EA2009-118 |
Conference Information |
Committee |
EA |
Conference Date |
2010-03-26 - 2010-03-26 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
|
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
|
Paper Information |
Registration To |
EA |
Conference Code |
2010-03-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Evaluation of a nonlinear-echo canceller applied to a hands-free communication system with sampling-frequency offsets |
Sub Title (in English) |
|
Keyword(1) |
hands-free communication |
Keyword(2) |
sampling-frequency offset |
Keyword(3) |
nonlinear-echo canceller |
Keyword(4) |
|
Keyword(5) |
|
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Yasuhiro Mochida |
1st Author's Affiliation |
The University of Tokyo (Univ. of Tokyo) |
2nd Author's Name |
Osamu Hoshuyama |
2nd Author's Affiliation |
NEC Corporation (NEC) |
3rd Author's Name |
Toshiyuki Nomura |
3rd Author's Affiliation |
NEC Corporation (NEC) |
4th Author's Name |
|
4th Author's Affiliation |
() |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2010-03-26 15:15:00 |
Presentation Time |
30 minutes |
Registration for |
EA |
Paper # |
EA2009-118 |
Volume (vol) |
vol.109 |
Number (no) |
no.472 |
Page |
pp.19-24 |
#Pages |
6 |
Date of Issue |
2010-03-19 (EA) |
|