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| Presentation | 2015-10-16 10:50 Switch-To-Speech Communication Aid System Using WFST and Low Latency Search Algorithm Fuming Fang, Takahiro Shinozaki (Tokyo Tech)  SP2015-68 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To establish a communication method for the patients who have lost nearly all of their voluntary movement including speech, we have proposed a switch-to-speech communication aid system. Since this system can directly convert the motion sequence into string of characters using an input protocol, it is portable compared to the other system that uses a large display. In order to produce efficient and easily-learned protocol, we have also proposed an input protocol recommendation method. This method produces a protocol that has less combination of motions to be remembered by mapping multiple Kana characters to the same motion sequence. To compensate for the introduced ambiguity of converting input motion sequence to Kana sequence, a word N-gram language model is used. However, the method has a problem that there is a large delay before intended Kana is output after the corresponding motion sequence is input since it requires to search a long language context. In this paper, we first propose to adopt a Kana N-gram instead of a high precision word N-gram. Secondly, we propose a low latency search algorithm at the expense of accuracy, which compulsorily outputs the best path if the delay exceeds a pre-defined value. These two methods significantly reduce the delay from 4.6 Kana to 0.9 Kana, while the accuracy is slightly reduced from 97.2% to 92.8%. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Communication aid system / WFST / low latency search / N-gram / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 253, SP2015-68, pp. 51-56, Oct. 2015. | |
| Paper # | SP2015-68 | |
| Date of Issue | 2015-10-08 (SP) | |
| 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 | SP2015-68 |
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| Conference Information | |
| Committee | SP |
| Conference Date | 2015-10-15 - 2015-10-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kobe Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Speech interface, Synthesis, Dialogue, Application system, etc. |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2015-10-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Switch-To-Speech Communication Aid System Using WFST and Low Latency Search Algorithm |
| Sub Title (in English) | |
| Keyword(1) | Communication aid system |
| Keyword(2) | WFST |
| Keyword(3) | low latency search |
| Keyword(4) | N-gram |
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| 1st Author's Name | Fuming Fang |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Takahiro Shinozaki |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2015-10-16 10:50:00 |
| Presentation Time | 25 minutes |
| Registration for | SP |
| Paper # | SP2015-68 |
| Volume (vol) | vol.115 |
| Number (no) | no.253 |
| Page | pp.51-56 |
| #Pages | 6 |
| Date of Issue | 2015-10-08 (SP) |
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