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Paper Abstract and Keywords
Presentation 2007-07-20 11:15
Super-wideband Speech Coding for High Quality VoIP Services
Kei Kikuiri, Nobuhiko Naka, Shinya Abe (NTT DoCoMo) MoMuC2007-39
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes the outline and the subjective quality of a super-wideband speech coding, which we have developed for high quality VoIP (Voice over Internet Protocol) services over a high speed radio communication. It operates at the sampling rate of 22.05 kHz and more, and the bit rate of 48k - 64kbit/s, and offers equivalent subjective quality to the international standard codings ITU-T G.722.1 Annex C and MPEG-4 AAC-LD (Advanced Audio Coding - Low Delay). It provides users with much more comfortable listening environment and more presence than conventional narrowband speech codings. These features can realize such applications as conference call, remote education, and always-online call.
Keyword (in Japanese) (See Japanese page) 
(in English) Super-wideband speech coding / VoIP / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, July 2007.
Paper #  
Date of Issue 2007-07-12 (MoMuC) 
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 MoMuC2007-39

Conference Information
Committee IPSJ-AVM MoNA  
Conference Date 2007-07-19 - 2007-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Niigata Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia Application for Next Generation High-speed Mobile Access 
Paper Information
Registration To MoNA 
Conference Code 2007-07-IPSJ-AVM-MoMuC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Super-wideband Speech Coding for High Quality VoIP Services 
Sub Title (in English)  
Keyword(1) Super-wideband speech coding  
Keyword(2) VoIP  
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1st Author's Name Kei Kikuiri  
1st Author's Affiliation NTT DoCoMo, Inc. (NTT DoCoMo)
2nd Author's Name Nobuhiko Naka  
2nd Author's Affiliation NTT DoCoMo, Inc. (NTT DoCoMo)
3rd Author's Name Shinya Abe  
3rd Author's Affiliation NTT DoCoMo, Inc. (NTT DoCoMo)
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Speaker Author-1 
Date Time 2007-07-20 11:15:00 
Presentation Time 25 minutes 
Registration for MoNA 
Paper # MoMuC2007-39 
Volume (vol) vol.107 
Number (no) no.150 
Page pp.85-88 
#Pages
Date of Issue 2007-07-12 (MoMuC) 


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