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Paper Abstract and Keywords
Presentation 2010-12-20 17:45
The Digital Characteristics of Vocal Language -- The Automata Generated by Digital Signals and Coding Mechanisms --
Kimiaki Tokumaru (System Engineer) NLC2010-20 SP2010-93
Abstract (in Japanese) (See Japanese page) 
(in English) Having visited Cave No.3 of the Klasies River Mouth Caves, the oldest modern human site in the world with the confirmed human residence between 130,000 - 60,000 BP, along the Indian Ocean coast of Eastern Cape Province of Republic of South Africa in 2007, the author started to contemplate on the origin and mechanism of language.[1] Inside-cave environments are extremely safe, quiet and dark which makes residents sound sensitive, and the cave consists of acoustic shelter where one can freely make sound without any danger. It is plausible that language and modern human were born inside cave.
Through interdisciplinary researches on linguistics, acoustic engineering, communication engineering, psychology, anthropology/primatology, neurophysiology, logistics, molecular biology and information theory, the author came to a hypothesis that the unique fundamental difference between human and non-human-animals lies in digitalization of vocal communications, i.e. language.
However, he could not find out any appropriate definition for 'digital'. Therefore, he went through the Information Theory classics such as Shannon, Wiener and von Neumann in order to explore and formulate an objective, necessary and sufficient definition for 'digital'. It became clear that the 'digital' concept is wider and deeper than expected, and that it seems to be the principle which enables 'information networks' and 'self-reproducing automata'.
This presentation is a summary of more than 20 presentations made in 2010 at relevant SIGs in IPSJ, IEICE and JSAI.
Keyword (in Japanese) (See Japanese page) 
(in English) Origin of Humans / Origin of Language / Digital Communications / Entropic Gain / Automata / Information Network / Generative Grammar / Concept System/Operation  
Reference Info. IEICE Tech. Rep., vol. 110, no. 357, SP2010-93, pp. 61-66, Dec. 2010.
Paper # SP2010-93 
Date of Issue 2010-12-13 (NLC, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 NLC2010-20 SP2010-93

Conference Information
Committee NLC SP  
Conference Date 2010-12-20 - 2010-12-21 
Place (in Japanese) (See Japanese page) 
Place (in English) National Olympics Memorial Youth Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information Access, Speech and Language Processing, etc. 
Paper Information
Registration To SP 
Conference Code 2010-12-NLC-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Digital Characteristics of Vocal Language 
Sub Title (in English) The Automata Generated by Digital Signals and Coding Mechanisms 
Keyword(1) Origin of Humans  
Keyword(2) Origin of Language  
Keyword(3) Digital Communications  
Keyword(4) Entropic Gain  
Keyword(5) Automata  
Keyword(6) Information Network  
Keyword(7) Generative Grammar  
Keyword(8) Concept System/Operation  
1st Author's Name Kimiaki Tokumaru  
1st Author's Affiliation System Engineer (System Engineer)
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Speaker Author-1 
Date Time 2010-12-20 17:45:00 
Presentation Time 25 minutes 
Registration for SP 
Paper # NLC2010-20, SP2010-93 
Volume (vol) vol.110 
Number (no) no.356(NLC), no.357(SP) 
Page pp.61-66 
Date of Issue 2010-12-13 (NLC, SP) 

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