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Paper Abstract and Keywords
Presentation 2014-10-24 15:20
Smart mixing system controlled by manipulating objects in the graphical image
Yuki Tamoto, Wataru Owaki, Kota Takahashi (UEC) EA2014-26
Abstract (in Japanese) (See Japanese page) 
(in English) A smart mixer is a novel audio signal mixer. It mixes audio signals on time-frequency plane made by short-term FFT. In previous proposed amplitude and phase processing, it was necessary to set the many parameters suitable for each audio signals. Therefore, we thought that an user adjusts the spectrum on the time-frequency plane directly and should give a guideline information of the mixing. In this research, we develop smart mixing system that be able to manipulate the spectrum at real-time by using an FPGA and a touch panel. In introducing FPGA, a culculation is made parallel and short-term FFT is able to process at real-time by one sampleshift. Therefore, degradation of a sound quality by interference between frames is eliminated.
In this paper, two proposal are described. First, we implement the smart mixer on an FPGA and propose the real-time mixing system. Second, we mount a touch panel to smart mixing system, and enable to manipulate the spectrum on the time-frequency plane. Also, we demonstrate the effectiveness of the method with which user of giving a guideline information of the mixing.
Keyword (in Japanese) (See Japanese page) 
(in English) mixing / time-frequency plane / FPGA / one sample frameshift FFT / real-time signal processing / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 274, EA2014-26, pp. 15-19, Oct. 2014.
Paper # EA2014-26 
Date of Issue 2014-10-17 (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 EA2014-26

Conference Information
Committee EA  
Conference Date 2014-10-24 - 2014-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Central Research Laboratory, Hitachi, Ltd. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2014-10-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Smart mixing system controlled by manipulating objects in the graphical image 
Sub Title (in English)  
Keyword(1) mixing  
Keyword(2) time-frequency plane  
Keyword(3) FPGA  
Keyword(4) one sample frameshift FFT  
Keyword(5) real-time signal processing  
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1st Author's Name Yuki Tamoto  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Wataru Owaki  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Kota Takahashi  
3rd Author's Affiliation The The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2014-10-24 15:20:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2014-26 
Volume (vol) vol.114 
Number (no) no.274 
Page pp.15-19 
#Pages 5 
Date of Issue 2014-10-17 (EA) 

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