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Paper Abstract and Keywords
Presentation 2017-03-01 11:15
Study on tolerance of time axis fluctuation of pure white pseudonoisesignal1for impulse response measurement
Kentaro Mori, Yutaka Kaneda (Tokyo Denki Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In impulse response measurement, a time-invariant linear system is assumed. Therefore, measurement errors arise when there is temporal fluctuation in transmission systems caused by wind during measurement in a large space or a minute difference between the sampling periods of a digital-to-analog (DA) reproducing system and an analog-to-digital (AD) recording system. The magnitude of the errors depends on the type of measurement signal. The magnitude is small when a swept sine signal, such as a time-stretched pulse (TSP), is used; however, it is large when a pseudonoise signal, such as a maximum length sequence (M-sequence), is used. We consider that this error is caused by the fact that conventional white pseudonoise does not have a white continuous spectrum whereas its discrete spectrum is white. In this study, a new pseudonoise signal with a white continuous spectrum is proposed. We call this new signal a “pure white pseudonoise signal”, and its generation algorithm is presented. Simulations and experiments in a real environment show the effectiveness of the pure white pseudonoise signal for ensuring tolerance to time axis fluctuation.
Keyword (in Japanese) (See Japanese page) 
(in English) Impulse response / Pseudo noise / Time jitter / Pure white pseudo noise / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 475, EA2016-86, pp. 25-30, March 2017.
Paper # EA2016-86 
Date of Issue 2017-02-22 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee SP SIP EA  
Conference Date 2017-03-01 - 2017-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2017-03-SP-SIP-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on tolerance of time axis fluctuation of pure white pseudonoisesignal1for impulse response measurement 
Sub Title (in English)  
Keyword(1) Impulse response  
Keyword(2) Pseudo noise  
Keyword(3) Time jitter  
Keyword(4) Pure white pseudo noise  
1st Author's Name Kentaro Mori  
1st Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
2nd Author's Name Yutaka Kaneda  
2nd Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
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Date Time 2017-03-01 11:15:00 
Presentation Time 25 
Registration for EA 
Paper # IEICE-EA2016-86,IEICE-SIP2016-141,IEICE-SP2016-81 
Volume (vol) IEICE-116 
Number (no) no.475(EA), no.476(SIP), no.477(SP) 
Page pp.25-30 
#Pages IEICE-6 
Date of Issue IEICE-EA-2017-02-22,IEICE-SIP-2017-02-22,IEICE-SP-2017-02-22 

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