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Paper Abstract and Keywords
Presentation 2015-06-18 12:00
Compensation of Nonlinear Distortions for Parametric Array Loudspeakers -- In the case of changing the amplitude of input signal --
Yuta Hatano, Satoshi Kinoshita, Chuang Shi, Yoshinobu Kajikawa (Kansai Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Reproduction sound of the parametric array loudspeaker (PAL) contains many nonlinear distortions.
Nonlinear distortions can be compensated by using the linearization system based on Volterra lters. In this paper,
we compare the compensation amount of nonlinear distortions in cases where the amplitude of the input signal to
the PAL is changed. As a result, the compensation amount is decreased for large input signal compared with small input signal because the small input signal yields inaccurate Volterra kernels. We therefore propose an identification method where the 2nd order Volterra kernel is identified by separating the 2nd and 4th order nonlinear components in order to increase the estimation accuracy. Experimental results demonstrate that the proposed identification method can improve the identification accuracy and yield high compensation ability to the linearization system compared with the conventional identification method.
Keyword (in Japanese) (See Japanese page) 
(in English) Volterra fiter / Parametric Array Loudspeaker(PAL) / Nonlinear Distortion / Total Harmonic Distortion (THD) / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 89, SIP2015-50, pp. 99-102, June 2015.
Paper # SIP2015-50 
Date of Issue 2015-06-10 (CAS, VLD, SIP, MSS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee MSS CAS SIP VLD  
Conference Date 2015-06-17 - 2015-06-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Otaru University of Commerce 
Topics (in Japanese) (See Japanese page) 
Topics (in English) System, signal processing and related topics 
Paper Information
Registration To SIP 
Conference Code 2015-06-MSS-CAS-SIP-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Compensation of Nonlinear Distortions for Parametric Array Loudspeakers 
Sub Title (in English) In the case of changing the amplitude of input signal 
Keyword(1) Volterra fiter  
Keyword(2) Parametric Array Loudspeaker(PAL)  
Keyword(3) Nonlinear Distortion  
Keyword(4) Total Harmonic Distortion (THD)  
1st Author's Name Yuta Hatano  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Satoshi Kinoshita  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Chuang Shi  
3rd Author's Affiliation Kansai University (Kansai Univ.)
4th Author's Name Yoshinobu Kajikawa  
4th Author's Affiliation Kansai University (Kansai Univ.)
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Date Time 2015-06-18 12:00:00 
Presentation Time 25 
Registration for SIP 
Paper # IEICE-CAS2015-19,IEICE-VLD2015-26,IEICE-SIP2015-50,IEICE-MSS2015-19 
Volume (vol) IEICE-115 
Number (no) no.87(CAS), no.88(VLD), no.89(SIP), no.90(MSS) 
Page pp.99-102 
#Pages IEICE-4 
Date of Issue IEICE-CAS-2015-06-10,IEICE-VLD-2015-06-10,IEICE-SIP-2015-06-10,IEICE-MSS-2015-06-10 

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