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Paper Abstract and Keywords
Presentation 2021-03-04 15:45
Nonlinear Modeling of Electro-dynamic Loudspeaker by Nonlinear IIR Filter
Kenta Iwai, Takanobu Nishiura (Ritsumeikan Univ.) EA2020-86 SIP2020-117 SP2020-51
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we introduce the nonlinear modeling of an electro-dynamic loudspeaker by a nonlinear IIR filter. There are some approaches for the nonlinear modeling of the electro-dynamic loudspeaker, for example, a nonlinear differential equation model based on the equivalent circuit of the loudspeaker. In this method, the nonlinear characteristic of the loudspeaker is represented as a nonlinear filter combined with the multi-dimensional Laplace transform. We have studied the discrete time domain version of this nonlinear model and showed this model can be represented as the multi-dimensional infinite impulse response (IIR) filter. However, its coefficients should be represented by complicated equations and it is difficult to use this model for analyzing the nonlinear characteristic of the loudspeaker. In this paper, we obtain the multi-dimensional digital filter for the electro-dynamic loudspeaker based on the principle of the nonlinear IIR filter which is the nonlinear digital filter for compensating for the nonlinear distortion of the electro-dynamic loudspeaker. By our approach, the multi-dimensional digital filter is obtained as the nonlinear model and its dimension is completely same as the model obtained by the previous study. Moreover, the novel multi-dimensional digital filter can be represented by the simpler equations compared with that of the previous one. Simulation results show that this model can represent the nonlinear characteristics of the electro-dynamic loudspeaker similarly to the nonlinear differential equation model.
Keyword (in Japanese) (See Japanese page) 
(in English) Electro-dynamic loudspeaker / nonlinear IIR filter / model for compensation of nonlinear distortions / equivalent circuit / Volterra filter / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 398, SIP2020-117, pp. 158-163, March 2021.
Paper # SIP2020-117 
Date of Issue 2021-02-24 (EA, SIP, SP) 
ISSN 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 EA2020-86 SIP2020-117 SP2020-51

Conference Information
Committee EA US SP SIP IPSJ-SLP  
Conference Date 2021-03-03 - 2021-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, Ultrasonics, and Related Topics 
Paper Information
Registration To SIP 
Conference Code 2021-03-EA-US-SP-SIP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Nonlinear Modeling of Electro-dynamic Loudspeaker by Nonlinear IIR Filter 
Sub Title (in English)  
Keyword(1) Electro-dynamic loudspeaker  
Keyword(2) nonlinear IIR filter  
Keyword(3) model for compensation of nonlinear distortions  
Keyword(4) equivalent circuit  
Keyword(5) Volterra filter  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kenta Iwai  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Takanobu Nishiura  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2021-03-04 15:45:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # EA2020-86, SIP2020-117, SP2020-51 
Volume (vol) vol.120 
Number (no) no.397(EA), no.398(SIP), no.399(SP) 
Page pp.158-163 
#Pages 6 
Date of Issue 2021-02-24 (EA, SIP, SP) 

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