| Presentation | 2021-03-04 Nonlinear Modeling of Electro-dynamic Loudspeaker by Nonlinear IIR Filter Kenta Iwai, Takanobu Nishiura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Electro-dynamic loudspeaker / nonlinear IIR filter / model for compensation of nonlinear distortions / equivalent circuit / Volterra filter |
| Paper # | EA2020-86,SIP2020-117,SP2020-51 |
| Date of Issue | 2021-02-24 (EA, SIP, SP) |
| Conference Information | |
| Committee | EA / US / SP / SIP / IPSJ-SLP |
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| Conference Date | 2021/3/3(2days) |
| 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 |
| Chair | Kenichi Furuya(Oita Univ.) / Hikaru Miura(Nihon Univ.) / Hisashi Kawai(NICT) / Kazunori Hayashi(Kyoto Univ.) / 北岡 教英(豊橋技科大) |
| Vice Chair | Yoshinobu Kajikawa(Kansai Univ.) / Kentaro Matsui(NHK) / Jun Kondo(Shizuoka Univ.) / Yoshikazu Koike(Shibaura Inst. of Tech.) / / Yukihiro Bandou(NTT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) |
| Secretary | Yoshinobu Kajikawa(Univ. of Tokyo) / Kentaro Matsui(NTT) / Jun Kondo(Doshisha Univ.) / Yoshikazu Koike(Tohoku Univ.) / (Univ. of Tokyo) / Yukihiro Bandou(Waseda Univ.) / Toshihisa Tanaka(Hosei Univ.) / (Waseda Univ.) |
| Assistant | Yukou Wakabayashi(Tokyo Metropolitan Univ.) / Tatsuya Komatsu(LINE) / Shinnosuke Hirata(Tokyo Inst. of Tech.) / Yusuke Ijima(NTT) / Yuichi Tanaka(Tokyo Univ. Agri.&Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Technical Committee on Ultrasonics / Technical Committee on Speech / Technical Committee on Signal Processing / Special Interest Group on Spoken Language Processing |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2021-03-04 |
| Paper # | EA2020-86,SIP2020-117,SP2020-51 |
| Volume (vol) | vol.120 |
| Number (no) | EA-397,SIP-398,SP-399 |
| Page | pp.pp.158-163(EA), pp.158-163(SIP), pp.158-163(SP), |
| #Pages | 6 |
| Date of Issue | 2021-02-24 (EA, SIP, SP) |