Presentation 2009-01-29
An Evaluation of Linearization Methods for Loudspeaker Systems Using Dynamic Distortion Method
Shoichi KITAGAWA, Yoshinobu KAJIKAWA,
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Abstract(in English) In this paper, we demonstrate the compensation effect of the nonlinear distortions for the loudspeaker system using the dynamic distortion method. In order to compensate the nonlinear distortions, it is necessary to design the linearization system using the Volterra filter or the Mirror filter which uses the motion equation of the loudspeaker system related to the nonlinear distortions. The swept sine wave is usually used for the verification of the compensation effect of the nonlinear distortions. However, the evaluation result is not always corresponding to the actual situations because the input signals to loudspeaker systems are a wideband signal like music and voice signals. Hence, we have used the dynamic distortion method using the white noise and examined the compensation effect considering up to the 2^-order nonlinear distorion. In this paper, we examine the compensation effect using the linearization system considering up to the 3^-order nonlinear distorion and the Mirror filter.
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Keyword(in English) loudspeaker system / dynamic distortion method / Volterra filter / Mirror filter / nonlinear distortion
Paper # EA2008-119
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Committee EA
Conference Date 2009/1/22(1days)
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Registration To Engineering Acoustics (EA)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Evaluation of Linearization Methods for Loudspeaker Systems Using Dynamic Distortion Method
Sub Title (in English)
Keyword(1) loudspeaker system
Keyword(2) dynamic distortion method
Keyword(3) Volterra filter
Keyword(4) Mirror filter
Keyword(5) nonlinear distortion
1st Author's Name Shoichi KITAGAWA
1st Author's Affiliation Faculty of Engineering Science, Kansai University()
2nd Author's Name Yoshinobu KAJIKAWA
2nd Author's Affiliation Faculty of Engineering Science, Kansai University
Date 2009-01-29
Paper # EA2008-119
Volume (vol) vol.108
Number (no) 411
Page pp.pp.-
#Pages 6
Date of Issue