Combined inverse filtering and feedback control for robust equalization and distortion reduction in loudspeaker systems

Yusuke Kadowaki, Toshiya Samejima

Research output: Contribution to conferencePaperpeer-review

Abstract

A method for the robust equalization and distortion reduction of loudspeakers is proposed. The proposed method adopts both an infinite impulse response (IIR) inverse filter and a feedback controller. The feedback controller based on model-following control theory is used to force a loudspeaker to move as a linear time-invariant (LTI) system. Accordingly, we expect the inverse filter that is specifically designed for the LTI system to work correctly. Furthermore, nonlinear distortion of a loudspeaker is expected to be reduced. Computer simulation shows that the proposed method achieves more robust equalization of a loudspeaker than inverse filtering alone. In addition, the proposed method simultaneously reduces nonlinear distortion of the loudspeaker.

Original languageEnglish
Publication statusPublished - Jan 1 2016
Event141st Audio Engineering Society International Convention 2016, AES 2016 - Los Angeles, United States
Duration: Sep 29 2016Oct 2 2016

Other

Other141st Audio Engineering Society International Convention 2016, AES 2016
Country/TerritoryUnited States
CityLos Angeles
Period9/29/1610/2/16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Modelling and Simulation
  • Acoustics and Ultrasonics

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