An adjusted-q digital graphic equalizer employing opposite filters

  • Authors:

  • Yonghee Lee;Rinchul Kim;Googchun Cho;Seong Jong Choi

  • Affiliations:

  • Mobile Multimedia Lab., LG Electronics Institute of Tech., Seoul, Korea;Dept. of Electrical and Computer Eng., University of Seoul, Seoul, Korea;DigitalandAnalog, Co. LTD., KyungKi, Korea;Dept. of Electrical and Computer Eng., University of Seoul, Seoul, Korea

  • Venue:
  • PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
  • Year:
  • 2005

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Abstract

This paper proposes an adjusted-Q digital graphic equalizer employing the opposite filters. A method for designing the proposed equalizer is also presented. In the proposed adjusted–Q equalizer, we adjust the Q-factor of the equalizer filter depending on the gain, yielding an improved equalizer performance. Also, by increasing the Q-factor of the opposite filters gracefully with increasing gain, the inter-band interference can be reduced effectively in all frequency range in consideration. We shall show that the proposed equalizer can reproduce the user's gain setting faithfully.