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http://dx.doi.org/10.7776/ASK.2009.28.1.051

Effective Room Equalization Using Warped Common Acoustical Pole and Zero  

Lee, Jun-Ho (연세대학교 전기전자공학과)
Park, Young-Cheol (연세대학교 원주캠퍼스 정보기술학부)
Youn, Dae-Hee (연세대학교 전기전자공학과)
Lee, Seok-Pil (전자부품연구원(KETI) 디지털미디어 연구센터)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.1, 2009 , pp. 51-60 More about this Journal
Abstract
This paper presents a new method of designing room equalization filters using a warped common acoustical pole and zero (WCAPZ) modeling. The proposed method is capable of significantly reducing the order of the equalization filters without sacrificing the filter performance, especially, at low frequencies. Thus, the associated input-output delay is much smaller than the conventional block transform method while its computational complexity is comparable to it. The computational complexity also is still comparable to the conventional room equalization method, since the filter is implemented in the linear frequency domain after the pole-zero dewarping. Simulation results confirm that the use of the proposed algorithm significantly improves the room equalization over a range of low frequencies.
Keywords
Room equalization; Warping; Common acoustical pole and zero;
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