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PC-based room correction for audio

Published: 07 October 2015 Publication History

Abstract

The characteristics and implementation of a complete software bundle consisting of a room acoustics measurement tool, an application for the calculation of the room correction filters and a plugin for real time audio filtering is described. Via this plug-in a non-experienced user should be able to follow the documentation, measure the impulse response of his listening room, calculate the appropriate stereo inverse filters and utilize them in order to equalize the audio input in real time. The proposed room equalization solution was evaluated in terms of subjective and objective performance.

References

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Hatziantoniou, P. D., & Mourjopoulos, J. N. (2000). Generalized fractional-octave smoothing of audio and acoustic responses. Journal of the Audio Engineering Society, 48(4), 259--280.
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S. T. Neely and J. B. Allen (1979). Invertibility of a Room Impulse Response. J. Acoust. Soc. Am., vol. 66, 165--169
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J. Mourjopoulos, P. M. Clarkson, and J. K. Hammond (1982). A Comparative Study of Least-Squares and Homomorphic Techniques for the Inversion of Mixed-Phase Signals. Proc. IEEE ICASSP'82 1858--1861.
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Hatziantoniou, P. D., & Mourjopoulos, J. N. (2004). Errors in real-time room acoustics dereverberation. Journal of the Audio Engineering Society, 52(9), 883--899.
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A. Papoulis, Signal Analysis, McGraw-Hill, New York, 1977
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Schroeder, M. R. (1965). New method of measuring reverberation time. The Journal of the Acoustical Society of America, 37(3), 409--412.
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Karjalainen, M., Paatero, T., Mourjopoulos, J. N., & Hatziantoniou, P. D. (2005, October). About room response equalization and dereverberation. In Applications of Signal Processing to Audio and Acoustics, 2005. IEEE Workshop on (pp. 183--186). IEEE.
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Hatziantoniou, P., Mourjopoulos, J., & Worley, J. (2005, May). Subjective assessments of real-time room dereverberation and loudspeaker equalization. In Audio Engineering Society Convention 118. Audio Engineering Society.
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Matti Karjalainen and Tuomas Paatero. Equalization of loudspeaker and room responses using Kautz filters: Direct least squares design. EURASIP J. on Advances in Sign. Proc., Spec. Iss. on Spatial Sound and Virtual Acoustics, 2007:13, 2007. Article ID 60949.
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Brännmark, L. J., & Ahléén, A. (2008, March). Robust loudspeaker equalization based on position-independent excess phase modeling. In Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on (pp. 385--388). IEEE.
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Bank, B., & Ramos, G. (2011). Improved Pole Positioning for Parallel Filters Based on Spectral Smoothing and Multiband Warping. Signal Processing Letters, IEEE, 18(5), 299--302.
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Bank, B. (2013, August). Loudspeaker and room equalization using parallel filters: Comparison of pole positioning strategies. In Proc. AES 51st Int. Conf.
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Everest, F. A., & Pohlmann, K. C. (2001). The master handbook of acoustics (Vol. 4). New York: McGraw-Hill.
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cover image ACM Other conferences
AM '15: Proceedings of the Audio Mostly 2015 on Interaction With Sound
October 2015
250 pages
ISBN:9781450338967
DOI:10.1145/2814895
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 07 October 2015

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Author Tags

  1. Room correction
  2. acoustics
  3. measurement
  4. plugin
  5. software

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  • Research-article
  • Research
  • Refereed limited

Funding Sources

  • Hellenic Funds & European Regional Development Fund (ERDF)

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AM '15
AM '15: Audio Mostly 2015
October 7 - 9, 2015
Thessaloniki, Greece

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Overall Acceptance Rate 54 of 77 submissions, 70%

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