Корекція амплітудно-частотної характеристики акустичної системи у реальному часі

Олександр Олександрович Дворник

doi:10.20535/2523-4455.mea.280467

Vol. 28 · Issue 2 · 2023 Jul 13, 2023 Acoustical devices and systems

Real-Time Correction of the Frequency Response of a Public Address System

ОД

Олександр Олександрович Дворник Corresponding Національний технічний університет України "Київський політехнічний інститут імені Ігоря Сікорського" Ukraine

Pages280467.1-280467.6 PublishedJul 13, 2023

PDF (Ukrainian)

VOL 28 · ISS 2 · 2023 To the 125th Anniversary of Igor Sikorsky Kyiv Polytechnic Institute View issue

Abstract

Correcting the public address (PA) system during a concert event is one of the crucial tasks in ensuring acoustic comfort. However, the existing approaches to such correction do not allow for real-time adaptation to changes in the acoustic properties of the venue that occur during the event. To address this limitation, this article proposes the use of a multiband compressor. It is shown that a zero-latency VST plugin can serve as a multiband compressor. Pink noise can be used as a test signal for system calibration. The results of testing the proposed algorithm, conducted through model and real-world experiments, demonstrate the feasibility and effectiveness of the proposed approach.

Keywords

#Multiband compressor #Equalizer #PA-System #Dummy Head #VST-Plugin #Signal correction

References

G. M. Ballou, Ed., Handbook for Sound Engineers. Elsevier, 2008, ISBN: 978-0-240-80969-4.
F. A. Everest and K. Pohlmann, Master Handbook of Acoustics, 7th ed. McGraw Hill TAB, 2022. URL: https://www.accessengineeringlibrary.com/content/book/9781260473599 .
G. Ballou, Ed., Handbook for Sound Engineers, 5th ed. Routledge, 2015, ISBN: 9781135016661, DOI: https://doi.org/10.4324/9780203758281 .
S. Cecchi, A. Carini, and S. Spors, “Room Response Equalization—A Review,” Applied Sciences, vol. 8, no. 1, p. 16, Dec. 2017, DOI: https://doi.org/10.3390/app8010016 .
A. Carini, S. Cecchi, F. Piazza, I. Omiciuolo, and G. L. Sicuranza, “Multiple Position Room Response Equalization in Frequency Do-main,” IEEE Trans Audio Speech Lang Process, vol. 20, no. 1, pp. 122–135, Jan. 2012, DOI: https://doi.org/10.1109/TASL.2011.2158420 .
S. Cecchi, L. Palestini, P. Peretti, L. Romoli, F. Piazza, and A. Carini, “Evaluation of a Multipoint Equalization System Based on Impulse Response Prototype Extraction,” Journal of the Audio Engineering Society, vol. 59, no. 3, pp. 110–123, Mar. 2011, URL: https://www.aes.org/e-lib/online/browse.cfm?elib=15779 .
M. Karjalainen and T. Paatero, “Equalization of Loudspeaker and Room Responses Using Kautz Filters: Direct Least Squares Design,” EURASIP J Adv Signal Process, vol. 2007, no. 1, p. 060949, Dec. 2006, DOI: https://doi.org/10.1155/2007/60949 .
B. Bank, “Direct Design of Parallel Second-Order Filters for Instrument Body Modeling,” in Proceedings of the International Com-puter Music Conference (ICMC), 2017, pp. 458–468, URL: https://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=39413A5E60F9E92F267B8C9F5BF6EF33?doi=10.1.1.151.2937&rep=rep1&type=pdf
B. Bank, “Audio Equalization with Fixed-Pole Parallel Filters: An Efficient Alternative to Complex Smoothing,” JOURNAL OF THE AUDIO ENGINEERING SOCIETY, vol. 61, no. 1/2, pp. 39–49, Mar. 2013, URL: https://www.aes.org/e-lib/browse.cfm?elib=16666 .
V. Bruschi, V. Välimäki, J. Liski, and S. Cecchi, “Linear-Phase Octave Graphic Equalizer,” Journal of the Audio Engineering Society, vol. 70, no. 6, pp. 435–445, Jun. 2022, URL: https://www.aes.org/e-lib/browse.cfm?elib=21794 .
V. Bruschi, V. Välimäki, J. Liski, and S. Cecchi, “A Low-Latency Quasi-Linear-Phase Octave Graphic Equalizer,” in Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22), 2022, pp. 94–100, URL: https://www.dafx.de/paper-archive/2022/papers/DAFx20in22_paper_32.pdf .
C. Hoffman, “Dynamic EQs vs Multiband Compressors,” Black Ghost Audio, 13-Dec-2018. [Online]. Available: https://www.blackghostaudio.com/blog/the-difference-between-dynamic-eqs-and-multiband-compressors .
S. Hosokawa, “Multiband compressor,” US 8,924,220 B2, 30-Dec-2014, URL: https://patentimages.storage.googleapis.com/ae/73/10/224c15c9a44c95/US8924220.pdf .
R. A. Orban, “Audio compressor combining feedback and feedforward sidechain processing,” J Acoust Soc Am, vol. 100, no. 2, p. 688, Aug. 1996, DOI: https://doi.org/10.1121/1.416271 .
B. Owsinski, The Mastering Engineer’s Handbook, 4th ed. Bobby Owsinski Media Group, 2017.
“DriveRack PA2.” [Online]. Available: https://dbxpro.com/en/products/driverack-pa2 .
“FabFilter Pro-MB.” [Online]. Available: https://www.fabfilter.com/products/pro-mb-multiband-compressor-plug-in .
“MultiRack.” [Online]. Available: https://www.waves.com/mixers-racks/multirack .
“Audinate Dante.” [Online]. Available: https://www.audinate.com/ .
“Compression. Fundamentals of audio compression [Kompressiya. Osnovy kompressii zvuka],” aNNiMON (Melnik Software), 06-Nov-2017. [Online]. Available: https://annimon.com/article/2926 .

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1-10 of 133 Next

You may also start an advanced similarity search for this article.

[1] G. M. Ballou, Ed., Handbook for Sound Engineers. Elsevier, 2008, ISBN: 978-0-240-80969-4.

[2] F. A. Everest and K. Pohlmann, Master Handbook of Acoustics, 7th ed. McGraw Hill TAB, 2022. URL: https://www.accessengineeringlibrary.com/content/book/9781260473599 .

[3] G. Ballou, Ed., Handbook for Sound Engineers, 5th ed. Routledge, 2015, ISBN: 9781135016661, DOI: https://doi.org/10.4324/9780203758281 .

[4] S. Cecchi, A. Carini, and S. Spors, “Room Response Equalization—A Review,” Applied Sciences, vol. 8, no. 1, p. 16, Dec. 2017, DOI: https://doi.org/10.3390/app8010016 .

[5] A. Carini, S. Cecchi, F. Piazza, I. Omiciuolo, and G. L. Sicuranza, “Multiple Position Room Response Equalization in Frequency Do-main,” IEEE Trans Audio Speech Lang Process, vol. 20, no. 1, pp. 122–135, Jan. 2012, DOI: https://doi.org/10.1109/TASL.2011.2158420 .

[6] S. Cecchi, L. Palestini, P. Peretti, L. Romoli, F. Piazza, and A. Carini, “Evaluation of a Multipoint Equalization System Based on Impulse Response Prototype Extraction,” Journal of the Audio Engineering Society, vol. 59, no. 3, pp. 110–123, Mar. 2011, URL: https://www.aes.org/e-lib/online/browse.cfm?elib=15779 .

[7] M. Karjalainen and T. Paatero, “Equalization of Loudspeaker and Room Responses Using Kautz Filters: Direct Least Squares Design,” EURASIP J Adv Signal Process, vol. 2007, no. 1, p. 060949, Dec. 2006, DOI: https://doi.org/10.1155/2007/60949 .

[8] B. Bank, “Direct Design of Parallel Second-Order Filters for Instrument Body Modeling,” in Proceedings of the International Com-puter Music Conference (ICMC), 2017, pp. 458–468, URL: https://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=39413A5E60F9E92F267B8C9F5BF6EF33?doi=10.1.1.151.2937&rep=rep1&type=pdf

[9] B. Bank, “Audio Equalization with Fixed-Pole Parallel Filters: An Efficient Alternative to Complex Smoothing,” JOURNAL OF THE AUDIO ENGINEERING SOCIETY, vol. 61, no. 1/2, pp. 39–49, Mar. 2013, URL: https://www.aes.org/e-lib/browse.cfm?elib=16666 .

[10] V. Bruschi, V. Välimäki, J. Liski, and S. Cecchi, “Linear-Phase Octave Graphic Equalizer,” Journal of the Audio Engineering Society, vol. 70, no. 6, pp. 435–445, Jun. 2022, URL: https://www.aes.org/e-lib/browse.cfm?elib=21794 .

[11] V. Bruschi, V. Välimäki, J. Liski, and S. Cecchi, “A Low-Latency Quasi-Linear-Phase Octave Graphic Equalizer,” in Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22), 2022, pp. 94–100, URL: https://www.dafx.de/paper-archive/2022/papers/DAFx20in22_paper_32.pdf .

[12] C. Hoffman, “Dynamic EQs vs Multiband Compressors,” Black Ghost Audio, 13-Dec-2018. [Online]. Available: https://www.blackghostaudio.com/blog/the-difference-between-dynamic-eqs-and-multiband-compressors .

[13] S. Hosokawa, “Multiband compressor,” US 8,924,220 B2, 30-Dec-2014, URL: https://patentimages.storage.googleapis.com/ae/73/10/224c15c9a44c95/US8924220.pdf .

[14] R. A. Orban, “Audio compressor combining feedback and feedforward sidechain processing,” J Acoust Soc Am, vol. 100, no. 2, p. 688, Aug. 1996, DOI: https://doi.org/10.1121/1.416271 .

[15] B. Owsinski, The Mastering Engineer’s Handbook, 4th ed. Bobby Owsinski Media Group, 2017.

[16] “DriveRack PA2.” [Online]. Available: https://dbxpro.com/en/products/driverack-pa2 .

[17] “FabFilter Pro-MB.” [Online]. Available: https://www.fabfilter.com/products/pro-mb-multiband-compressor-plug-in .

[18] “MultiRack.” [Online]. Available: https://www.waves.com/mixers-racks/multirack .

[19] “Audinate Dante.” [Online]. Available: https://www.audinate.com/ .

[20] “Compression. Fundamentals of audio compression [Kompressiya. Osnovy kompressii zvuka],” aNNiMON (Melnik Software), 06-Nov-2017. [Online]. Available: https://annimon.com/article/2926 .

Real-Time Correction of the Frequency Response of a Public Address System

Abstract

Keywords

References

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