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Abstract
This paper proposes a low-latency quasi-linear-phase octave graphic equalizer. The structure is derived from a recent linear-phase graphic equalizer based on interpolated finite impulse response (IFIR) filters. The proposed system reduces the total latency of the previous equalizer by implementing a hybrid structure. An infinite impulse response (IIR) shelving filter is used in the structure to implement the first band of the equalizer, whereas the rest of the band filters are realized with the linear-phase FIR structure. The introduction of the IIR filter causes a nonlinear phase response in the low frequencies, but the total latency is reduced by 50% in comparison to the linear-phase equalizer. The proposed graphic equalizer is useful in real-time audio processing, where only little latency is tolerated.
Original language | English |
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Title of host publication | Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22) |
Editors | Gianpaolo Evangelista, Nicki Holighaus |
Place of Publication | Vienna, Austria |
Publisher | DAFx |
Pages | 94-100 |
Number of pages | 7 |
Edition | 2022 |
ISBN (Print) | 978-3-200-08599-2 |
Publication status | Published - 6 Sep 2022 |
MoE publication type | A4 Article in a conference publication |
Event | International Conference on Digital Audio Effects - University of Music and Performing Arts Vienna, Vienna, Austria Duration: 7 Sep 2022 → 9 Sep 2022 Conference number: 25 https://dafx2020.mdw.ac.at/DAFx20in22/ https://dafx2020.mdw.ac.at/DAFx20in22/index.html |
Publication series
Name | Proceedings of the International Conference on Digital Audio Effects |
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ISSN (Print) | 2413-6700 |
ISSN (Electronic) | 2413-6689 |
Conference
Conference | International Conference on Digital Audio Effects |
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Abbreviated title | DAFx |
Country/Territory | Austria |
City | Vienna |
Period | 07/09/2022 → 09/09/2022 |
Internet address |
Keywords
- Audio signal processing
- Digital signal processing
- equalization
- filter design
Fingerprint
Dive into the research topics of 'A Low-Latency Quasi-Linear-Phase Octave Graphic Equalizer'. Together they form a unique fingerprint.Projects
- 1 Active
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NordicSMC: Nordic Sound and Music Computing Network
Välimäki, V., Louise, B., Mikkonen, O., Prawda, K., Roberts, J. & Fagerström, J.
01/01/2018 → 31/12/2023
Project: Other external funding: Other foreign funding
Equipment
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Aalto Acoustics Lab
Ville Pulkki (Manager)
School of Electrical EngineeringFacility/equipment: Facility
Activities
- 1 Hosting an academic visitor
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Valeria Bruschi
Vesa Välimäki (Host) & Juho Liski (Host)
13 Sep 2021 → 17 Dec 2021Activity: Hosting a visitor types › Hosting an academic visitor