Abstract
Artificial reverberation algorithms often suffer from spectral coloration, usually in the form of metallic ringing, which impairs the perceived quality of sound. This paper proposes a method to reduce the coloration in the feedback delay network (FDN), a popular artificial reverberation algorithm. An optimization framework is employed entailing a differentiable FDN to learn a set of parameters decreasing coloration. The optimization objective is to minimize the spectral loss to obtain a flat magnitude response, with an additional temporal loss term to control the sparseness of the impulse response. The objective evaluation of the method shows a favorable narrower distribution of modal excitation while retaining the impulse response density. The subjective evaluation demonstrates that the proposed method lowers perceptual coloration of late reverberation, and also shows that the suggested optimization improves sound quality for small FDN sizes. The method proposed in this work constitutes an improvement in the design of accurate and high-quality artificial reverberation, simultaneously offering computational savings.
Original language | English |
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Title of host publication | Proceedings of the 26th International Conference on Digital Audio Effects (DAFx23) |
Editors | Federico Fontana, Silvin Willemsen |
Place of Publication | Copenhagen, Denmark |
Publisher | Aalborg University |
Pages | 244-251 |
Number of pages | 8 |
Publication status | Published - 4 Sept 2023 |
MoE publication type | A4 Conference publication |
Event | International Conference on Digital Audio Effects - Aalborg University Copenhagen, Copenhagen, Denmark Duration: 4 Sept 2023 → 7 Sept 2023 Conference number: 26 https://dafx23.create.aau.dk/ |
Publication series
Name | Proceedings of Audio Effects Conference |
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Publisher | Aalborg University Copenhagen |
ISSN (Electronic) | 2413-6689 |
Conference
Conference | International Conference on Digital Audio Effects |
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Abbreviated title | DAFx |
Country/Territory | Denmark |
City | Copenhagen |
Period | 04/09/2023 → 07/09/2023 |
Internet address |
Keywords
- Audio Signal Processing
- Audio Effects
- Reverb Algorithm
- Feedback Delay Network
- Artificial Reverberation
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Prizes
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Best Paper Award of the DAFx-23 Conference
Dal Santo, G. (Recipient), Prawda, K. (Recipient), Schlecht, S. (Recipient) & Välimäki, V. (Recipient), 7 Sept 2023
Prize: Award or honor granted for a specific work