The Role of Modal Excitation in Colorless Reverberation

Heldmann J, Schlecht SJ (2021)

Publication Type: Conference contribution

Publication year: 2021

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 206-213

Conference Proceedings Title: Proceedings of the 24th International Conference on Digital Audio Effects, DAFx 2021

Event location: Vienna, AUT

ISBN: 9783200083783

DOI: 10.23919/DAFx51585.2021.9768217

Abstract

A perceptual study revealing a novel connection between modal properties of feedback delay networks (FDNs) and colorless reverberation is presented. The coloration of the reverberation tail is quantified by the modal excitation distribution derived from the modal decomposition of the FDN. A homogeneously decaying allpass FDN is designed to be colorless such that the corresponding narrow modal excitation distribution leads to a high perceived modal density. Synthetic modal excitation distributions are generated to match modal excitations of FDNs. Three listening tests were conducted to demonstrate the correlation between the modal excitation distribution and the perceived degree of coloration. A fourth test shows a significant reduction of coloration by the colorless FDN compared to other FDN designs. The novel connection of modal excitation, allpass FDNs, and perceived coloration presents a beneficial design criterion for colorless artificial reverberation.

Authors with CRIS profile

Sebastian Schlecht

Involved external institutions

Aalto University Espoo FI Finland (FI)

How to cite

APA:

Heldmann, J., & Schlecht, S.J. (2021). The Role of Modal Excitation in Colorless Reverberation. In Proceedings of the 24th International Conference on Digital Audio Effects, DAFx 2021 (pp. 206-213). Vienna, AUT: Institute of Electrical and Electronics Engineers Inc..

MLA:

Heldmann, Janis, and Sebastian J. Schlecht. "The Role of Modal Excitation in Colorless Reverberation." Proceedings of the 24th International Conference on Digital Audio Effects, DAFx 2021, Vienna, AUT Institute of Electrical and Electronics Engineers Inc., 2021. 206-213.

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