Blind Directional Room Impulse Response Parameterization from Relative Transfer Functions
Meyer-Kahlen N, Schlecht SJ (2022)
Publication Type: Conference contribution
Publication year: 2022
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: International Workshop on Acoustic Signal Enhancement, IWAENC 2022 - Proceedings
Event location: Bamberg, DEU
ISBN: 9781665468671
DOI: 10.1109/IWAENC53105.2022.9914706
Abstract
Acquiring information about an acoustic environment without conducting dedicated measurements is an important problem of forthcoming augmented reality applications, in which real and virtual sound sources are combined. We propose a straightforward method for estimating directional room impulse responses from running signals. We adaptively identify relative transfer functions between the output of a beam-former pointing into the direction of a single active sound source and the complete set of spherical harmonics domain signals, representing all directions. To this end, estimation is performed with a frequency domain recursive least squares algorithm. Then, parameters such as the directions of arrival of early reflections and the reverberation time are extracted. Estimation of the direct-to-reverberant ratio requires dedicated processing. We show examples of successful estimation from speech signals, based on a simulated and a measured response.
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Finland (FI)How to cite
APA:
Meyer-Kahlen, N., & Schlecht, S.J. (2022). Blind Directional Room Impulse Response Parameterization from Relative Transfer Functions. In International Workshop on Acoustic Signal Enhancement, IWAENC 2022 - Proceedings. Bamberg, DEU: Institute of Electrical and Electronics Engineers Inc..
MLA:
Meyer-Kahlen, Nils, and Sebastian J. Schlecht. "Blind Directional Room Impulse Response Parameterization from Relative Transfer Functions." Proceedings of the 17th International Workshop on Acoustic Signal Enhancement, IWAENC 2022, Bamberg, DEU Institute of Electrical and Electronics Engineers Inc., 2022.
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