Publications-Detail
Visualization of Linear Operations in the Spherical Harmonics Domain
- Authors:
- Kentgens, M. , Jax, P.
- Book Title:
- International Conference on Immersive and 3D Audio (I3DA)
- Organization:
- University of Bologna
- Date:
- Sep. 2021
- DOI:
- 10.1109/I3DA48870.2021.9610968
- Language:
- English
Abstract
Linear operations on coefficients in the spherical harmonics (SH) transform domain which again yield SH-domain coefficients are an important toolset in many disciplines of research and engineering. They comprise rotations, spatially selective filters, and many other modifications for various applications, or describe a MIMO system's response to an excitation. It is of particular importance to characterize these operations both qualitatively and quantitatively, and make them accessible for people to work with. In this paper, we identify different key properties of such operations and propose a method for their visualization. With our proposed method, we succeed to show many important aspects of an operation in a single plot and give rise to a comprehensive interpretation of a system's behavior. In our evaluation, we show the potential of the proposed method on the basis of various practical examples from spatial audio signal processing, where SH-domain filtering is used to modify acoustic scenes given by higher-order Ambisonics signals.Pre-print available on arXiv at https://arxiv.org/abs/2104.13069
Download
BibTeX- Copyright © by IKS
kentgens21a.pdf - This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.