Papers for

acoustic device developers

Papers whose findings have a practical use for this group, as judged from the abstract. Open a paper to read what it means in practice.

Improving sound field analysis with multiscale sparse wave methods

Multiscale Generalized Sparse Plane Wave Decomposition in the Spherical Harmonic Domain

Abstract: Sparse plane wave decomposition (SPWD) is a physics-driven model-based approach for analyzing sound fields that is suitable for real-time operation. SPWD is used in different contexts such as direction of arrival (DOA) estimation and sound field separation. SPWD employs spherical Dirichlet kernels to decompose sound fields represented as steered response maps into a finite number of plane waves using sparse recovery techniques. This article proposes a multiscale generalized sparse plane wave decomposition approach that uses an optimal spherical kernel and a multiscale sparse decomposition method to improve recovery performance. The utility of the proposed approach is shown by comparisons with the original SPWD approach via extensive numerical simulations.

Thu 15 OctSound

The gist

Understanding how sound travels and where it comes from is important for many audio technologies. The authors improved a method called sparse plane wave decomposition, which breaks down complex sound fields into simpler parts for easier analysis. They introduced a way to do this at multiple scales using a better mathematical tool called an optimal spherical kernel. Their new approach helps recover sound features more accurately and quickly, as shown in computer simulations.

Open → 2610.21425v1