Spatial Acoustics Library for MATLAB (SALM): A Computational Toolkit for Spatial Audio Processing

Salvador C.D.; Treviño J.; Sakamoto S. · 2025 Immersive and 3D Audio: from Architecture to Automotive, I3DA 2025 (2025) · DOI: 10.1109/i3da65421.2025.11202099

Resumen

The Spatial Acoustics Library for MATLAB (SALM) is a computational toolkit for efficient spatial audio signal processing. Its principal contribution is providing a unified and extensible framework that integrates Fourier transform techniques for spatial filtering. A defining characteristic of SALM is its ability to seamlessly handle both fundamental tasks, such as visualizing spherical harmonic functions, and advanced applications, including array processing in the circular and spherical Fourier transform domains. Key use cases include spatial interpolation of head-related transfer functions and room impulse responses, essential for high-fidelity spatial sound reproduction. Rigorously tested and validated in previous publications by the authors, SALM has demonstrated its reliability for immersive acoustic research and prototyping. By equipping researchers and developers with a structured and versatile library, SALM advances spatial acoustics with applications in binaural rendering for virtual reality and sound field analysis for architectural acoustics.