Updates on the Real-Time Spherical Array Renderer (ReTiSAR)

• We recently presented ReTiSAR, a framework for binaural rendering of spherical microphone array signals in real-time. The array signals and the employed head-related transfer functions are convolved in the spherical harmonics domain to compute the resulting ear signals and virtually place a listener into the captured sound field. In this contribution, we present the latest additions to the Python software package. These comprise, among others, an interface to the Spatially Oriented Format for Acoustics (SOFA), the ability of switching the spherical harmonics rendering order during runtime as well as performance optimizations enabling real-time rendering up to 12th-order. Furthermore, we integrated enhancements recently proposed in the literature for the upper frequency range where spatial undersampling occurs.

Subject headings

NATURVETENSKAP  -- Data- och informationsvetenskap -- Programvaruteknik (hsv//swe)

NATURAL SCIENCES  -- Computer and Information Sciences -- Software Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)

Keyword

microphone arrays

auralization

signal processing

Python

binaural reproduction

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