Head-related transfer functions (HRTFs) were acoustically measured and numerically simulated for the FABIAN head and torso simulator on a full-spherical and high resolution sampling grid. Moreover, HRTFs were acquired for 11 horizontal head-above-torso orientations, covering the typical range of motion of ±50• , making it possible to account for head movements of the listeners in dynamic binaural auralizations in a physically correct manner. In lack of an external reference for HRTFs, measured and simulated data sets were cross-validated by applying auditory models for localization performance and spectral coloration and by correlation analyses. The results indicate a high degree of similarity between the two data sets regarding all tested aspects, thus suggesting that they are free of systematic errors. The HRTF database is publicly available from https://doi.org/10.14279/depositonce-5718.2 and is accompanied by a wide range of headphone filters for use in binaural synthesis.

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The significance of taking into account non-locally reacting behavior of boundaries compared to the often-used locally reacting assumption in room acoustics has not been extensively investigated. To make this possible a boundary element method is developed, inspired on a seismic simulation method known as the WRW method. The novelty of this method compared to other boundary element methods (BEM) is that the calculation is performed in only one domain. There is no need for a fluid-structure coupling, which in general allows faster simulation times. The theory of the method is presented and some example structures are simulated with both locally and non-locally reacting behavior. The results are shown and discussed.

As an alternative for the common geometric room acoustical models, a wave theory-based model has been developed derived from the so-called WRW scheme, often used in seismic modelling [1, 2]. In this model, the wave properties of sound are appropriately taken into account. The proposed model is similar to the Boundary Element Method (BEM). Other than in BEM, in the WRW scheme non-locally reacting room boundaries can be included in the modelling process using only the fluid domain. The results of sound field modelling in rooms with locally as well as non-locally reacting boundaries are presented. The differences are analysed and their relevance is discussed.