Binaural receiver models for finite element room acoustic simulations



Akustische Virtuelle Realität,


During the past years, hybrid acoustic simulation methods have been established that use the finite element method (FEM) to simulate the lower frequency range of room transfer functions (RTFs). An important aspect of these simulations are binaural receivers that allow perceiving sound from different directions. In FEM, this can be achieved including a geometry of e.g. an artificial head in the scene. Since at lower frequencies finer details of this geometry do not affect the wave-field while increasing the computational effort, a simplification of this geometry seems reasonable. Thus, in a previous study, multiple simplified models have been compared to a dummy head geometry under free field conditions and indicators for valid frequency ranges have been found. Now, these models are to be investigated under the presence of a room. For this purpose, they are to be embedded into finite element simulations using different room geometries. Then, the performance of these models – regarding accuracy of the results and computational effort – is to be investigated in respect to the simulated frequency range. Requirements  Basic knowledge of binaural hearing  Understanding of acoustic fundamentals  Working self-reliantly  Interest in acoustics Optional skills  Knowledge of FEM  Basic Matlab skills