Contribution
Validation study of broadband wave-based acoustic simulations and binaural renderings
* Presenting author
Abstract:
In previous publications we presented a broadband wave-based acoustics simulation framework to estimate spatial room impulse responses with high accuracy. In this paper we build further on this framework and extend the range to an even higher frequency. In addition, we add the effect of air absorption which is essential when covering the full 8kHz octave band. Just as in previous paper we encode the sound field into spherical harmonics by using an array of receivers, extending the order up 32 in order to cover full range up 12kHz. Afterwards a high accuracy binaural rendering is achieved by using a measured anechoic HRTF. This method is validated against measurements in two room configurations, firstly an empty room and secondly in the same room filled with complex ridged objects. Both configurations show an outstanding agreement between simulated and measured responses. This opens up for usable applications such as rendering complex audio devices, including head worn, in various acoustic scenarios for early testing and prototyping.