Treble Auralizer: a real time Web Audio Engine enabling 3DoF auralization of simulated room acoustics designs

We present with this paper an original system designed to experience spatial impulse responses generated by our acoustic simulation framework directly on the web. The user can set the simulation parameters (source-receiver positions, materials, simulation settings) and visualize the simulation results in the web application. Once the simulation data is obtained, the user can experience in 3DoF the dynamic binaural rendering of the Second Order Ambisonics Room Impulse Responses (SOA-RIRs) for each source-receiver pair, individually or with multiple sources at once. The original anechoic tracks from the database provided are convolved in real time with the SOA-RIRs and the source levels can be adjusted to create accurate soundscapes representing the acoustic design scenarios. The user can switch seamlessly between receiver positions and compare simulation results from different geometries or material configurations. In this paper we describe the system details and its technical limitations. Finally, we discuss its application for the acoustic engineering field, where perceptually comparing results from different room acoustic solutions can support the analysis of numerical or graphical reports, and thus shorten the time needed to find optimal design solutions.