AES Berlin 2017
Paper Session P07
P07 - Spatial Audio—Binaural 3 and Objects
Saturday, May 20, 16:30 — 17:30 (Salon 1 Moscow)
Sascha Spors (Chair)
P07-01 Augmented Reality to Improve Orchestra Conductors’ Headphone Monitoring
Dimitri Soudoplatoff (Presenting Author), Amandine Pras (Author)
Conductors face challenges when conducting the orchestra with headphones to synchronize with a soundtrack or a click track. We sent a survey to 12 international conductors to identify and classify those challenges. They primarily reported on balance issues, aggressive click tracks, and the difficulty of hearing the acoustic sound of the orchestra, leading 70% of them to remove one ear out of the headphones. A solution using augmented reality monitoring through binaural rendering and head tracking was tested in various situations and showed that it could successfully reproduce the acoustic sound of the orchestra into the headphones. Another perceptual experiment evaluated the potential of realism of this solution when merging two binaural auditory scenes recorded in the same acoustic space together. Results encourage us to further develop immersive monitoring systems for conductors, with the soundtrack integrated in the real acoustic space.
Convention Paper 9720
P07-02 Wave Field Synthesis Driving Functions for Large-Scale Sound Reinforcement Using Line Source Arrays
Frank Schultz (Presenting Author), Peter Fiala (Author), Gergely Firtha (Author), Sascha Spors (Author)
Wave field synthesis (WFS) can be used for wavefront shaping using line source arrays (LSAs) in large-scale sound reinforcement. For that the individual drivers might be electronically controlled by WFS driving functions of a virtual directional point source. From the recently introduced unified 2.5D WFS framework it is known that positions of amplitude correct synthesis (PCS) only exist along an arbitrary shaped curve—the reference curve—in front of the LSA. However, its shape can be adapted with the so called referencing function. We introduce the adaption of the referencing function along the audience line of typical concert venues for optimized wavefront shaping. This yields considerable improvements with respect to sound field’s homogeneity and more convenient setups compared to previous WFS-based sound reinforcement.
Convention Paper 9722