Article
Position- and subject-dependent differences in binaural direct-to-reverberant energy ratio (en)
* Presenting author
Abstract:
The direct-to-reverberant ratio (DRR) plays a crucial role in the perception of acoustic environments. It depends on the acoustic properties of the room and the distance between source and receiver. DRR is usually calculated from omnidirectional room impulse responses, yet in dynamic binaural rendering systems, it is often necessary to compute the DRR from binaural room impulse responses. This paper investigates the role of the relative source-listener position when making such computations. Due to head and pinna effects, the location of the sound source is shown here to affect the calculated DRR significantly. Furthermore, a correction is then proposed for DRR values calculated using measurements with a rear-incident source position. Moreover, the paper evaluates the differences in DRR when computed from binaural measurements of different subjects and artificial heads, which could have potential implications for practical applications of immersive audio.