Perceptual Evaluation of Spatial Resolution in Directivity Patterns
* Presenting author
The perceptual evaluation of differences in measured directivity of sound sources in regard to spatial resolution is still an on-going research. Although high-resolution measurement setups and data exist, less expensive measurements with lower resolution and lower number of microphones may already ensure plausible perceptual reproduction in a virtual environment. It is yet not clear how detailed the directivity information has to be captured and reproduced for plausible playback.This paper approaches the question by a listening experiment in a virtual environment with generic directivity patterns. The experiment compares different spatial resolutions (spherical harmonic orders) of the directivity patterns for various virtual listening positions and source signals. The virtual environment employs a higher-order image source model and binaural, dynamic Ambisonic playback.