Reflector and Occluder

William L. Martens and Jens Herder. Perceptual criteria for eliminating reflectors and occluders from the rendering of environmental sound,

137th Meeting of the Acoustical Society of America and the 2nd Convention of the European Acoustics Association, Berlin, March 1999.

William L. Martens, Jens Herder, and Yoshiki Shiba. A filtering model for efficient rendering of the spatial image of an occluded virtual sound source,

137th Meeting of the Acoustical Society of America and the 2nd Convention of the European Acoustics Association, Berlin, March 1999.

Demonstration

Recorded Reflector [quicktime] (7 MB)

Exocentric view. The sound were recorded at an anechoic chamber with distances of 1 m from the wooden board (90 x 40 cm) to loudspeaker and microphone.

Recorded Occluder [quicktime] (7 MB)

Exocentric view. The sound were recorded at an anechoic chamber with distances of 1 m from the wooden board (90 x 40 cm) to loudspeaker and microphone.

Simulated Obstruction [quicktime] (9 MB)

Egocentric view. At the beginning, the sound source is hidden by the wooden board. Until the source arrives at 45 degrees the simulation uses the occluder mode, after that it switches into the reflector mode. The filter functions are exaggerating intensionally the effect of occlusion and reflection compared to the reference measurements.

Simulated Obstruction [quicktime] (7 MB)

The video clip shows the same configuration as above, but in an exocentric view.

Last modified: 10/30/23; Contact: ; Copyright © 2023, Jens Herder, All Rights Reserved.