I. INTRODUCTION  
II. ACOUSTIC MEASUREMENT  
A. Measurement setup  
B. Measurement time  
C. Directional imprecision due to subject movement  
D. Perceptual performance  
III. NUMERICAL SIMULATION  
A. 3D Geometry Accuracy  
B. Computing time  
C. Perceptual Performance  
IV. INDIRECT INDIVIDUALIZATION BASED ON ANTHROPOMETRIC DATA  
A. Adaptation  
B. Selection  
C. Regression  
V. INDIRECT INDIVIDUALIZATION BASED ON PERCEPTUAL FEEDBACK  
A. Selection  
B. Adaptation  
VI. DISCUSSION  
VII. CONCLUSION