Title :
Spatial frequency response surfaces: an alternative visualization tool for head-related transfer functions (HRTFs)
Author :
Cheng, C.I. ; Wakefield, Gregory H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
This paper presents an alternative visualization tool for head-related transfer functions (HRTFs) which represents HRTF data sets as magnitude spatial frequency response surfaces. Qualitative analysis of HRTF data is easier in the spatial domain than in the magnitude frequency domain and allows quick comparisons between different subjects´ HRTF sets. In addition, these surfaces exhibit many well-known HRTF-related psychophysical phenomena due to head, torso, and pinna filtering. Finally, these surfaces suggest an interpolation algorithm by which directional transfer functions (DTFs) corresponding to arbitrary spatial locations can be computed from existing DTF measurements at known locations
Keywords :
acoustic signal processing; data visualisation; filtering theory; frequency response; hearing; interpolation; transfer functions; DTF measurements; HRTF data; acoustic filtering; directional hearing; directional transfer functions; head filtering; head-related transfer functions; interpolation algorithm; magnitude frequency domain; pinna filtering; psychophysical phenomena; spatial domain; spatial frequency response surfaces; spatial locations; torso filtering; visualization tool; Data analysis; Data visualization; Filtering; Frequency domain analysis; Frequency response; Interpolation; Psychology; Response surface methodology; Torso; Transfer functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.759854
