A Study on Head Shape Simplification Using Spherical Harmonics for HRTF Computation at Low Frequencies

Tao Y, Tew AI, Porter SJ. A Study on Head Shape Simplification Using Spherical Harmonics for HRTF Computation at Low Frequencies. In: AES Convention 114. Audio Engineering Society; 2003. Paper 5787. Available from: https://aes.org/publications/elibrary-page/?id=12498

@inproceedings{Tao2003_12498,
  author = {Tao, Yufei and Tew, Anthony I. and Porter, Stuart J.},
  title = {{A Study on Head Shape Simplification Using Spherical Harmonics for HRTF Computation at Low Frequencies}},
  booktitle = {AES Convention 114},
  note = {Paper 5787},
  year = {2003},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12498}
}

TY  - CPAPER
TI  - A Study on Head Shape Simplification Using Spherical Harmonics for HRTF Computation at Low Frequencies
AU  - Tao, Yufei
AU  - Tew, Anthony I.
AU  - Porter, Stuart J.
T2  - AES Convention 114
M1  - Paper 5787
PY  - 2003
DA  - 2003/03/06
UR  - https://aes.org/publications/elibrary-page/?id=12498
PB  - Audio Engineering Society
LA  - en
AB  - Simplified head shapes, such as spheres and ellipsoids have been applied in the research of head-related transfer functions (HRTFs). However, the effects of the missing head shape features in the simplified head models have not been thoroughly examined. In this paper, head shapes are represented using spherical harmonics, which allows shape simplifications to be carried out in a controlled and systematic way. The KEMAR head shape was lowpassed to different degrees and the errors in both the head shape and acoustic pressures introduced by the lowpass filters were studied. The influence on the HRTFs of head shape features remote from the ears, with particular reference to the nose, are discussed.
ER  -