Comparison of different interpolation methods for the interpolation of head-related transfer functions
1) Klaus Hartung, 1) Jonas Braasch, 2) Susanne J. Sterbing
Ruhr University, Bochum
Dept. of Zoology and Neurobiology
Different methods for the interpolation
of head-related transfer functions (HRTFs) were compared. Time
domain representations (FIR coefficients) and frequency domain
representations (discrete Fourier transform of the impulse
response) of an HRTF catalogue were interpolated with the
inverse-distance weighting method and the spherical spline method.
The interpolated transfer functions were either compared with
regard to numerical errors or to differences in perceived quality.
In general the errors seem to be larger for time domain
representations. Best results were achieved with spherical spline
interpolation in the frequency domain.
Last modified: 12.03.1999 firstname.lastname@example.org