%0 Conference Paper
%B IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2009. WASPAA '09
%D 2009
%T Regularized HRTF fitting using spherical harmonics
%A Zotkin,Dmitry N
%A Duraiswami, Ramani
%A Gumerov, Nail A.
%K Acoustic applications
%K acoustic field
%K Acoustic fields
%K acoustic intensity measurement
%K Acoustic measurements
%K acoustic signal processing
%K Acoustic testing
%K acoustic waves
%K array signal processing
%K audio acoustics
%K circular arrays
%K computational analysis
%K Ear
%K ear location
%K head-related transfer function
%K Helmholtz reciprocity principle
%K HRTF
%K HRTF fitting
%K Loudspeakers
%K Microphones
%K Position measurement
%K signal reconstruction
%K spatial audio
%K spectral reconstruction
%K spherical harmonics
%K Transfer functions
%X By the Helmholtz reciprocity principle, the head-related transfer function (HRTF) is equivalent to an acoustic field created by a transmitter placed at the ear location. Therefore, it can be represented as a spherical harmonics spectrum - a weighted sum of spherical harmonics. Such representations are useful in theoretical and computational analysis. Many different (often severely undersampled) grids are used for HRTF measurement, making the spectral reconstruction difficult. In this paper, two methods of obtaining the spectrum are presented and analyzed both on synthetic (ground-truth data available) and real HRTF measurements.
%B IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2009. WASPAA '09
%I IEEE
%P 257 - 260
%8 2009/10//
%@ 978-1-4244-3678-1
%G eng
%R 10.1109/ASPAA.2009.5346521
%0 Journal Article
%J IEEE Transactions on Multimedia
%D 2004
%T Rendering localized spatial audio in a virtual auditory space
%A Zotkin,Dmitry N
%A Duraiswami, Ramani
%A Davis, Larry S.
%K -D audio processing
%K 3-D audio processing
%K Audio databases
%K audio signal processing
%K audio user interfaces
%K augmented reality
%K data sonification
%K Digital signal processing
%K head related transfer functions
%K head-related transfer function
%K Interpolation
%K Layout
%K perceptual user interfaces
%K Real time systems
%K Rendering (computer graphics)
%K Scattering
%K spatial audio
%K Transfer functions
%K User interfaces
%K virtual audio scene rendering
%K virtual auditory spaces
%K virtual environments
%K Virtual reality
%K virtual reality environments
%X High-quality virtual audio scene rendering is required for emerging virtual and augmented reality applications, perceptual user interfaces, and sonification of data. We describe algorithms for creation of virtual auditory spaces by rendering cues that arise from anatomical scattering, environmental scattering, and dynamical effects. We use a novel way of personalizing the head related transfer functions (HRTFs) from a database, based on anatomical measurements. Details of algorithms for HRTF interpolation, room impulse response creation, HRTF selection from a database, and audio scene presentation are presented. Our system runs in real time on an office PC without specialized DSP hardware.
%B IEEE Transactions on Multimedia
%V 6
%P 553 - 564
%8 2004/08//
%@ 1520-9210
%G eng
%N 4
%R 10.1109/TMM.2004.827516
%0 Conference Paper
%B 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01)
%D 2001
%T Modeling the effect of a nearby boundary on the HRTF
%A Gumerov, Nail A.
%A Duraiswami, Ramani
%K Acoustic scattering
%K acoustic signal processing
%K acoustic wave reflection
%K acoustic wave scattering
%K architectural acoustics
%K audio signal processing
%K Biological system modeling
%K boundary effect modeling
%K Computer interfaces
%K Ear
%K Educational institutions
%K Frequency
%K Head related transfer function
%K HRTF
%K HUMANS
%K infinite plane
%K Laboratories
%K Nails
%K Raman scattering
%K rigid surface
%K room environment
%K sound pressure level
%K sound scattering
%K spatial audio
%K sphere
%K spherical model
%K Transfer functions
%K wall influence
%X Understanding and simplified modeling of the head related transfer function (HRTF) holds the key to many applications in spatial audio. We develop an analytical solution to the problem of scattering of sound from a sphere in the vicinity of an infinite plane. Using this solution we study the influence of a nearby scattering rigid surface, on a spherical model for the HRTF
%B 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01)
%I IEEE
%V 5
%P 3337-3340 vol.5 - 3337-3340 vol.5
%8 2001///
%@ 0-7803-7041-4
%G eng
%R 10.1109/ICASSP.2001.940373