Analyzing notch patterns of head related transfer functions in CIPIC and SYMARE databases

The sensation of elevation in binaural audio is known to be strongly correlated to spectral peaks and notches in HRTFs, introduced by pinna reflections. In this work we provide an analysis methodology that helps us to explore the relationship between notch frequencies and elevation angles in the median plane. In particular, we extract the portion of the HRTF due to the presence of the pinna and we use it to extract the notch frequencies for all the subjects and for all the considered directions. The extracted notch frequencies are then clustered using the K-means algorithm to reveal the relationship between notch frequencies and elevation angles. We present the results of the proposed analysis methodology for all the subjects in the CIPIC and SYMARE HRTFs databases.

[1]  J. Hebrank,et al.  Pinna reflections as cues for localization. , 1974, The Journal of the Acoustical Society of America.

[2]  H. Traunmüller.  Analytical expressions for the tonotopic sensory scale , 1990 .

[3]  W. M. Rabinowitz,et al.  Auditory localization of nearby sources. II. Localization of a broadband source. , 1999, The Journal of the Acoustical Society of America.

[4]  A. Sarti,et al.  SOUND SPATIALIZATION BASED ON FAST BEAM TRACING IN THE DUAL SPACE , 2003 .

[5]  Armando Barreto,et al.  Augmented Hankel Total Least-Squares Decomposition of Head-Related Transfer Functions , 2010 .

[6]  Augusto Sarti,et al.  A low-cost solution to 3D pinna modeling for HRTF prediction , 2016, 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[7]  J. Hebrank,et al.  Spectral cues used in the localization of sound sources on the median plane. , 1974, The Journal of the Acoustical Society of America.

[8]  W. M. Rabinowitz,et al.  Auditory localization of nearby sources. Head-related transfer functions. , 1999, The Journal of the Acoustical Society of America.

[9]  Richard O. Duda,et al.  A structural model for binaural sound synthesis , 1998, IEEE Trans. Speech Audio Process..

[10]  Kim S. Abouchacra,et al.  Binaural and Spatial Hearing in Real and Virtual Environments , 1998 .

[11]  T. Anderson,et al.  Binaural and spatial hearing in real and virtual environments , 1997 .

[12]  C. Avendano,et al.  The CIPIC HRTF database , 2001, Proceedings of the 2001 IEEE Workshop on the Applications of Signal Processing to Audio and Acoustics (Cat. No.01TH8575).

[13]  Dorte Hammershøi,et al.  Binaural Technique: Do We Need Individual Recordings? , 1996 .

[14]  Simone Spagnol,et al.  On the Relation Between Pinna Reflection Patterns and Head-Related Transfer Function Features , 2013, IEEE Transactions on Audio, Speech, and Language Processing.

[15]  Kazuhiro Iida,et al.  Median plane localization using a parametric model of the head-related transfer function based on spectral cues , 2007 .

[16]  Jason E. Summers.  Auralization: Fundamentals of Acoustics, Modelling, Simulation, Algorithms, and Acoustic Virtual Reality , 2008 .

[17]  Augusto Sarti,et al.  REAL TIME MODELING OF ACOUSTIC PROPAGATION IN COMPLEX ENVIRONMENTS , 2004 .

[18]  V. Ralph Algazi,et al.  Physical and Filter Pinna Models Based on Anthropometry , 2007 .

[19]  24th European Signal Processing Conference, EUSIPCO 2016, Budapest, Hungary, August 29 - September 2, 2016 , 2016, European Signal Processing Conference.

[20]  Ramani Duraiswami,et al.  Extracting the frequencies of the pinna spectral notches in measured head related impulse responses. , 2004, The Journal of the Acoustical Society of America.

[21]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[22]  F L Wightman,et al.  Localization using nonindividualized head-related transfer functions. , 1993, The Journal of the Acoustical Society of America.

[23]  D. W. Batteau,et al.  The role of the pinna in human localization , 1967, Proceedings of the Royal Society of London. Series B. Biological Sciences.

[24]  J. A. Hartigan,et al.  A k-means clustering algorithm , 1979 .

[25]  Craig T. Jin,et al.  Creating the Sydney York Morphological and Acoustic Recordings of Ears Database , 2012, 2012 IEEE International Conference on Multimedia and Expo.

[26]  Gregory H. Wakefield,et al.  Introduction to Head-Related Transfer Functions (HRTFs): Representations of HRTFs in Time, Frequency, and Space , 2001 .