Sunday, May 21, 14:30 — 15:00
Christoph Pörschmann (Chair)
EB04-01 A Spherical Near-Field HRTF Set for Auralization and Psychoacoustic Research
Christoph Pörschmann (Presenting Author), Johannes M. Arend (Author), Annika Neidhardt (Author)
Head-related transfer functions (HRTFs) describe the directional filtering caused by the head, pinna, and torso and are an essential component of binaural synthesis systems. Currently most of these systems are based on far-field HRTFs and thus do not consider acoustical specifics of nearby sound sources. One reason might be that full spherical near-field HRTF sets are rarely available. In this paper we present an HRTF set of a Neumann KU100 dummy head and a technical evaluation of the set. The set is freely available for download and contains post-processed impulse responses, captured on a circular and full spherical grid at distances between 0.25 m and 1.50 m. It can be used for psychoacoustic research and for applications where nearby virtual sound sources shall be auralized.
Engineering Brief 322
EB04-02 Binaural Recording System and Sound Map of Malaga
Carmen Rosas (Presenting Author), Salvador Luna-Ramirez (Author)
This Engineering Brief describes part of the results obtained in the Master Thesis ‘”Binaural Recording System and Sound Map” for the Masters in Acoustic Engineering at the University of Malaga. The aim of this project is the construction and the characterization of a pair of in-ear binaural microphones with high-quality capsules. A set of HRTF measurements was obtained and applied to different audio signals for the realization of a psychoacoustic experiment to assess the spatiality provided by the system. For the system assessment, another set of audio samples was generated from the MIT’s HRTFs, and both results have been compared. Additionally, different soundscapes have been recorded with the binaural system, and a binaural sound map of Malaga has been developed, which aims to create an archive to collect and conserve the most distinctive sounds of the city using an immersive technology.
Engineering Brief 323