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Main Title: Assessing the Authenticity of Individual Dynamic Binaural Synthesis
Author(s): Brinkmann, Fabian
Lindau, Alexander
Vrhovnik, Martina
Weinzierl, Stefan
Type: Article
Language Code: en
Series/Report no.: Proc. of the EAA Joint Symposium on Auralization and Ambisonics, Berlin, 2014;paper #10
Abstract: Binaural technology allows to capture sound fields by recording the sound pressure arriving at the listener’s ear canal entrances. If these signals are reconstructed for the same listener the simulation should be indistinguishable from the corresponding real sound field. A simulation fulfilling this premise could be termed as perceptually authentic. Authenticity has been assessed previously for static binaural resynthesis of sound sources in anechoic environments, i.e. for HRTF-based simulations not accounting for head movements of the listeners. Results indicated that simulations were still discernable from real sound fields, at least, if critical audio material was used. However, for dynamic binaural synthesis to our knowledge – and probably because this technology is even more demanding – no such study has been conducted so far. Thus, having developed a state-of-the-art system for individual dynamic auralization of anechoic and reverberant acoustical environments, we assessed its perceptual authenticity by letting subjects directly compare binaural simulations and real sound fields. To this end, individual binaural room impulses were acquired for two different source positions in a medium-sized recording studio, as well as individual headphone transfer functions. Listening tests were conducted for two different audio contents applying a most sensitive ABX test paradigm. Results showed that for speech signals many of the subjects failed to reliably detect the simulation. For pink noise pulses, however, all subjects could distinguish the simulation from reality. Results further provided evidence for future improvements.
Issue Date: 18-Mar-2014
Date Available: 18-Mar-2014
Notes: This contribution was part of the EAA Joint Symposium on Auralization and Ambisonics in Berlin, 2014. Please cite the contribution according to this style: FirstName1 LastName1, FirstName2 LastName2, FirstName3 LastName3: "Title of the Article", in: Proc. of the EAA Joint Symposium on Auralization and Ambisonics, Berlin, 2014, pp. XXX-XXX, DOI:
Appears in Collections:Technische Universität Berlin » Fakultäten & Zentralinstitute » Fakultät 1 Geistes- und Bildungswissenschaften » Institut für Sprache und Kommunikation » Fachgebiet Audiokommunikation » Proceedings of the EAA Joint Symposium on Auralization and Ambisonics 2014

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