Calibration aspects of binaural sound reproduction over insert earphones

Pablo F. Hoffmann, Milos Markovic, Søren Krarup Olesen, Esben Madsen, Dorte Hammershøi

Research output: Contribution to journalConference abstract in journalResearchpeer-review


Earphones are nowadays widely adopted for the reproduction of audio material in mobile multimedia and communication platforms, e.g. smartphones. Reproduction of high-quality spatial sound on such platforms can dramatically improve their applicability, and since two channels are always available in earphone-based reproduction, binaural reproduction can be applied directly. This paper is concerned with the theoretical and practical aspects relevant to the correct reproduction of binaural signals over insert earphones. To this purpose, a theoretical model originally developed to explain the acoustic transmission to and within the open ear canal is revisited [Møller, Appl. Acoust., 36, 171-218 (1992)]. The model is modified accordingly in order to investigate the aspects of the transmission within the blocked ear canal that are significant to the calibration required to preserve the natural spatial cues that exist during normal hearing conditions, i.e. during an open-ear-canal situation. To evaluate the validity of the theoretical considerations outlined in this paper, measurements are conducted using an IEC711 occluded-ear simulator with a number of different types of insert earphones.
Original languageEnglish
JournalThe Journal of the Acoustical Society of America
Issue number4, Pt. 2
Pages (from-to)3255-3255
Publication statusPublished - Apr 2012
EventAcoustics 2012 Hong Kong - Hong Kong, China
Duration: 13 May 201218 May 2012


ConferenceAcoustics 2012 Hong Kong
CityHong Kong

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