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Article

The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization

Institute of Communications Technology, Gottfried Wilhelm Leibniz Universität Hannover, DE-30167 Hannover, Germany
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Appl. Sci. 2019, 9(3), 460; https://doi.org/10.3390/app9030460
Received: 16 December 2018 / Revised: 14 January 2019 / Accepted: 24 January 2019 / Published: 29 January 2019
(This article belongs to the Special Issue Psychoacoustic Engineering and Applications)
Several studies show that the reverberation and spectral details in direct sounds are two essential cues for perceived externalization of virtual sound sources in reverberant environments. The present study investigated the role of these two cues in contralateral and ipsilateral ear signals on perceived externalization of headphone-reproduced binaural sound images at different azimuth angles. For this purpose, seven pairs of non-individual binaural room impulse responses (BRIRs) were measured at azimuth angles of −90°, −60°, −30°, 0°, 30°, 60°, and 90° in a listening room. The magnitude spectra of direct parts were smoothed, and the reverberation was removed, either in left or right ear BRIRs. Such modified BRIRs were convolved with a speech signal, and the resulting binaural sounds were presented over headphones. Subjects were asked to assess the degree of perceived externalization for the presented stimuli. The result of the subjective listening experiment revealed that the magnitude spectra of direct parts in ipsilateral ear signals and the reverberation in contralateral ear signals are important for perceived externalization of virtual lateral sound sources. View Full-Text
Keywords: magnitude spectra; reverberation; contralateral ear; ipsilateral ear; perceived externalization; binaural room impulse response; head-related transfer function; headphone-reproduced virtual sound images; binaural reproduction magnitude spectra; reverberation; contralateral ear; ipsilateral ear; perceived externalization; binaural room impulse response; head-related transfer function; headphone-reproduced virtual sound images; binaural reproduction
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MDPI and ACS Style

Li, S.; Schlieper, R.; Peissig, J. The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization. Appl. Sci. 2019, 9, 460. https://doi.org/10.3390/app9030460

AMA Style

Li S, Schlieper R, Peissig J. The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization. Applied Sciences. 2019; 9(3):460. https://doi.org/10.3390/app9030460

Chicago/Turabian Style

Li, Song, Roman Schlieper, and Jürgen Peissig. 2019. "The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization" Applied Sciences 9, no. 3: 460. https://doi.org/10.3390/app9030460

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