Details
| Original language | English |
|---|---|
| Article number | 21 |
| Number of pages | 15 |
| Journal | Acta Acustica |
| Volume | 4 |
| Issue number | 5 |
| Early online date | 14 Oct 2020 |
| Publication status | Published - 2020 |
Abstract
Perceived externalization is a relevant feature to create an immersive acoustic environment with headphone reproduction. In the present study, listener-specific acoustic transfer characteristics for an azimuth angle of 90° were modified to investigate the role of monaural spectral cues, interaural level differences (ILDs), and temporal fluctuations of ILDs on perceived externalization in anechoic and reverberant environments. Listeners' ratings suggested that each acoustic cue was important for perceived externalization. If only one correct acoustic cue remained in the ear signals, the sound image could not be perceived as fully externalized. Reverberation did reduce but not eliminate the influences of monaural spectral and ILD cues on perceived externalization. Additionally, the spectral details of the ipsilateral ear signal were more important for perceived externalization than those in the contralateral ear signal. A computational model was proposed to quantify those relationships and predict externalization ratings by comparing the acoustic cues extracted from the target (modified) and template (non-processed) binaural signals after several auditory processing steps. The accuracy of predicted externalization ratings was higher than 90% under all experimental conditions.
Keywords
- Externalization, ILD temporal fluctuations, Interaural level differences, Monaural spectral cues
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
- Health Professions(all)
- Speech and Hearing
- Engineering(all)
- Electrical and Electronic Engineering
- Computer Science(all)
- Computer Science Applications
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In: Acta Acustica, Vol. 4, No. 5, 21, 2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modeling perceived externalization of a static, lateral sound image
AU - Li, Song
AU - Baumgartner, Robert
AU - Peissig, Jürgen
N1 - Funding Information: The authors would like to thank those who participated in the listening tests. R.B. was supported by the Austrian Science Fund (FWF): J3803-N30.
PY - 2020
Y1 - 2020
N2 - Perceived externalization is a relevant feature to create an immersive acoustic environment with headphone reproduction. In the present study, listener-specific acoustic transfer characteristics for an azimuth angle of 90° were modified to investigate the role of monaural spectral cues, interaural level differences (ILDs), and temporal fluctuations of ILDs on perceived externalization in anechoic and reverberant environments. Listeners' ratings suggested that each acoustic cue was important for perceived externalization. If only one correct acoustic cue remained in the ear signals, the sound image could not be perceived as fully externalized. Reverberation did reduce but not eliminate the influences of monaural spectral and ILD cues on perceived externalization. Additionally, the spectral details of the ipsilateral ear signal were more important for perceived externalization than those in the contralateral ear signal. A computational model was proposed to quantify those relationships and predict externalization ratings by comparing the acoustic cues extracted from the target (modified) and template (non-processed) binaural signals after several auditory processing steps. The accuracy of predicted externalization ratings was higher than 90% under all experimental conditions.
AB - Perceived externalization is a relevant feature to create an immersive acoustic environment with headphone reproduction. In the present study, listener-specific acoustic transfer characteristics for an azimuth angle of 90° were modified to investigate the role of monaural spectral cues, interaural level differences (ILDs), and temporal fluctuations of ILDs on perceived externalization in anechoic and reverberant environments. Listeners' ratings suggested that each acoustic cue was important for perceived externalization. If only one correct acoustic cue remained in the ear signals, the sound image could not be perceived as fully externalized. Reverberation did reduce but not eliminate the influences of monaural spectral and ILD cues on perceived externalization. Additionally, the spectral details of the ipsilateral ear signal were more important for perceived externalization than those in the contralateral ear signal. A computational model was proposed to quantify those relationships and predict externalization ratings by comparing the acoustic cues extracted from the target (modified) and template (non-processed) binaural signals after several auditory processing steps. The accuracy of predicted externalization ratings was higher than 90% under all experimental conditions.
KW - Externalization
KW - ILD temporal fluctuations
KW - Interaural level differences
KW - Monaural spectral cues
UR - http://www.scopus.com/inward/record.url?scp=85120685019&partnerID=8YFLogxK
U2 - 10.1051/aacus/2020020
DO - 10.1051/aacus/2020020
M3 - Article
AN - SCOPUS:85120685019
VL - 4
JO - Acta Acustica
JF - Acta Acustica
IS - 5
M1 - 21
ER -