Projekteja vuodessa
Abstrakti
Making small head movements facilitates spatial hearing by resolving front-back confusions, otherwise common in free field sound source localization. The changes in interaural time difference (ITD) in response to head rotation provide a robust front-back cue, but whether interaural level difference (ILD) can be used as a dynamic cue is not clear. Therefore, the purpose of the present study was to assess the usefulness of dynamic ILD as a localization cue. The results show that human listeners were capable of correctly indicating the front-back dimension of high-frequency sinusoids based on level dynamics in free field conditions, but only if a wide movement range was allowed (±40∘). When the free field conditions were replaced by simplistic headphone stimulation, front-back responses were in agreement with the simulated source directions even with relatively small movement ranges (±5∘), whenever monaural sound level and ILD changed monotonically in response to head rotation. In conclusion, human listeners can use level dynamics as a front-back localization cue when the dynamics are monotonic. However, in free field conditions and particularly for narrowband target signals, this is often not the case. Therefore, the primary limiting factor in the use of dynamic level cues resides in the acoustic domain behavior of the cue itself, rather than in potential processing limitations or strategies of the human auditory system.
Alkuperäiskieli | Englanti |
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Sivut | 196-207 |
Sivumäärä | 12 |
Julkaisu | Hearing Research |
Vuosikerta | 377 |
Varhainen verkossa julkaisun päivämäärä | 2019 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 1 kesäk. 2019 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Resolving front-back ambiguity with head rotation: the role of level dynamics'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 2 Päättynyt
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Tilakuulon moniaistilliset aivomekanismit
Salminen, N. (Vastuullinen tutkija)
01/09/2016 → 15/08/2019
Projekti: Academy of Finland: Other research funding
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Tilakuulon moniaistilliset aivomekanismit
Pulkki, V. (Vastuullinen tutkija), Pöntynen, H. (Projektin jäsen) & Hyvärinen, P. (Projektin jäsen)
01/09/2016 → 07/07/2020
Projekti: Academy of Finland: Other research funding
Lehtileikkeet
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Effects of spatial cue dynamics on the perceptual organization of sound
20/07/2021
1 kohde/ Medianäkyvyys
Lehdistö/media: Esiintyminen mediassa