Study on the accuracy of azimuthal sound source localization and the effect of different azimuth directions and angular interval settings
10.16066/j.1672-7002.2025.02.004
- VernacularTitle:水平方位声源定位准确性与不同方位角方向及角度间隔设置关系的研究
- Author:
Jinsheng DAI
1
;
Xiaolin HE
;
Jiaying LI
;
Xing WANG
;
Xiaohui WEN
;
Ningyu WANG
;
Juan ZHANG
Author Information
1. 首都医科大学附属北京朝阳医院耳鼻咽喉头颈外科,北京 100020
- Keywords:
Sound Localization;
sound source recognition;
open sound field test
- From:
Chinese Archives of Otolaryngology-Head and Neck Surgery
2025;32(2):82-85,93
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To investigate the relationship between azimuth direction,angular intervals,and the accuracy of azimuthal sound source localization.METHODS Fifteen young subjects with normal hearing were tested using nine azimuth settings.The test results were presented as root mean square error and percentage confusion.RESULTS The confusion rate under high-frequency narrowband noise was significantly higher than that under broadband noise and three-syllable words.In the frontal direction,statistically significant differences were observed between the 20° and 10° intervals,as well as between the 20° and 15° intervals(P<0.05),but no significant difference was found between the 10° and 15° intervals(P>0.05).In the lateral and rear directions,statistically significant differences were found between the 30° and 15° intervals,as well as between the 30° and 20° intervals(P<0.05),but no significant difference was found between the 15° and 20° intervals(P>0.05).Statistically significant differences were observed between the frontal direction and both the lateral and rear directions(P<0.05),but no significant difference was found between the lateral and rear directions(P>0.05).CONCLUSION Using stimuli that contain broader bandwidth cues can more accurately reflect the subject's horizontal localization ability.For source azimuth identification tests using broadband noise and three-syllable words,it is recommended to use a 15° interval in the frontal direction,and a 20° interval in the lateral and rear directions.The frontal and lateral directions can be preferred for testing.
