声音定位
耳机
话筒
声学
计算机科学
混响
助听器
均衡(音频)
立体声录音
声源定位
水平面
优先权效应
语音识别
声音(地理)
扬声器
电信
工程类
物理
频道(广播)
机械工程
作者
Florian Denk,Stephan D. Ewert,Birger Kollmeier
出处
期刊:Journal of the Acoustical Society of America
[Acoustical Society of America]
日期:2019-09-01
卷期号:146 (3): 1732-1744
被引量:24
摘要
Limited abilities to localize sound sources and other reduced spatial hearing capabilities remain a largely unsolved issue in hearing devices like hearing aids or hear-through headphones. Hence, the impact of the microphone location, signal bandwidth, different equalization approaches, as well as processing delays in superposition with direct sound leaking through a vent was addressed in this study. A localization experiment was performed with normal-hearing subjects using individual binaural synthesis to separately assess the above-mentioned potential limiting issues for localization in the horizontal and vertical plane with linear hearing devices. To this end, listening through hearing devices was simulated utilizing transfer functions for six different microphone locations, measured both individually and on a dummy head. Results show that the microphone location is the governing factor for localization abilities with linear hearing devices, and non-optimal microphone locations have a disruptive influence on localization in the vertical domain, and an effect on lateral sound localization. Processing delays cause additional detrimental effects for lateral sound localization; and diffuse-field equalization to the open-ear response leads to better localization performance than free-field equalization. Stimuli derived from dummy head measurements are unsuited for evaluating individual localization abilities with a hearing device.
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