在现场测试中,不同声音对人类回声定位的有效性
Michał Bujacz1, Aleksandra Królak1, Bartłomiej Sztyler1
1Institute of Electronics, Lodz University of Technology, Lodz, Poland.
PloS one
|October 17, 2024
概括
与视力正常的人相比,盲人表现出更高的回声定位能力. 特定的声音特征,如3-4kHz宽频噪声,提高了回声定位的准确性,以获得更好的空间定向.
科学领域:
- 神经科学是一个神经科学.
- 感官感知是一种感官感知.
- 人与计算机的交互
背景情况:
- 超声定位是视力障碍者重要的空间定位方法.
- 用于回声定位的各种声音 (嘴巴的点击,棒棒的敲击,设备).
- 了解声音的有效性是提高回声定位技能的关键.
研究的目的:
- 为了评估不同声音在回声定位任务中的有效性.
- 为了比较盲人和有视力的个体之间的回声定位性能.
- 为了确定回声定位的最佳声音特征.
主要方法:
- 对12名盲人和14名视力正常的志愿者进行了试验,这些志愿者没有接受过正式培训.
- 测试了来自扬声器,机械点击器和参与者生成的声音的声音.
- 参与者在户外环境中确定了障碍物的方向和距离.
主要成果:
- 盲人参与者在回声定位方面的表现明显优于有视力的参与者.
- 完全失明的人比剩余视力的人表现更好.
- 3-4kHz中心频率和宽频谱的声音产生了更高的精度.
- 蓝色和粉红色噪音对盲人群最有效;打击乐音对有视力的人最有效.
- 扬声器产生的音调比参与者产生的声音更有效.
结论:
- 盲人在回声定位方面具有固有的优势.
- 声音频率,频谱和生成方法显著影响回声定位性能.
- 调查结果可以为回声定位培训和辅助技术的发展提供信息.
更多相关视频
06:04Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
343
11:39Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
Published on: September 7, 2022
2.1K
相关概念视频
01:06Echo
493
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
493
00:53Sound Intensity Level
4.1K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.1K