用四个商业系统测量相同对象的扭曲产品耳声学排放的比较
Edyta Pilka1,2, Henryk Skarżyński1,2, W Wiktor Jedrzejczak1,2
1Institute of Physiology and Pathology of Hearing, Mochnackiego 10 Street, 02-042 Warsaw, Poland.
Journal of clinical medicine
|November 27, 2025
概括
商业扭曲产物音响排放 (DPOAEs) 系统在噪声底部和振幅上显示出显著的差异,尽管频率概况相似. 这些变化意味着DPOAE设备在临床上是不可互换的,这凸显了行业标准的必要性.
科学领域:
- 听力学 听力学是指听力学.
- 耳声波排放 耳声波排放 耳声波排放
- 听力科学 听力科学
背景情况:
- 扭曲产物音声发射 (DPOAEs) 对于纵向耳评估至关重要.
- 在DPOAE测量的系统间的变化可能会使跨临床解释变得复杂.
- 本研究通过比较商业DPOAE系统来解决标准化需求.
研究的目的:
- 为了比较四个商业系统的DPOAE结果.
- 评估DPOAE测量的会话内可重复性.
- 为了识别噪声平面,信号噪声比率和振幅的系统间差异.
主要方法:
- 有正常听力 (84个耳朵) 的成年人使用四个DPOAE系统进行了测试:HearID DP,SmartDPOAE,Eclipse DPOAE20和Echoport ILO 292 USB I.
- DPOAEs记录在八度和八度间的频率从1到8kHz.
- 每只耳朵进行了两次测量,探头重新定位以评估可重复性.
主要成果:
- 所有系统都表现出相似的频率响应配置文件,但绝对值不同.
- 幅度差异在1.5-4 kHz之间最小,在6 kHz之间最大.
- 噪音水平有很大的差异,其中HearID DP和SmartDPOAE表现最好 (噪音最低).
- HearID DP显示了最高的检测率 (100%).
- 测试-重新测试可靠性在各个系统中都很好,会话内差异很小 (通常≤2dB).
结论:
- 尽管频率响应相似,但DPOAE系统在噪声地板,SNR和振幅方面存在临床上显著的差异.
- 设备间的变化往往超过最小可检测变化,使DPOAE设备不可互换.
- 整个行业的标准对于在不同诊所进行可靠的DPOAE比较至关重要.
相关概念视频
01:06Echo
1.2K
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,...
1.2K
01:30Electronic Distance Measuring Instruments
771
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
771