Electroacoustic evaluation of the bone conduction transducer B250 for vestibular and hearing diagnostics in comparison with Radioear B71 and B81.

IF 1.8 3区医学 Q2 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY

International Journal of Audiology Pub Date : 2025-04-01 Epub Date: 2024-05-14 DOI:10.1080/14992027.2024.2352054

Karl-Johan Fredén Jansson, Bo Håkansson, Ann-Charlotte Persson, Luca Verrecchia, Sabine Reinfeldt

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引用次数: 0

Abstract

Objective: The objective is to evaluate the electroacoustic performance of the B250 transducer and to compare it with the two most widely used audiometric transducers B71 and B81.

Design: The electroacoustic performance was evaluated in terms of sensitivity level, distortion, maximum hearing level and electrical impedance.

Study sample: Six B250 prototype transducers were evaluated and compared with published data of B71 and B81 together with complementary measurements of maximum hearing level at 125 Hz and phase of electrical impedance. Differences in reference equivalent threshold vibratory force levels were estimated by comparing hearing threshold measurements of 60 healthy ears using B81 and B250.

Results: B250 has approximately 27 dB higher sensitivity levels than both B71 and B81 at 250 Hz and can generate higher maximum hearing level at low frequencies: 11.8 to 35.8 dB (125-1000 Hz) higher than B71, and 1.4 to 18.6 dB (125-750 Hz) higher than B81. The maximum average difference in reference threshold force levels was 13.5 ± 8.7 dB higher for B250 at 250 Hz compared to B81.

Conclusions: B250 can produce higher output force with less distortion than B71 and B81, especially at 125 and 250 Hz, which could possibly improve low frequency investigations of the audio-vestibular system.

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用于前庭和听力诊断的骨传导传感器 B250 与 Radioear B71 和 B81 的电声评估比较。

目标：目的是评估 B250 传感器的电声性能，并将其与两种最广泛使用的听力传感器 B71 和 B81 进行比较：设计：从灵敏度水平、失真、最大听力水平和电阻抗等方面对电声性能进行评估：研究样本：对 6 个 B250 原型传感器进行了评估，并将其与 B71 和 B81 的公开数据以及 125 Hz 最大听力水平和电阻抗相位的补充测量结果进行了比较。通过比较使用 B81 和 B250 对 60 只健康耳朵进行的听阈测量结果，估算出参考等效阈值振动力水平的差异：结果：在 250 赫兹时，B250 的灵敏度比 B71 和 B81 高约 27 分贝，在低频时能产生更高的最大听力水平：比 B71 高 11.8 至 35.8 分贝（125-1000 赫兹），比 B81 高 1.4 至 18.6 分贝（125-750 赫兹）。与 B81 相比，B250 在 250 Hz 时的参考阈值力水平的最大平均差异为 13.5 ± 8.7 dB：结论：与 B71 和 B81 相比，B250 可以产生更高的输出力，失真更小，尤其是在 125 和 250 Hz 时，这可能会改善对听觉前庭系统的低频调查。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Audiology 医学-耳鼻喉科学

CiteScore

4.90

自引率

14.80%

发文量

133

审稿时长

4-8 weeks

期刊介绍： International Journal of Audiology is committed to furthering development of a scientifically robust evidence base for audiology. The journal is published by the British Society of Audiology, the International Society of Audiology and the Nordic Audiological Society.