The floating mass transducer as a microphone-a pilot study.

IF 0.8 4区医学 Q4 OTORHINOLARYNGOLOGY

Hno Pub Date : 2025-06-03 DOI:10.1007/s00106-025-01597-1

Stefan Kaulitz, Carolina Köstler, Kristen Rak, Rudolf Hagen, Stephan Hackenberg, Mario Cebulla

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引用次数: 0

Abstract

Background: This study investigates the inverse use of the Vibrant Soundbridge® Floating Mass Transducer (FMT; MED-EL, Innsbruck, Austria) as a microphone in a pilot test. Should this be applicable, it would open up interesting application possibilities, e.g., as a microphone for a fully implantable cochlear implant.

Materials and methods: Experimental measurements on an ear canal-eardrum model were used to analyze the acoustic properties of the FMT when used as a microphone, including frequency response and sensitivity. The FMT from the Direct Drive Simulation Set was coupled to the artificial eardrum for this purpose.

Results: The results show that the FMT has a usable signal-to-noise performance over the entire frequency range investigated, albeit with a non-linear frequency characteristic. The highest sensitivity was found between 1500 and 2000 Hz.

Conclusion: The study suggests that an FMT optimized for microphone properties could be used as a microphone in the middle ear, which would open up new possibilities for the development of fully implantable hearing systems. Further investigations, in particular measurements on the petrous bone, are required to determine the suitability of the FMT as a middle ear microphone more precisely.

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作为麦克风的浮动质量传感器——一个试点研究。

背景：本研究探讨了动态声桥®浮动质量传感器(FMT；MED-EL，因斯布鲁克，奥地利)在试点测试中作为麦克风。如果这是适用的，它将开辟有趣的应用可能性，例如，作为一个完全植入式人工耳蜗的麦克风。材料与方法：采用耳道-鼓膜模型实验测量，分析FMT作为传声器时的声学特性，包括频率响应和灵敏度。为此，直接驱动模拟装置中的FMT与人工鼓膜耦合。结果：结果表明，尽管具有非线性频率特性，但FMT在整个频率范围内具有可用的信噪比性能。最高灵敏度在1500和2000 Hz之间。结论：优化了传声器性能的FMT可作为中耳传声器，为全植入式听力系统的发展开辟了新的可能性。进一步的研究，特别是对石质骨的测量，需要更精确地确定FMT作为中耳传声器的适用性。

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

Hno 医学-耳鼻喉科学

CiteScore

1.50

自引率

33.30%

发文量

116

审稿时长

4-8 weeks

期刊介绍： HNO is an internationally recognized journal and addresses all ENT specialists in practices and clinics dealing with all aspects of ENT medicine, e.g. prevention, diagnostic methods, complication management, modern therapy strategies and surgical procedures. Review articles provide an overview on selected topics and offer the reader a summary of current findings from all fields of ENT medicine. Freely submitted original papers allow the presentation of important clinical studies and serve the scientific exchange. Case reports feature interesting cases and aim at optimizing diagnostic and therapeutic strategies. Review articles under the rubric ''Continuing Medical Education'' present verified results of scientific research and their integration into daily practice.