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与P48放大器兼容的MEMS测量麦克风
1Institute of Mechanics and Mechatronics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria.
HardwareX
|February 21, 2025
概括
本研究介绍了微电机系统 (MEMS) 麦克风的低成本预放大器,使高精度的音频测量成为可能. 该设计为专业音频应用提供了紧,可适应的解决方案.
科学领域:
- 电气工程 电气工程
- 声学 声学 在声学方面
- 音频工程 音频工程
背景情况:
- 微电子机械系统 (MEMS) 麦克风在消费电子产品中被广泛采用,因为它们的成本效益,性能和制造一致性.
- 需要价格实惠,高精度的预放大器,与MEMS麦克风和专业音频标准 (IEC 61938) 兼容.
研究的目的:
- 设计和验证一个具有成本效益的预放大器,用于将MEMS麦克风囊与IEC 61938专业音频设备接口.
- 创建一个适合集成到标准1/2英寸或12毫米外的紧型预放大器,作为商业测量麦克风的直接替代品.
主要方法:
- 详细的电路设计和全面的理论计算.
- 进行了广泛的模拟,以预测前放大器性能特征.
- 在受控声环境中使用商用MEMS囊进行实验测量和性能验证.
主要成果:
- 预放大器设计通过计算,模拟和现实世界的测量来证明出色的性能指标.
- 测试证实了该设备在与MEMS囊配对时具有高精度音频测量和录制的能力.
- 该设计适应各种MEMS囊的可适应性得到了详细电路描述的支持.
结论:
- 开发的预放大器为使用MEMS麦克风进行专业音频测量提供了高性能,低成本的解决方案.
- 紧而适应的设计可轻松集成到现有的测量设置中,取代商业替代品.
- 该研究为在精密音频应用中利用MEMS技术提供了坚实的基础.
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