Adaptive Acoustic Noise Cancellation for Magnetoelectric Sensors
| العنوان: | Adaptive Acoustic Noise Cancellation for Magnetoelectric Sensors |
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| المؤلفون: | Andre Piorra, Gerhard Schmidt, Jens Reermann, Eckhard Quandt, Reinhard Knöchel, Sebastian Salzer, Iulian Teliban, Michael Hoft |
| المصدر: | IEEE Sensors Journal. 15:5804-5812 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Coupling, Physics, Microphone, Acoustics, Binary number, law.invention, Noise, law, Electromagnetic shielding, Shielded cable, Electronic engineering, Electrical and Electronic Engineering, Focus (optics), Instrumentation, Excitation |
| الوصف: | Sensors based on the magnetoelectric (ME) effect have the potential to be genuine alternatives for measuring bio-magnetic signals. Unfortunately, the sensor structure usually inhibits the problem that several non-magnetic types of noise couple mechanically into the sensor: in this contribution, we will focus on undesired acoustic coupling. Therefore, an adaptive cancellation approach based on a computationally efficient gradient estimation algorithm with a pseudo-optimally control scheme is proposed. The approach is using a microphone as a noise reference sensor and is implemented in real time. An evaluation in terms of measurements is performed inside a magnetically shielded chamber. For a particular scenario, which is characterized by double excitation, an algorithm with binary control-scheme improves the signal-to-noise ratio (SNR) only by around 4dB. If the proposed control scheme is used instead, an improvement of the SNR of around 13dB is achieved. |
| تدمد: | 2379-9153 1530-437X |
| DOI: | 10.1109/jsen.2015.2448753 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::0ef613a9e9af8e9910d830d3151d1e2f https://doi.org/10.1109/jsen.2015.2448753 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........0ef613a9e9af8e9910d830d3151d1e2f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23799153 1530437X |
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| DOI: | 10.1109/jsen.2015.2448753 |