کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4335664 1295173 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-cost, high-fidelity, adaptive cancellation of periodic 60 Hz noise
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Low-cost, high-fidelity, adaptive cancellation of periodic 60 Hz noise
چکیده انگلیسی

A common method to eliminate unwanted power line interference in neurobiology laboratories where sensitive electronic signals are measured is with a notch filter. However a fixed-frequency notch filter cannot remove all power line noise contamination since inherent frequency and phase variations exist in the contaminating signal. One way to overcome the limitations of a fixed-frequency notch filter is with adaptive noise cancellation. Adaptive noise cancellation is an active approach that uses feedback to create a signal that when summed with the contaminated signal destructively interferes with the noise component leaving only the desired signal. We have implemented an optimized least mean square adaptive noise cancellation algorithm on a low-cost 16 MHz, 8-bit microcontroller to adaptively cancel periodic 60 Hz noise. In our implementation, we achieve between 20 and 25 dB of cancellation of the fundamental 60 Hz noise component.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Neuroscience Methods - Volume 185, Issue 1, 15 December 2009, Pages 50–55
نویسندگان
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