How to filter 50 Hz from a digital signal.?
Best insight from top research papers
To filter out 50 Hz interference from a digital signal, various methods can be used. One approach is to use a notch filter, which attenuates the unwanted 50 Hz signal. Serra et al. developed a SC 50 Hz notch filter for an analog to digital acquisition channel in an IoT water management sensor node . Another method is to design a fixed center frequency band stop filter, also known as a notch filter, to eliminate power line interference. This can be achieved using virtual instrument software LabVIEW, as demonstrated by Huang et al. . Additionally, a digital signal filtering circuit can be employed, which includes a low-pass filtering circuit, a high-pass filtering circuit, and a band-pass filtering circuit connected in series . Li et al. proposed a continuous-time notch filter based on current steering technique, capable of providing 55.4 dB attenuation for the 50 Hz power line interference . Guo-quan designed a bandstop digital filter using Procedure and FDATool method to cancel the 50 Hz noise .
Answers from top 4 papers
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| Papers (4) | Insight |
|---|---|
01 Jan 2011 14 Citations | The provided paper describes a fully integrated continuous-time 50-Hz notch filter that can effectively reject power line interference. However, it does not provide information on how to filter 50 Hz from a digital signal. |
Open access•Journal Article 1 Citations | The paper provides a method to design a bandstop digital filter for cancelling 50Hz noise. The procedure and FDATool method were used to process the filter. |
25 Jun 2015 1 Citations | The paper describes the design of a 50Hz notch filter based on LabVIEW, which can effectively reject 50Hz power frequency interference in the preprocess of ECG signals. The filter is designed using a combination of low pass and high pass filters with cutoff frequencies of 49Hz and 51Hz respectively. The filter parameters can be obtained using the FIR filter design tool in LabVIEW. The paper also provides amplitude frequency characteristics and impulse response of the notch filter, showing its effectiveness in suppressing 50Hz interference. |
| The paper presents a SC 50 Hz notch filter for an analog to digital acquisition channel in an IoT water management sensor node to attenuate unwanted 50 Hz interference. |
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