Experiment on Hum Noise Suppression using N-path Notch Filter
| Autor: | Takeshi Shima, Khilda Afifah, Nicodimus Retdian, Muhammad Arijal |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Power line noise
Signal processing Noise suppression Computer science Acoustics 020208 electrical & electronic engineering Buffer amplifier 02 engineering and technology Band-stop filter Noise Path (graph theory) 0202 electrical engineering electronic engineering information engineering Hum 020201 artificial intelligence & image processing |
| Zdroj: | ISPACS |
| DOI: | 10.1109/ispacs.2018.8923266 |
| Popis: | Hum noise activity such as power line noise is one of critical problems in biomedical signals processing. Various approaches both analog or digital techniques have been proposed. However, these approaches have some disadvantages. This paper proposes the N-path notch filter as a hum noise suppression. The notch depth in a conventional N-path notch filter depends on the value of off-resistance in the switch. A new N-path notch filter with additional sample-and-hold (S/H) and leak buffer circuit is proposed. Measurement results show with the additional leak buffer circuit improves the notch depth by 61.25dB. |
| Databáze: | OpenAIRE |
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