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Butterworth Filtering at 500 Hz Optimizes PPG-Based Heart Rate Variability Analysis for Wearable Devices: A Comparative Study

Photoplethysmography (PPG)-based heart rate variability (HRV) offers a cost-effective alternative to electrocardiography (ECG) for autonomic monitoring in wearable devices. We optimized signal processing on a 16-bit microcontroller by comparing 4th-order equivalent Butterworth and Elliptic IIR bandp...

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Principais autores: Nagima Abdrasulova, Milana Aleksanyan, Min Ju Kim, Jae Mok Ahn
Formato: Artigo
Idioma:Inglês
Publicado: MDPI AG 2025-11-01
Series:Sensors
Assuntos:
heart rate variability
photoplethysmography
IIR filters
Butterworth filter
elliptic filter
signal processing
Acceso en liña:https://www.mdpi.com/1424-8220/25/22/7091
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