Low-pass differentiators for biological signals with known spectra: application to ECG signal processing.
Digital low-pass filtering and differentiation (LPD) are useful in real-time processing of many biomedical signals. A general method is presented for determining the coefficients of a differentiator that maximizes the signal-to-noise ratio or minimizes the error between actual and ideal LPD filters, when signal and noise spectra are known. Several examples of digital filters suitable for QRS complex and P-T wave processing in ECG are presented.
Laguna
P
P
Institut de Cibernética, Universitat Politécnica de Catalunya-CSIC, Barcelona, Spain.
Thakor
N V
NV
Caminal
P
P
Jańe
R
R
D004562:Electrocardiography / Q000379:methods*; D008955:Models, Cardiovascular; D012815:Signal Processing, Computer-Assisted