De-Noising ECG Wavelet Disrete in Matlab using Command Line

Signals emulated with the generator Agilent 33220A and acquired with oscilloscope Le Croy LC 578AL waveform 'cardiac'. Parameters: ECG Hb (Heart beat) 65 Hz; fs (sampling frequency) 10 KSs ; Vpp=2; 2.24V(-1.12,1.12 V); offset(-0.56 V).

How can I make the signal denoising using the command line with the wavelet transform (maybe using 'db1')?

Answer 1

[Wayne King]

'db1' is the Haar wavelet filter, so that is probably not the best choice.

You can try wden() as one option. As an example

    load noisdopp;
    lev = 5;
    xd = wden(noisdopp,'heursure','s','one',lev,'sym8');
    plot(noisdopp); hold on;
    plot(xd,'r','linewidth',2)
    legend('Original Signal','Denoised Signal');

Answer 2

[Avishake Bardhan]

load noisdopp;

lev = 5;

xd = wden(noisdopp,'heursure','s','one',lev,'sym8');

plot(noisdopp); hold on;

plot(xd,'r','linewidth',2)

legend('Original Signal','Denoised Signal');