Fig. 6.
The preprocessing of a selected lung sound signal (2.5 s segment) showing: a original signal, b MODWT wavelet smoothing, c rLOESS displacement removal, d z-score normalization
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.