Matlab - Signal Noise Removal

How could we remove noise from signals as show in in attached pictures, Thanks

Answer 1

[Image Analyst]

There are no pictures attached except for one embedded above your sentence. And I'm not sure what you consider to be the noise in that curve.

There are a variety of noise reduction filters, probably the most common are median filter, sliding mean filter, Savtizky-Golay filter, and wiener filter, though there are tons of others.