How to remove the background noise from the signal data ?

Data contains biological signature with background noise? need to remove the background noise, so i will get a clear biological signature . Details of the data: Sampling frequency=50kHz, sampling duration=30 seconds.

Please give me the idea how to remove the background noise using matlab codes. i need a .m file.

thanks

Answer 1

[Image Analyst]

Use a denoising filter. Like perhaps sgolay(), the Savitzky-Golay filter, in the Signal Processing Toolbox which fits a polynomial to the data in a sliding window. There is also a curve fitting toolbox that you may need for more complicated signals.