Baseline corrections in spectroscopy are necessary to remove background noise and ensure accurate interpretation of spectral data. Ideally, this baseline should be a straight line at. Baseline correction refers to a set of preprocessing techniques for spectroscopy. A baseline is a collection or “zeros” done at each wavelength in the scan. Traditional methods like MSC, SNV, and EMSC effectively address scatter and baseline issues in spectroscopy. Modern techniques, including wavelet-based corrections and machine. In textbooks, the method for measuring the baseline and blank is often described as "solvent / solvent", but it is now unnecessary to place anything in the reference beam.