Patent ID: 8010299

Claim:
A method for the determination of chemical or physical property of a sample or a component of a sample comprising the steps of: a. obtaining an interferogram and/or at least one interferogram element corresponding to a modulation of electromagnetic signal emitted from, transmitted onto or through, or having interacted with at least a part of the sample, b. performing i. at least one transformation of the interferogram and/or a segment of the interferogram and/or an interferogram element with at least one function, wherein said function is capable of transforming an interferogram, an interferogram segment or element to a score, wherein a score is defined by ∑ i ⁢ ⁢ I ⁡ ( x i ) * f ⁡ ( x i ) where I is interferogram data, f is function, x is domain of interferogram, and i is index to discrete interferogram elements, ii. optionally repeating i) for another segment of the interferogram and/or interferogram element, wherein the transformation does not comprise a Fourier Transformation if i) is conducted only once, thereby obtaining at least one score as defined by ∑ i ⁢ ⁢ I ⁡ ( x i ) * f ⁡ ( x i ) where I is the interferogram data, f is the function, x is the domain of interferogram, and i is the index to discrete interferogram elements, and c. correlating said at least one score to the at least one chemical or physical property.