This part of ISO 18431 specifies the algebraic functions which describe a selected set of time domain windows used for pre-processing digitally sampled vibration and shock data as a precursor to Discrete Fourier Transform spectral analysis. This selected set consists of Hanning, flat-top and rectangular time windows.
This part of ISO 18431 is one of a series of documents that details the tools available for time domain, frequency domain, and joint time and frequency domain signal processing.