Octave analysis allows for the objective evaluation of sound and vibration by grouping the frequencies of an acoustic signal into “bins,” often to reflect how humans perceive the frequency spectrum. ObserVIEW can now generate octave bands with an 8th order filter to meet IEC 61260-1 Class 1 filter specifications. A, C, and Z frequency weighting options are available to meet IEC 61672-1 requirement. Fast/slow or user-defined time weightings, linear or exponential averaging, and peak hold options are also available.