1/3 Octave Spectrum

This analyser performs a 1/3-octave band analysis of the input wave and outputs the 1/3-octave band time-spectrum and spectrum and specific loudness pattern following ISO532B (Zwicker method).


The internal calibration of this analyser is such that a 1 kHz tone yields the calibrated level in the 1/3-octave band centred on 1 kHz. Note that this is different to the internal calibration of the FFT Spectrum and related analysers, which are based on the power sum of all frequency components.

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