Existence Region of the Tonal Residue. I

The present article is an extension of an earlier study of the frequency region in which a tonal residue can be established for an harmonic complex of three frequency components. A description will be given of measurements carried out to determine the influence of the number of components and of the spectral envelope of a filtered periodic pulse wave on the extension of the original frequency region. This extension was measured for two pulse repetition rates, i.e., 200 and 280 cps. It is found that a tonal residue can be heard if, and only if, at least three components of an harmonic complex sound, consisting of more components, are situated within the frequency region of the tonal residue for a three component complex. Implications of this rule with respect to the operation of a theoretical pitch‐extractor are presented.