ABSTRACT
This research investigates the relationship between octave position and spectral envelope. Octave position is the physical counterpart of tone height, which is that attribute of pitch used to discriminate between notes that are separated by octave intervals. Spectral envelope is the physical determinant of brightness, which is that attribute of timbre that is varied by the tone control on many transistor radios. The tone control varies the degree of
bass or treble that may be heard in the sound signal, by adjusting the relative intensity of each of the signal’s component frequencies.
