Intra-subject variability in FO-SPLmin voice profiles.
Representations of a subject's minimum vocal intensities (SPLmin) at selected levels of pitch range are called, FO-SPLmin Profiles. Such displays potentially are an indirect means of documenting a person's change in laryngeal function and status. The potentiality is limited by insufficient evidence that subject's performances are replicable on repeated testing. As a pilot study, four normal adults produced their SPLmin at 1/3 octave increments of pitch range on three occasions over a 2-week period. It appears that FO-SPLmin Profiles are replicable. The magnitudes of SPLmin seem to correlate with increments of pitch range at which subjects phonated and increase at a rate of 8 to 12 dB/octave starting around 65 dB (3.8 cm from the lips).
D000328:Adult; D005260:Female; D006801:Humans; D007830:Larynx / Q000502:physiology; D008297:Male; D008875:Middle Aged; D010699:Phonation; D013016:Sound; D014827:Vocal Cords / Q000502:physiology; D014831:Voice