It is not possible to determine by laryngoscopic examination what is
the natural register of an individual's voice. The vocal cords may be as
long in the tenor as in the bass; this shows what an important part the
resonator plays in the timbre or quality of the voice. Still, it is
generally speaking true, that a small larynx is more often associated with
a higher pitch of voice than a large larynx.
[Illustration: Fig. 10]
[Description: Fig. 10.--Diagram (modified from Aikin) illustrating the
condition of the vocal cords in respiration, whispering, and phonation. (1)
Ordinary breathing; the cords are separated and the windpipe can be seen.
(2) Deep inspiration; the cords are widely separated and a greater extent
of the windpipe is visible. (3) During the whisper the vocal cords are
separated, leaving free vent for air through the glottis; consequently
there is no vibration and no sound produced by the cords. (4) The soft
vocal note, or aspirate, shows that the chink of the glottis is not
completely closed, and especially the rima respiratoria (the space between
the vocal processes of the pyramidal cartilages.) (5) Strong vocal note,
produced in singing notes of the lower register. (6) Strong vocal note,
produced in singing notes of the higher register.
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