Phonotypy is a method of representing each of the elementary sounds by a distinct printed character or letter.

The VOCALS or TONICS are those elementary sounds made by an unmodified or uninterrupted tone of the voice; as ā, ĕ.

The SUBVOCALS or SUBTONICS are those elementary sounds made by the tone of the voice modified by the organs of speech, making an undertone; as b, d, g, r.

The ASPIRATES or ATONICS are those elementary sounds made by merely breathing modified by the organs of speech; sometimes called breath sounds; as p, t, s.

TABLE OF ELEMENTARY SOUNDS.
[From Swett's Normal Word Book.]

I. Vocals.

a ā-le, āi-m
ä ä-lms, ä-rt
a̤-ll, b-a̤-ll
ă ă-n, m-ă-n
â c̵-â-re, â-ir
ȧ ȧ-sk, f-ȧ-st
ē ē-ve, b-ē
ě ě-nd, m-ě-n
h-ẽ-r, ẽ-rr
ī, ȳ ī-ce, b-ȳ
ĭ, y̆ ĭ-t, h-y̆-mn
ō ō-ld, n-ō
ǒ ǒ-n, n-ǒ-t
o̤, o͞o m-o̤-ve, m-o͞o-n
ū ū-se, m-ū-şe
ǔ ǔ-p, b-ǔ-t
û û-rge, b-û-rn
ụ, o͝o f-ụ-ll, w-o͝o-l
oi, oy oi-l, b-oy
ou, ow ou-t, ow-l

II. Subvocals.

b b-i-b, b-a-be
d d-i-d, d-ea-d
ḡ-i-ḡ, ḡ-a-ḡ
j j-ar, j-et
l l-u-ll, te-ll
m m-ai-m, c̵a-me
n n-u-n, n-o-ne
ng, ṉ ri-ng, i-ṉ-k
r r-oa-r, r-ea-r
th th-ese, wi-th
v val-ue, v-ain
w w-ell, w-eb
y y-es, y-et
z z-one, z-est
zh, z a-z´-ure, sei-z´-ure

III. Aspirates.