The English H has been variously classified, and still more variously and vaguely defined. Some phonologists have discovered in it the properties of a vowel; most have agreed to regard it as a consonant. Webster declared it to be “not strictly a vowel nor an articulation, but a letter sui generis”—a negative classification that may be accepted to-day. The letter has been termed the symbol of a guttural breathing, an evanescent breathing, a mere breathing, a strong breathing, a whisper, and “a propulsed aspiration” (B. H. Smart); and some affirm it to be “no sound at all.”
The English H represents an action rather than a sound. When the action indicated accompanies the utterance of a vowel, a change is produced in the vowel-sound; hence, Bishop Wilkins (1668) called the H a “guttural vowel”—not, however, a particularly happy definition.
In stating H to be “a letter sui generis,” Webster enounced a truth that many have seemed inclined to overlook. Consonants are distinct sounds that precede or follow other consonants and vowels; but the Aspirate becomes part of any vowel it accompanies. This may be otherwise expressed by saying, that in aspirating we emit a noiseless current of unvocalised breath that gradually vocalises itself into an aspirated vowel. The truth of the assertion may be tested by pronouncing an aspirated vowel, e.g., “ha,” and observing that no change in position of the vocal organs occurs during the act. In uttering a syllable consisting of a consonant and a vowel, a change of position is requisite to the formation of each constituent element—for example, in the case of “fa.” Thus then, the H in well-spoken English does not represent a distinct and independent sound; but prescribes a breathing that modifies the vowel it accompanies. It is A SIGNAL TO ASPIRATE THE SUCCEEDING VOWEL.
This oneness of the vowel and its H is productive of a change in the natures of both. The a in “hall” is as different from that in “all,” as is the Aspirate of “hall” from that of “heel.” It follows, therefore, that these Aspirates are equal in number to the vowel-sounds (said to be about seventeen), and that the letter H represents them all. For convenience sake, one speaks of “the sound of an H,” “to pronounce, or aspirate an H,” and “to drop an H;” meaning respectively, the sound of an aspirated vowel, to aspirate, and to omit to aspirate a vowel with an H before it.
As already submitted, most H’s may, now-a-days, be said to be soundless, although not “Silent H’s;” the latter might with more propriety be termed functionless letters. To soundless H’s one exception distinctly occurs in English; to wit, the H that precedes the long ū, as in hue, huge, humor, &c. This H—a phonetic link between the ancient English H’s and the modern Aspirate—has a sound of its own, and may be heard. Elevating the base of the tongue so as to leave a narrow aperture between its centre and the palate, we emit, with vocalized breath, the sound y heard in yew; with breath that is not vocalized we produce the subdued, palatal grating sound constituting the H of hue. Hence, HŪ represents a vowel preceded by an audible H, and not a vowel-sound that is aspirated. The Arabic ﺡ corresponds to the H of HŪ.
Other kinds and degrees of H are enumerated by Mr Ellis, who gives a list of six. They vary in power from that of the scarcely audible aspiration that the Cockney introduces into “park” (paahk), to that of the jerked breath that h‘ represents in bah‘. The breathings of the different H’s vary also in degree of intensity according to the nature and strength of their vowels; being most pronounced in the case of long and open vowels,—compare “hard” and “hit.”
Some writers have described aspirated vowels as being whispered vowels. The error of this description is obvious to the most superficial observer; it would mean that aspirated vowels are unvocalized. A man, moreover, need not drop his H’s though he holloa through a speaking trumpet.
Vocalized breath is that which carries with it a sound produced by vibrations of the vocal chords. These are situate in the larynx, and may be felt vibrating, by placing the hand on the throat while they are in action. “Krantzenstein and Kempelen have pointed out that the conditions necessary for changing one and the same sound into different vowels, are difference in the size of two parts—the oral canal and the oral opening,” (vide Kirkes’ Physiology). Some consonants are produced by this kind of breath, but with the concurrence also of certain movements of the lips, tongue, &c., and they are called sonants or voiced consonants: Ex.—l, n, r, &c.
Unvocalized breath is that employed in whispering. With the assistance of certain movements of the speech-organs, unvocalized breath produces in ordinary speech a class of consonants that are called surds or breathed consonants: Ex.—f, s, t, &c.
Note.—T is of the class called momentary or explosive consonants. They need the help of a vowel, or of a voiced consonant, in order to express themselves fully. This circumstance, together with the fact of vocalised breath entering into the formation of many consonants, will probably account for the common notion that no consonant can be uttered without a vowel accompaniment. The independence of the sibilant s, offers alone a sufficient refutation of the assumption. It is in Polynesia that savages are found who cannot put two consonants together without a vowel between them.