Public Speaking | Page 6

that can be used is brought into action to modify these uninterrupted vibrations of vocal cords and air. The lips, the cheeks, the teeth, the tongue, the hard palate, the soft palate, the nasal cavity, all co?perate to make articulate speech.
As in its mechanism, so in the essence of its modifications, the human voice is a marvel of simplicity. If the mouth be opened naturally and the tongue and lips be kept as much out of the way as in ordinary breathing, and then the vocal cords be made to vibrate, the resulting sound will be the vowel a as in father. If now, starting from that same position and with that same vowel sound, the tongue be gradually raised the sound will be modified. Try it. The sound will pass through other vowels. Near the middle position it will sound like a in _fate_; and when the tongue gets quite close to the roof of the mouth without touching it the vowel will be the e of feet. Others--such as the i of _it_--can be distinguished clearly.
Starting again from that same open position and with that same vowel sound, ah, if the tongue be allowed to lie flat, but the lips be gradually closed and at the same time rounded, the sound will pass from ah to the o of hope, then on to the oo of troop. The oa of broad and other vowels can be distinguished at various positions.
By moving lips and tongue at the same time an almost infinite variety of vowel sounds can be made.
Producing Consonants. In order to produce consonant sounds the other parts of the speaking apparatus are brought into operation. Everyone of them has some function in the formation of some consonant by interrupting or checking the breath. A student, by observing or feeling the motions of his mouth can easily instruct himself in the importance of each part if he will carefully pronounce a few times all the various consonant sounds of the language.
The lips produce the sounds of p, b, wh, and w. The lips and teeth produce the sounds of f, v. The tongue and teeth together make the sounds of th and dh. The tongue in conjunction with the forward portion of the hard palate produces several sounds--t, d, s, z, r, and l. The tongue operating against or near the rear of the hard palate pronounces ch, j, sh, zh, and a different r. To make the consonant y the tongue, the hard palate, and the soft palate operate. The tongue and soft palate make k and g. A strong breathing makes the sound of h. By including the nasal passages in conjunction with some of the other parts here listed the so-called nasals, m, n, and ng, are made. According to the organ involved our consonant sounds are conveniently grouped as labials (lips), dentals (teeth), linguals (tongue), palatals (palate), and nasals (nose).
The correct position and action of the vocal organs are of supreme importance to all speakers. Many an inveterate stammerer, stutterer, or repeater can be relieved, if not cured, of the embarrassing impediment by attention to the position of his speech organs and by careful, persistent practice in their manipulation. In fact every speaker must be cognizant of the placement of these parts if he desires to have control over his speech. Frequently it is such correct placement rather than loud noise or force which carries expressions clearly to listeners.
While it is true that singing will strengthen the lungs and help in control of breath, it is not always the fact--as might be expected--that singing will develop the speaking voice. Not every person who can sing has a pleasant or forceful voice in ordinary discourse. In singing, to secure purity of musical tone, the vowels are likely to be disproportionately dwelt upon. Thus we have the endless _la-la-la_ and _ah-ah_ of so many vocal show-pieces. The same practice leads to the repeated criticism that it makes no difference whether a song be in English or a foreign language--the listeners understand just as much in either case.
In speaking effectively the aim and method are the exact opposite. When a man speaks he wants to be listened to for the meaning of what he is uttering. There are so many words in the language with the same or similar vowel sounds that only the sharpest discrimination by means of consonants permits of their being intelligible. The speaker, therefore, will exercise the greatest care in pronouncing consonants distinctly. As these sounds usually begin and end words, and as they are produced by rather sudden checks or interruptions, they can be made to produce a wave motion in the air which will carry the entire word safely and clearly beyond the ear into the understanding. In public speaking no