The mechanism of the human voice

by Emil Behnke

The criterion of correct inspiration is, as I have said before, an increase of size of the abdomen and of the lower part of the chest. Whoever draws in the abdomen and raises the upper part of the chest in the act of filling his lungs does wrong.

Meanwhile, in continuing the breathing exercises, the time of holding the breath may be increased at the rate of two seconds per week; so that the student who, during the first fortnight, limited himself to four seconds will, at the end of six weeks, hold his breath during twelve seconds. I have, in some instances, with students of mine, gone as far as twenty seconds; but I desire very earnestly to warn my readers to be cautious and not to go to extremes. Nothing will be gained, but infinite harm may ensue by over-doing these lung gymnastics, and persons at all inclined to bleeding from the lungs should not undertake the exercises at all, except with the sanction of their medical adviser, who will limit the practice according to circumstances.

The second breathing exercise is the exact opposite of the first, and consists in taking a rapid inspiration and making the expiration slow, even, uninterrupted and without jerking or trembling. My musical readers will at once see the importance of this exercise for the purpose of singing sustained tones and florid passages; but it would be quite useless to attempt it before No. 1 has been sufficiently practised.

The third and last breathing exercise consists in taking the inspiration as in No. 1, and the expiration as in No. 2. After the two preceding ones have been fully mastered this last is easy enough; and the student who has persevered so far will now have overcome one of the greatest difficulties of a vocalist, namely, the proper management of the breath, an accomplishment which seems to become more and more rare in our go-ahead times of electricity.

I feel that my description of these breathing exercises is far from complete, and what is worse, that it may lead to misunderstandings, the results of which will hereafter be laid to my charge. But writing, however lucid and careful, can never take the place of vivâ voce instruction; and I wish it to be distinctly understood that the explanations here given are not by any means intended to supersede the aid of a competent and painstaking teacher.

I will take leave of this part of my subject by warning my readers against the mistake, which may be caused by a superficial perusal of these pages, that it is the chief aim of the above breathing exercises to enable the singer or speaker to cram as much air as possible into the lungs. I have pointed out some of the evils which are likely to arise from exaggerated breathing efforts; yet I wish to say again, most emphatically, that it is quite possible to overcrowd the lungs with air. This is a matter of every-day occurrence, which is not, however, on that account any the less reprehensible; for, as I have already mentioned, it is sure to lead, sooner or later, to forcing and inequality of voice, and to congestion of the vessels and tissues of the throat and of the lungs.

Now we come to the question of the production and cultivation of the voice, including the nature and the proper treatment of the registers. In this connection I shall endeavour to explain a series of exercises based upon physiological facts, which will enable the reader to strike out a safe and direct path, avoiding much useless drudgery, and leading to eminently satisfactory results. As it is not my object to supply a singing manual, but simply to point out the way of treating the voice upon scientific principles, I shall not attempt to deal separately with the different classes of voices, or to go into minute details; but it will rather be my aim to lay down general principles, leaving my readers to carry them into practice, and to elaborate them according to individual circumstances. It must also be borne in mind that the exercises I am going to recommend will here be taken as they suggest themselves, while passing in review the various parts which unitedly form the mechanism of the human voice. Therefore, in the actual process of training a voice, they will have to be taken in a different order from that in which they are discussed here, in accordance with the general plan of this book.

The movements of the pyramids with the vocal ligaments attached to them are governed by two sets of muscles pulling them either together or away from each other. These have been fully described under the names of the "Closing Muscles" and the "Opening Muscles;" and the reader will at once see the importance of devising a set of exercises which shall call these opening and closing muscles into play, thereby making them powerful, and bringing them under the control of the will.

This is, fortunately, a very simple matter; for all we have to do is to sing a series of short tones, each tone to be followed by a short inspiration. We have learnt that every time we strike a tone the vocal ligaments are made to approximate; by so doing we therefore exercise the closing muscles. Every time we take an inspiration the vocal ligaments are separated; by so doing therefore we exercise the opening muscles. It is plain from these explanations that, by practising in the manner just indicated, we shall gain the same results in five minutes which it would take us half an hour to obtain by singing sustained tones after the usual method of teaching.

Let me now give as clear a description of the exercise as possible. Find the pitch of your speaking voice, which we will say is F. Then sing the following:—