Voice is a series of air vibrations. To strengthen it two things are necessary:
more air or breath, and more vibration.
Breath is the very basis of voice. As a bullet with little powder behind it will
not have force and carrying power, so the voice that has little breath behind it
will be weak. Not only will deep breathing--breathing from the diaphragm--give
the voice a better support, but it will give it a stronger resonance by
improving the general health.
Usually, ill health means a weak voice, while abundant physical vitality is
shown through a strong, vibrant voice. Therefore anything that improves the
general vitality is an excellent voice strengthener, provided you _use_ the
voice properly. Authorities differ on most of the rules of hygiene but on one
point they all agree: vitality and longevity are increased by deep breathing.
Practise this until it becomes second nature. Whenever you are speaking, take in
deep breaths, but in such a manner that the inhalations will be silent.
Do not try to speak too long without renewing your breath. Nature cares for this
pretty well unconsciously in conversation, and she will do the same for you in
platform speaking if you do not interfere with her premonitions.
A certain very successful speaker developed voice carrying power by running
across country, practising his speeches as he went. The vigorous exercise forced
him to take deep breaths, and developed lung power. A hard-fought basketball or
tennis game is an efficient way of practising deep breathing. When these methods