Always remember that projecting your voice does not at any time mean - shouting. I have had the opportunity to observe political party candidates and their comrade in arm while addressing a gathering be it small or large shouting for no rhyme or reason similarly teachers or guests at a party shout wildly. What all of them fail to understand that instead of shouting you can take advantage of your maximum carrying power of your voice is developed by the vital center of yours. You must have seen that even when you are speaking very quietly the muscles in your diaphragm and those around it are supporting every word. Do not ever forget that proper posture is the most important criteria which allow these muscles freedom of action. When you need to project your voice a bit higher to catch the attention of people around you, these muscles simply digs deeper and tightens. Voices need not be forced and normally even in a crowded area your voice can reach up to fifteen feet without much difficulty.
Try to follow these simple exercises with duration of five minutes each, for at least four times a day and your muscles will become stronger with hardly any strain on your voice. Always keep your posture upright that is standing, chest up and stomach in while doing these exercises. A) Take a short breath and on a single long exhalation start to count loudly as fast as you can and see how far you can go. Everyday I can assure you that your number will increase maybe from 60-80-100 etc. B) Here also take a short breath and now exhale slowly with the sound H-i-s-s-s-s-s-s through your teeth and check your watch and see how long does it last. Never push your breath just let it come out. C) Wet your index finger and think of this as a candle, hold it about 8 – 10 inches away from your mouth, keep your mouth in a whistling position and direct your exhalation in a thin stream of air and feel the passing air on your index finger. Next position your index finger about 16 – 18 inches and repeat. This gets tougher and you will find your muscles tension going lower and the support deepening.