Your Body Is The Amplifier

Shouting raises volume by driving the vocal folds harder. Projection raises usable sound through efficient coordination: steady breath, a relaxed vocal tract, clear articulation, and resonance sensations that help the voice carry. One approach wears tissue out quickly; the other usually costs less effort, but it still needs pacing, rest, and good technique. This is how trained singers can fill a hall without a microphone while protecting their voices.