A speaker must support his voice with breath while speaking so that it becomes more colourful, can vary in tempo, intonation, and dynamics, and retains its quality even as he ages.
You can find more information HERE:
A speaker must support his voice with breath while speaking so that it becomes more colourful, can vary in tempo, intonation, and dynamics, and retains its quality even as he ages.
You can find more information HERE: