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A trader must know how to project her voice on demand.

I have to find a new way to speak clearly and to project my voice further.

The use of the microphone helped to project her voice.

He then uses a machine to project his voice to the location.

But the program, she said, has taught her how to project her voice and look at the audience.

There are innumerable books on public speaking, dealing with everything from how to project your voice to what to wear.

He projected his voice as if still in a courtroom.

I couldn't project my voice and felt mildly breathless when speaking.

He required no microphone to project his voice across the entire chamber.

Even just being able to project my voice in the classroom adds energy.