5th video in the “Swimmers” web series: “The Voice of Swimming”:
They often go unnoticed, though their voices are (literally) ringing in your ears. They are the puppet-masters, the dictators of the pace, tone, and excitement of swim meets. And while you casually watch each race, they scramble behind the microphone, calculating splits, learning pronunciations, scanning facts and forecasting the race – all at the same time.
They are swim meet announcers.
Read more here on usaswimming.org