TAKE TECH

6.7. 11:50

NHK WORLD-JAPAN

10 minutes

Talk into a microphone and your voice comes out from a speaker, loud and clear. Find out how the mic, speaker and amplifier work together to make sounds louder.

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English

Talk into a microphone and your voice comes out from a speaker, loud and clear. Find out how the mic, speaker and amplifier work together to make sounds louder.