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First you convert the sound into a modulated electric current using a microphone, then you convert the modulated electric current into a visible pattern using an oscilloscope.

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13y ago
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7y ago

Basically anything that vibrates. If the vibrations are between about 20 and 20,000 Hz, then the sound will be of the same frequency, and we will be able to hear it.

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7y ago

Loud speakers.

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Q: Which type of device emits a sound wave?
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