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2015-05-22T00:02:34+05:30

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No ,  you cannot produce sound without utilizing one's energy.   

Sound requires energy to propagate.   When an object vibrates, then sound waves are produced.   When we speak, the voice comes from the vibrations of vocal cords / folds / muscles.  In order that the muscles compress/expand, vibrate, move,  energy is required.

So we cannot speak without utilizing energy.


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