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speaker
Yes. That is what microphones do.
It is possible to convert your speakers to wireless speakers but it is very expensive.
Microphones will convert sound waves into electrical signals. An ear (i..e human ear) will also convert sound waves into electrical signals.
Sound is collected by microphones, which are devices that convert sound waves into electrical signals that can be processed, stored, and reproduced. Microphones can come in various types, such as dynamic, condenser, and ribbon microphones, each with its own characteristics suited for different applications.
AM transmitters convert sound into amplitude modulated radio waves which am radios convert into electrical pulses which speakers convert into air waves that are converted into sound by our eardrum.
Well, when you transmit something as an electromagnetic wave, it is no longer an electric current, since an electromagnetic wave doesn't involve movement of charges. However, you can convert electrical energy into an electromagnetic wave, transfer that, and then convert it back to an electric current at the receiving end.
A cell 'phone does not transmit sound. It transmits electromagnetic radiation. Sound is converted to and from an electromagnetic signal by the microphone and speaker.
Bevel gears can transmit motion/power at right angles.
Objects that use magnets:CompassesSpeakersRefrigeratorsFridge MagnetsLaptopsElectro-MagnetsMotorsComputer Hard DrivesBank and Credit Cards
Speakers convert outgoing data into audible tones.
Of course, that's how solar panels work. They take the energy from the sun and convert it to electricity, which they then transmit into batteries.