If a person were to blast an electrically polarized dipole drum head with sound, it would not directly radiate radio waves. Radio waves and sound waves are different forms of electromagnetic radiation. Let's break down the process to understand why radio waves wouldn't be directly generated in this scenario:
Sound Waves: When the person blasts the dipole drum head with sound, it generates mechanical vibrations in the drum head. These vibrations create compression and rarefaction of the surrounding air molecules, which propagates as sound waves through the air. Sound waves are a form of mechanical energy, and they cannot directly transform into electromagnetic waves like radio waves.
Electrically Polarized Dipole: An electrically polarized dipole is a structure that has an uneven distribution of electric charge, resulting in a positive and negative side. It is commonly found in antennas used for radio frequency communication, but in this scenario, it seems like it is not directly involved in generating the sound waves.
However, there is a phenomenon known as the "piezoelectric effect" that relates to the generation of an electric field when certain materials are mechanically deformed. Piezoelectric materials can convert mechanical energy into electrical energy. So, if the dipole drum head were made of a piezoelectric material and mechanically deformed by the sound waves, it could produce a weak electrical signal.
But, to be clear, this weak electrical signal would still not be in the form of radio waves. It would be a low-frequency electrical signal resulting from the piezoelectric effect, and it would not directly radiate as radio waves.
If you wanted to generate radio waves, you would need a specific radio frequency (RF) signal generator or an antenna designed to transmit radio waves at the desired frequency. The piezoelectric effect itself is not used to directly generate radio waves for communication purposes.