Question on Magnetic polarization

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Magnetic polarization can produce sound when the alignment of magnetic dipoles shifts in response to an external magnetic field. This phenomenon may generate friction, resulting in audible sound. Some experiments have demonstrated that microphones can directly capture sound from moving dipoles without waiting for mechanical vibrations. The changing magnetic field induced by these dipoles creates voltage in the microphone, allowing for sound recording. This area of study highlights the intersection of magnetism and acoustics.
arlo
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Question on Magnetic polarization

Is it possible to hear/record the sound created by the shifting of the alignment of magnetic dipoles when introduced to an external magnetic field?

I believe that for some materials, this shifting causes friction which in return produces sound. Has anyone done this before?
 
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Once I saw (or rather heard) an experiment on this topic. If I understand it right, you don't have to wait for dipoles to cause mechanical vibrations. With a microphone you can get sound directly from moving dipoles, because they cause changing magnetic field which induces voltage in the microphone.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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