Acoustic Frequency Hole - How does this work?

AI Thread Summary
The discussion centers on the concept of an "Acoustic Frequency Hole," a phenomenon observed in a project that successfully demonstrated its effects. Participants are seeking explanations for the underlying mechanics of how this acoustic phenomenon operates. The original poster shares their experience of replicating the project but expresses confusion about the scientific principles involved. The conversation highlights a desire for clarity on the acoustic principles that create this frequency hole effect. Understanding these principles is essential for further exploration and application of the phenomenon.
SuperCass
Messages
60
Reaction score
0
Acoustic "Frequency Hole" -- How does this work?

Here is a project proposal that I read:
http://amasci.com/freenrg/audhole.html

I decided to give it a try and I made this project and it works.
But I don't seem to understand why and how this works. Can someone explain this phenomenon?

Thanks!
 
Physics news on Phys.org


Bump!
 
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...
Back
Top