Location and intensity prediction of wave energy

AI Thread Summary
The discussion centers on methods for determining the location and intensity of vibrations without using the Doppler effect. Participants highlight that while triangulation with multiple microphones can provide directionality and intensity measurements, Doppler effects are not applicable if neither the source nor the receiver is moving. The conversation also touches on the limitations of auditory perception, noting that without additional information, one cannot accurately gauge the distance or volume of a sound source. The mention of the inverse scattering problem suggests a potential avenue for further exploration in this context. Overall, the thread emphasizes the complexities of accurately assessing sound source characteristics from a distance.
OTed
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Hello forum,
Is there any method of knowing the location of source and probably intensity of vibration from afar without sorting to a doppler effect?
This is in the same as our auditory sense, when people call us at a distance we could easily approximate how far they are and the volume they speak
 
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What are you talking about? Very generally speaking you can only say that the information about the energy and momentum of fields is in their energy-momentum-stress tensor which follows via Noether's theorem from the action principle, underlying their equation of motion.
 
If you have multiple microphones, you can do some kind of triangulation. If you measure the phase delay between them you can get good information about the direction of the source. And intensity is always measured by the microphone.
 
Hi OTed
welcome to PF :smile:

OTed said:
Is there any method of knowing the location of source and probably intensity of vibration from afar without sorting to a doppler effect?

I suspect you meant to say ... resorting to Doppler effect"...

if neither sound source nor receiver are moving ... there is no Doppler
and where one of them is moving, Doppler only tells you about the speed of one of them in relation to the other
OTed said:
This is in the same as our auditory sense, when people call us at a distance we could easily approximate how far they are and the volume they speak

we cannot do that as you suggest ... as we have no information as to if the person we are hearing is close and speaking quiet or loud or visa versa ... distant and speaking loud or quite

We might be able to use other senses eg. sight and see if the person is visibly close or far, but we still have no direct knowledge on how quiet or loud the person is speakingDave
 
OTed said:
Hello forum,
Is there any method of knowing the location of source and probably intensity of vibration from afar without sorting to a doppler effect?
This is in the same as our auditory sense, when people call us at a distance we could easily approximate how far they are and the volume they speak

Are you referring to the inverse scattering problem?
 
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