Laser microphones?

Just stumbled upon this thing. Looks exciting but I am skeptical. Can laser vibrometers really measure drum head vibrations in a way that would translate to representative sounds? Could there be a future with this or is it actually just a joke?

[NAMM] Sennheiser Laser Drum Microphone news - Audiofanzine

Well - Sennheiser had an optical microphone on the market over 10 years ago - so they are well used to the technology.

They have just taken it to the next level.
 
Just a different variation of a condenser mic... it can potentially be even more sensitive but ultimately, it is measuring the movement of a plate in response to sound waves striking it, and transferring that measurement into a voltage that your audio equipment can read... the limitations of the frequency response will be based on the material used for audio vibration capture... bouncing the light off a piece of glass would respond different than a piece of metal or plastic due to frequency resonance and flexibility...
 
We are not listening drumhead vibrations, but air vibrations coming from drumhead.
But some case drumhead pickup can be alternative or additional signal to add to mic signal.
Like piezo pickup on acoustic guitar - we are not listening saddle vibrations (when listening acoustic guitar).
But it is relatively cheap and low feedback solution, and even becomes rather lo-fi, but std on acoustic guitar.
 
In theory, pointing a laser at a drum head to measure the fine nuances of the drum head movement could be used effectively for a new type of trigger for electronic drums, but it would completely ignore the dynamics of the air movement and the wood and the type of stick... Not sure if this is a great idea for recording great sounding drums, but it would be a great improvement on drum triggers.
 
Austin Powers "International Man of Mystery"
Dr. Evil: You know, I have one simple request. And that is to have sharks with frickin' laser beams attached to their heads!
 
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