Interesting early (but not the earliest) phonographs

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Abdul Alhazred
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Interesting early (but not the earliest) phonographs

Post by Abdul Alhazred » Tue Dec 25, 2018 2:36 pm

The first phonographs simply amplified the sound vibrations of the needle with a big megaphone.

But might there not be a better way?

Such as hydraulics? :BigGrin3:
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xouper
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Re: Interesting early (but not the earliest) phonographs

Post by xouper » Tue Dec 25, 2018 2:40 pm

Abdul Alhazred wrote:
Tue Dec 25, 2018 2:36 pm
But might there not be a better way?
Yep. https://en.wikipedia.org/wiki/Laser_turntable

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Witness
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Re: Interesting early (but not the earliest) phonographs

Post by Witness » Tue Dec 25, 2018 10:47 pm

↑ Interesting. Swiss EPFL developed a turntable cartridge using a rounded glass fiber (instead of the usual diamond needle) to read the – hopefully still pristine – upper part of LP tracks. Many years ago.
Alas I never saw commercial results.