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A comment on Digital Needle: Ripping vinyl records with a scanner (2013). Parent comment
The data has to be processed very quickly. I believe you should think in terms of 0.3m groove per second.
If you put a camera above the groove you also need something like a stepper motor to control the arm.
But I believe the biggest problem is dust. A needle will move small particles out of the way, but a camera does not.
This is also why laser turntables need 'clipping' filters. Dust will create all kinds of noise you don't want to hear.
How about designing an arm that used more than one laser 'needle'?
The data has to be processed very quickly. I believe you should think in terms of 0.3m groove per second.
If you put a camera above the groove you also need something like a stepper motor to control the arm.
But I believe the biggest problem is dust. A needle will move small particles out of the way, but a camera does not.
This is also why laser turntables need 'clipping' filters. Dust will create all kinds of noise you don't want to hear.