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optic sound hard copy

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Wiikid6

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Hello there! I'm planning to make an optic recording device and I need some sort of material or device that can read the light and make a hard copy of it so I can play it back. I would like to stay away from computer application programming at all costs. I am using a laser for the output device so would heat-sensitive paper work? If so what kind of laser would I need to get the best results? Could I modify a 35 mm film roll to do it? what do you think is the best method for this?

Thank you!

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I want it to be analog because I want to get a non digital sound.
 

I am using a laser for the output device so would heat-sensitive paper work?
Click to expand...

I want it to be analog because I want to get a non digital sound.
Click to expand...

what does the first part have to do with analog sound ??

you need to explain your project much more clearly

Dave
 

How about using classical photographic sound film technology?
 
davenn said:
what does the first part have to do with analog sound ??

you need to explain your project much more clearly

Dave
Click to expand...

I'm hooking up a microphone to a laser. The laser changes intensity as the sound changes it's volume. I got the idea from the way laser record players work, and a fiber optic sound transmitter from a project in a Radio Shack project book.

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Since I couldn't find any distributors, maybe I could make a special pinhole camera with a motor or maybe first a crank to test it?. Since the laser is so bright, it wouldn't have to be exposed for a long time. The only problem I see are short recording times and the frames. What do you think? What speed would you think I'd have to run it at?
 

A brief review of optical analog film sound recording techniques can be found here: https://en.wikipedia.org/wiki/Sound-on-film

Please notice that coding the sound signal as line width is a prerequisite to achieve a certain linearity and dynamic (signal to noise ratio) in sound reproduction. The noise level is still high if no additional dynamic compression (Dolby) is used.
 

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