optic sound hard copy

[Wiikid6]

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.

 

[davenn]

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

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

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

you need to explain your project much more clearly

Dave

 

[FvM]

How about using classical photographic sound film technology?

 

[Wiikid6]

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

you need to explain your project much more clearly

Dave

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?

 

[FvM]

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.