Is it possible to have a input & output screen or speaker?

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Discussion Overview

The discussion revolves around the feasibility of creating devices that can function as both input and output systems, specifically focusing on screens and speakers. Participants explore the theoretical and practical implications of integrating recording capabilities into existing technologies, such as speakers and screens, and consider historical examples of similar technologies.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that since speakers and microphones are similar, it might be possible for speakers to record sound, questioning why screens cannot similarly absorb and emit light.
  • Another participant argues that while screens absorb light, they lack the necessary components to record images, suggesting that adding a separate camera is more practical.
  • There is a proposal about the potential for a pixelated screen design where each pixel has an adjacent camera pixel, with some expressing confidence in its feasibility.
  • A historical reference is made to a Radio Shack Electronics Project Kit that utilized a device functioning as both a speaker and microphone, indicating that such dual-function devices have existed.
  • Discussion includes the idea that existing speakers could record if properly connected to a recording device, but they would not perform as well as dedicated microphones.
  • One participant mentions an old ship intercom system that used speakers as microphones, providing an example of dual-functionality in audio technology.

Areas of Agreement / Disagreement

Participants express differing views on the practicality and feasibility of integrating recording capabilities into screens and speakers. While some acknowledge the existence of dual-function devices, others emphasize the limitations of current technology and the practicality of using separate devices.

Contextual Notes

There are unresolved questions regarding the physics of light absorption and emission in screens, as well as the technical requirements for creating a dual-function device. The discussion reflects a mix of theoretical exploration and practical considerations without reaching a consensus.

SciencePerson
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K so you have your computer screen, and speakers, but can they record too (input)!? My speaker vibrates by electricity to make sound, so why can't my voice make (these speakers) vibrate and send electrical signals back? A wire shoots out photons in x amount of brightness through a color-filter, and seems to be able to record any color in cameras, I know you could have a nanotech/organism switch really fast OR have a output pixel and camera pixel right beside each other for each "pixel", but what about a wire/ect that can shoot out, and take in? The screen could also do it at the same time since photons pass through each other!
 
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A speaker and microphone are very similar devices, so yes to that. Screen and camera? No, they are very different.
 
But what are the physics of why I can't find a way to make the screen where the wire that shoots photons also absorbs them?

And can't you definitely though make a pixel-ed screen where each pixel has a camera pixel next to it? I'm sure this is possible to make.

Also has our civilization discovered yet and use this 2way speaker? And are my speakers infront of me able to record?
 
Last edited:
SciencePerson said:
But what are the physics of why I can't find a way to make the screen where the wire that shoots photons also absorbs them?
The screen does absorb light that shines on it, but there is nothing in the screen that would record them. And even if there would, the screen does not have the necessary optics to make an image. Also, where is the point? Just add a camera at the side.
SciencePerson said:
Also has our civilization discovered yet and use this 2way speaker? And are my speakers infront of me able to record?
If you would add the required electronics to measure it, yes. Using two different devices is much more practical, as the microphone has to be sensitive to very small pressure differences while a speaker has to deliver large pressure differences.
 
SciencePerson said:
Also has our civilization discovered yet and use this 2way speaker?
Sure. I had a Radio Shack Electronics Project Kit in the 1980s (probably still have it...) that used a little earpiece as both speaker and microphone in different projects.
And are my speakers infront of me able to record?
If you hooked it up to a recording device properly, it would. But not as well as a microphone built for the task.
 
The old Ships intercom system (we had other NSFW names for it ) used the speaker as the microphone.
1980s_misc_systems_ickaa.jpg

Reproducer
The reproducer serves a dual function. When it is
the transmitting station, it performs as a microphone;
when it is the receiving station, it performs as a normal
speaker; amplification occurs in the calling

The design was passed down from BSG. :DD
Battlestar-Galactica
 

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