141–150 of 158 posts
This is the definition of what a 'hacker' is, great read.
really cool. It looks pretty close to the ideas behind seismic imaging. https://en.wikipedia.org/wiki/Reflection_seismology
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one of those projects is feelSpace[1] which is a belt with vibrators giving you either a new compass sense, or tells you where to go (as a navigation system). [1] https://www.indiegogo.com/projects/feelspace-follow-your-gut...
In 1996 I was prototyping a belt with piezo transducers spaced around it with each doubling as emitters and receivers for a crude ultrasonic distance, and then each would vibrate at a higher frequency the closer the object came. Nicknamed 'batbelt' in-house. I dropped it after looking into insurance requirements and ADA compliance.
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People adjust to reversed image in a matter of weeks https://www.theguardian.com/education/2012/nov/12/improbable... It's not so far from that
It's no surprise to me that one would adapt over time. The article you link didn't mention any long-term study. I'd be curious to know how long it would take to replace one's vision to that of vertically or horizontally mirrored vision, in full . It's one thing to walk or drive a motorcycle, it would be another thing to handle situations requiring sub-second reflexes. Once you've managed to fully adapt to the new map…
Later on in the video, he mentions that having gotten used to the backwards bike, a regular bike was nearly impossible to ride until he adjusted to it again.
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Thanks for the link. I have wanted one of these belts for years! But I can't believe how expensive it is.
Whilst a commercial offering is probably quite expensive, it strikes me as the sort of thing you could do quite cheaply and easily with an arduino. I've actually been collecting the vibration motors from disposable electric toothbrushes to build my own belt; as they were designed to run form a single AA battery powering them should be easy.
The timing issue between the microphones doesn't surprise me. Multi channel soundcards require a single ADC that processes all of the channels in unison (same for the DAC). This is also why you can't just plug four stereo cards into a PC and expect it to make an 8-channel system.
Strictly, multiple ADCs are fine, but what matters is that they are all locked to the same sample rate clock, connected to each card either via a digital audio input (e.g. SPDIF) or a dedicated clock input (e.g. word clock).
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Isn't this exactly what sonar does? SOund Navigation And Ranging: https://en.m.wikipedia.org/wiki/Sonar
Not exactly. A sonar maps a surface using sound, while my camera looks at the sound itself. Think laser rangefinder on a scanner platform vs a camera.
I'd challenge the notion however that this isn't 'just' a passive SONAR device. Keeping the camera analogy, active SONAR use spread spectrum pings, much like the white light of a camera's flash. Your camera lacks a flash function, and its lens is maybe not yet as in focus as it could be.
If you did want to add a flash, you're likely a $0.02 piezo device and maybe $20 in other various parts (and heaps of numerical processing on a PC) away from having the ability to produce a nice 3D reconstruction of the physical scene.
If you get direct data capture going, please do post some raw data online. I'm sure others would have heaps of fun playing around with it.
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Not exactly. A sonar maps a surface using sound, while my camera looks at the sound itself. Think laser rangefinder on a scanner platform vs a camera.
Have you seen light field photography [1]? It would seem that your array is quite similar in concept. I'd imagine that getting images similar to those produced by various SONAR imaging technologies is a similar sort of deconvolution problem. If you're looking for textbooks or scientific papers to review, I think the field of tomography is also ripe with methods to explore here. I'd challenge the notion however that t…
One file per cell, 16bit integer samples. Stored row by row, 128 slices per frame.
Not sure where to post it, however - here it would be buried.
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Perhaps not as a regular income; but if funding for these projects is a limitation I bet crowdfunding would bring in funds to keep these posts coming :)
Random site idea. Could there be a version of Patreon, where not the author themself but instead the fans start the pledges. The author could choose to take the money or not, and could prove their identity by putting their bitcoin address in a tag on their website. So we could create a project on the site say "support sound camera posts from ribbonfarm.com" and money would be gathered for it, then when a new qualifyi…
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BrainPort sounds extremely cool. How does the brain decide to interpret them as visual input, though?
A human brain is very plastic. There is an app that can turn a picture from the phone's camera into sound real-time, and after a few minutes of training you can start to "see" the picture from listening to that sound. Fascinating stuff.
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A human brain is very plastic. There is an app that can turn a picture from the phone's camera into sound real-time, and after a few minutes of training you can start to "see" the picture from listening to that sound. Fascinating stuff.
What app is that, Artlav?
The thing basically scanned a line across the image, and produced sound based on the brightness. So, with your eyes closed you could quite easily imagine a basic shape of the image from the sound.
Maybe someone would recognize the description.