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The Daredevil Camera

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Re: The Daredevil Camera

#101

Post by skrebbel »

Artlav wrote: post #18
Bromskloss wrote: post #11

Yay, a sound-field camera! I've been wondering if such things are made. Should I take the existence of this project as an indication that they aren't? The use case I imagine is finding what part of a machine is emitting a noise, much like how you would use a thermal camera for finding what part of it is running hot.

Not exactly unheard of, but quite rare. I found a company that made large arrays like that, but they seem to operate in near field, measuring only the sound volume. Imagine a wall of microphones next to a truck - you can tell which part of the wheel makes the sound. That sort of stuff. As for an actual "camera" that turns sound into an image - i've never heard of one.

I commented it elsewhere in this thread, but I a company called Sorama has been doing sound camera stuff for quite a while. Afaicr it's based on the phd dissertation of their CEO Rick Scholte so that name might yield some articles you might like.

Cool stuff!

Re: The Daredevil Camera

#102

Post by GIFtheory »

Animats wrote: post #98

Beam-forming microphones are well known. Here's a fancy ceiling-mounted one for video conferencing.[1] Here's the theory in Matlab.[2] And, most impressive is the surveillance version, the Squarehead Audioscope Acoustic Camera.[3] This, a 1m disk with 384 microphones, can pick out a single conversation in a noisy arena. There's a version which records all the audio channels in real time, using a big disk array. This…

In fact, there is a good chance your phone does this when it is in speakerphone: https://developer.apple.com/library/ios/qa/qa1799/_index.htm....

Re: The Daredevil Camera

#104

Post by xerophyte12932 »

While the actual curiosity-following-adventure is amazing, i think one other aspect to all of this that deserves a lot of praise is his writing. He managed to take us on his adventure along with him. Not every blogger pulls that off successfully.

Kudos to that!

Re: The Daredevil Camera

#106

Post by hjnilsson »

Bromskloss wrote: post #11

Yay, a sound-field camera! I've been wondering if such things are made. Should I take the existence of this project as an indication that they aren't? The use case I imagine is finding what part of a machine is emitting a noise, much like how you would use a thermal camera for finding what part of it is running hot.

Squarehead makes exactly this product: http://www.sqhead.com

It's used my military & events for drone tracking by sound, and concert venues for seeing where sound leaks out to the surrounding neighborhood. (Among other uses)

Edit: Their example screenshot is even showing an engine block overlaid with acoustic output of the components: http://static1.1.sqspcdn.com/static/f/1431009/18268254/13373...

Re: The Daredevil Camera

#107

Post by yread »

skrebbel wrote: post #100

A Dutch startup called Sorama has been selling this commercially for a while. It's very cool actually, they sell mostly to companies who want to make their hardware less noisy. It turns out that noisy machines are often mostly noisy because a relatively small number of parts are too flexible, not screwed on tightly enough, and so on. Track that down and you know where your low-hanging fruit is. A daredevil cam is exa…

Pretty cool, here is a live demonstration of their 1024-microphone camera https://youtu.be/dJ4NKq7trTA?t=210

Re: The Daredevil Camera

#108

Post by Jommi »

jo-m wrote: post #29
Bromskloss wrote: post #11

Yay, a sound-field camera! I've been wondering if such things are made. Should I take the existence of this project as an indication that they aren't? The use case I imagine is finding what part of a machine is emitting a noise, much like how you would use a thermal camera for finding what part of it is running hot.

There is a Swiss startup called Distran ( http://www.distran.ch/ ) which develops ultrasound cameras. They also have a spherical version which looks really cool and allows 360deg sight, unfortunately I cannot find anything about that one on the website anymore.

A finnish one too: http://www.nlacoustics.com/ Can someone with more expertise explain the differences between the many companies in this field?

Re: The Daredevil Camera

#109

Post by whatshisface »

therein wrote: post #95
fudged71 wrote: post #85

Artlav, this is an incredible project! I have an idea for you. You mention that you want to use a webcam so that you can "overlay" this information on top of an image. What if you could send it directly to your brain? There is a technology called Brainport[0], which is effectively a 16x16 grid of electrodes small enough to place on your tongue. By feeding electrical impulses through these electrodes, you stimulate th…

BrainPort sounds extremely cool. How does the brain decide to interpret them as visual input, though?

I'm pretty sure that would be mechanically impossible - the brain is very plastic, but touch-into-sight seems a little far for adult learning. Instead, you could expect this to feel more like acquiring a new sense - the experience reported by those who have used pager vibrators to give their body a compass[1].

[1]http://www.thinkgeek.com/product/f358/ (sorry, I couldn't find a better source - but the product description explains it)

Re: The Daredevil Camera

#110

Post by tess0r »

whatshisface wrote: post #109
therein wrote: post #95

Earlier quoted context omitted.

BrainPort sounds extremely cool. How does the brain decide to interpret them as visual input, though?

I'm pretty sure that would be mechanically impossible - the brain is very plastic, but touch-into-sight seems a little far for adult learning. Instead, you could expect this to feel more like acquiring a new sense - the experience reported by those who have used pager vibrators to give their body a compass[1]. [1] http://www.thinkgeek.com/product/f358/ (sorry, I couldn't find a better source - but the product descrip…

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...

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