41–50 of 158 posts
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.
That's a very sensible use case. I was thinking more like, super-trippy live music visuals.
Nitpick; Duga 3 was never built. The one near Chernobyl is Duga 1.
This is the definition of what a 'hacker' is, great read.
Right on. Reminds me of Richard Feynman or Steve Wozniak, the way they just casually talk about taking things apart and putting things together while following a curiosity on an adventure. This is representative of the sort of ethos that drew everyone here in the first place, I think.
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.
The use case here is being able for a diver or ROV to see in murky water
[0]http://www.soundmetrics.com/image-gallery [1]http://www.apl.washington.edu/programs/z_DIDSON/Pages/LIMIS....
Earlier quoted context omitted.
Isn't this exactly what sonar does? SOund Navigation And Ranging: https://en.m.wikipedia.org/wiki/Sonar
No. SONAR sends out an ultrasonic ping and times the response of its echo to get a distance. This project is similar in that it involves visualization from audio, but apart from that, it's quite difference. This is the ability to see a sound. To derive the positions of arbitrary sounds in a viewing plane, and render it like you would a picture or video.
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.
Well as it happens there are special sonar cameras out there capable of providing real-time video images[0][1]. The use case here is being able for a diver or ROV to see in murky water [0] http://www.soundmetrics.com/image-gallery [1] http://www.apl.washington.edu/programs/z_DIDSON/Pages/LIMIS....
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.
Awesome project! Nitpick; Duga 3 was never built. The one near Chernobyl is Duga 1.