Well, cf this PC version that may serve as an example for doing real sonar work on Android,
http://stevetarzia.com/sonar/ On Oct 13, 6:20 pm, mjrtom <[email protected]> wrote: > haha yes that is correct. echolocation. i knew that...erm.. > > @blindfold, i was also thinking of a real sonar, which might be > somewhat possible, but just too inaccurate and difficult to implement > with the limited hardware available. > > and then just to clarify, i am NOT a developer. haha i wish i could > be. but im not. just thought i would throw an idea out there, and then > if anybody want to pick up the ball and run with it...be my guest. im > sure you would get many hits. > > cheers > > On Oct 13, 6:22 am, lbcoder <[email protected]> wrote: > > > He isn't wanting to make real sonar since it can't be done with the > > hardware available. He just wants to fake it (i.e. to TRICK i-phonies) > > by emitting a high frequency noise (submarine ping) immediately before > > capturing a PICTURE (using the camera) of whatever is there and then > > performing some mathematical transformations on the image to make it > > look hollywood-sonar-ish. > > > That should make a great party-app. > > > BTW: That would be ecHolocation. Ecolocation (aside from not being a > > word at all) would have to have something to do with locating > > ecological items, like forests, fish, and beavers. > > > On Oct 13, 5:25 am, blindfold <[email protected]> wrote: > > > > I suggest you first try to create a simple sonar obstacle detector > > > (distance detector), because spatial (i.e. lateral) resolution with > > > the phone's loudspeaker will be miserable (audible sound so high > > > diffraction, and no built-in cone for better audio directionality). If > > > successful, you move from there. Just doing the real-time analysis of > > > streaming recorded sound for possible echoes and their delays is > > > already tricky, ensuring that any variable delay artifacts are not > > > larger than the distance variations that you hope to detect (3 ms = 1 > > > meter at speed of sound, or 0.5 meter uncertainty if thinking of the > > > return path). > > > > Good luck! > > > > The vOICe for Androidhttp://www.seeingwithsound.com/android.htm > > > > On Oct 13, 10:38 am, mjrtom <[email protected]> wrote: > > > > > so i know that you most probably need some expensive equipment in > > > > order to make a sonar, or anything that would imitate ecolocation. but > > > > since we dont have that, and wont be getting it anytime soon, why not > > > > create an application that would fake sonar. > > > > > basically have the phone emit sonar bleeps, or bat-like clicks, and > > > > then use the camera to record whatever is happening. but display it > > > > the way daredevil sees.http://www.youtube.com/watch?v=EpOcO08dHvoat > > > > 0:28. (i know it's a bad movie, but thats the only example i cant > > > > think of right now). > > > > > so when people want to show off their new app, they can say: > > > > G1 DUDE: "look, my phone has sonar!" > > > > *bleep (image shows up in black and white/green/blue, and then fades > > > > away)* *bleep (image shows up in black and white/green/blue, and then > > > > fades away)* > > > > G1 DUDE'S FRIENDS: "whoa man you are so rad, i want to be just like > > > > you." > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
