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08-03-2009, 06:33 PM
| | | | interesting slomo video of upright bass being played
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08-03-2009, 06:45 PM
| | Registered User
Artist:TC Electronic RH450 bass system | | Join Date: Jun 2007 Location: Fort Madison, IA | | | I loved that! |
08-03-2009, 06:50 PM
| | Registered User | | Join Date: May 2007 Location: San Marvelous, Texas | | Cool!  |
08-03-2009, 08:14 PM
| | Registered User | | Join Date: Feb 2009 Location: oakland, ca | | | whoa. had no idea it was so.. wavy. nice crisp footage.
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08-03-2009, 10:29 PM
|  | Supporting Member
Luthier: Bresque Basses, rep: Paulin EUB | | Join Date: Aug 2002 Location: Sydney, Australia | | | Wow. so good! |
08-03-2009, 10:40 PM
| | Registered User | | Join Date: Apr 2006 Location: Australia | | Quote:
Originally Posted by eucalyptus  whoa. had no idea it was so.. wavy. nice crisp footage. | I dont think it is???
It doesnt look right. If a string was doing that the vibrations would be nuts and the overtone series doesnt look right either.
Im not 100% sure how the camera works but maybe it records lines at a time rather than whole frames.
A visual trick of technology, I think. |
08-03-2009, 10:59 PM
| | Registered User | | Join Date: Dec 1999 Location: NYC | | | Dude! Take a look at your TV screen while you're playing the bass and check out the vibration patterns by looking at the TV through
your strings. The actual vibration patterns are much faster it's just that the way they intersect with the waves set up visually; it's like looking at still images that rotate one way while a slotted screen moves the other way (there's a word for that, any early film history buffs to step in?). You should take a look at an arrow in flight in time delay photography, THAT **** looks impossible....
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08-03-2009, 10:59 PM
|  | 'Woodworker - Witch Doctor - Luthier'
Owner/The Bass Spa, String Repairman/L & M Vancouver | | Join Date: May 2006 Location: Crescent Beach, BC | | Exactly JTJM. I noticed the same effect years ago when playing in front of the TV with the hockey game on. I think its the frequency of the refresh rate vs the string giving a kind of strobe effect. There's a similar thing happens when you see a CRT on screen - the video camera and the screen combine to make 'waves'.
Totally cool though!  |
08-03-2009, 11:34 PM
| | Registered User | | Join Date: Aug 2007 Location: emmitsburg, maryland | | | i once had a set of strings like that... |
08-04-2009, 01:14 AM
| | Registered User | | Join Date: Apr 2006 Location: Australia | | Damn look at em go. Attachment 135322
Last edited by JtheJazzMan : 04-03-2010 at 02:47 AM.
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08-04-2009, 05:35 AM
| | Registered User | | Join Date: Jul 2009 Location: Kalkara, Malta (Europe) | | | That video was pretty cool, I must admit. |
08-04-2009, 09:11 AM
| | Registered User | | Join Date: Oct 2005 Location: London, Ontario | | | That's very interesting to see all the little nodes of the harmonics series that are in the string and the way the energy from the finger shoots up and down the string. |
08-04-2009, 04:42 PM
| | Registered User | | Join Date: May 2009 Location: Burlington, Canada | | Yes, it's an interesting property of some cameras. The shutter blind moves vertically, exposing only a small portion of the film at once. As the shutter moves down, the string moves across the portion of film, creating what appears to be a diagonal string, even though in real life it's vertical.
This effect is called rolling shutter distortion. http://cameratoss.blogspot.com/2007/...er-effect.html |
08-04-2009, 06:03 PM
| | Supporting Member
Luthier: Bresque Basses, rep: Paulin EUB | | Join Date: Aug 2002 Location: Sydney, Australia | | | No i don't think its that.
Will Hughes explains it on the vimeo page:
"At the top end the 5D Mark II can be set to an exposure time of 1/1000th of a second for video (or possibly higher, I don't have mine on, atm to check).
This is the same as taking a single frame at 1/1000th -- except that it takes 30 frames, each exposing for only 1/1000th of a second.
A Double Bass has a frequency (according to the intertubes) of between 40Hz and 200Hz. Something vibrating at that range of frequencies is easily 'stopped' by something capturing at 1/1000th.
Want to test it? Go grab a regular SLR, set it to 1/1000th exposure time, get enough light, and shoot a double bass being strummed. You'll see the strings vibrating there.
The 5D Mark II in video mode is just taking 30 frames per second, rather than one. " |
08-04-2009, 06:07 PM
| | Registered User | | Join Date: Feb 2009 Location: Mountain View, CA | | | that was awesome
__________________ It don't mean a thing if it ain't got that swing. WTB: TC Electronic RH450 or 750. Quote:
Originally Posted by stepswork4me Objection! Douchebaggery, Your Honor! | |
08-04-2009, 07:27 PM
| | | | I'm going to try this on my cello. I doubt the effect will be as dramatic, assuming I even succeed at pulling this off. |
08-05-2009, 07:28 PM
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Vice President: Upton Bass String Instrument Co. | | Join Date: Mar 2002 Location: Warwick, RI & Stonington, CT | | | |
08-05-2009, 07:36 PM
| | Registered User
Brownchicken Browncow | | Join Date: Jul 2006 Location: Phoenix, AZ | | | not slomo.
but very cool.
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