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Scroll Slow. Have Fun

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31–40 of 148 posts

Re: Scroll Slow. Have Fun

#31
post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

My monitor also makes a high pitched noise. Sony KDL-32EX400 (using HDMI connection). Neither of my other monitors produce the noise (VGA, & Displayport connections if it matters)

Re: Scroll Slow. Have Fun

#32
post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

Same sound here - only on my external monitor though, not on my MBP's own screen.

Re: Scroll Slow. Have Fun

#33
We just produced a children book with this technology in Germany:

http://www.amazon.de/Ulff-Backenh%C3%B6rnchen-eine-irre-Verf...

Will be released in the next 4 weeks. It was fun to make, but also quite nightmarish in the technical details. It is a hell of work (we have roughly 30 animations in the book, very small and very big ones). It requires extremely accurate measurements for the grid-foil and a sophisticated workflow and color management.

In the first run, the printer forgot to fixate the ink on the grid-foils with a protective layer, so using the foil would smear the black color.

Re: Scroll Slow. Have Fun

#34
post #9

For wanting to look more into the math/art behind this, they're based on Moiré patterns - http://en.wikipedia.org/wiki/Moir%C3%A9_pattern

would also relate this to the technique of interlacing[1], which I find in this case even more relevant than the very special application of a moire pattern. Just that this one has more than the usual two fields.

Basically you're moving an interlaced still image composite made from multiple frames of an animation under an stripe mask revealing only the current frame, where the ratio of stripe to black equals the number of frames.

Lenticular prints[2] work in the same way, but instead of a mask the lenses blow up each line to full width (much like an optical equivalent to line doubling video deinterlacing), trading resolution in one dimension for encoding multiple frames.

[1] http://en.wikipedia.org/wiki/Interlaced_video

[2] http://en.wikipedia.org/wiki/Lenticular_printing

Re: Scroll Slow. Have Fun

#35
post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

"Some surface-mount capacitors exhibit acoustic noise when operated at frequencies in the audio range." [1]

I see that this screen has alternating black and white lines. I count 43 black lines on my monitor. Assuming 60 Hz refresh rate, that is 2580 Hz in terms of the pixels being off or on, which is a perfectly audible frequency. Even with 120 Hz refresh rate, that would be 5160 which is still easily audible. Without knowing anything else, I guess that there may be a capacitor somewhere that is charging and discharging along with the brightness of the screen as it is refreshed from top to bottom, which is causing it to flex in a way that produces an audible noise.

I am curious is Aardwolf can produce different frequencies by varying the width (and therefore the quantity) of black and white lines on the screen. If so, you should be able to play some music on it.

[1] http://www.edn.com/design/components-and-packaging/4364020/R...

Re: Scroll Slow. Have Fun

#36
post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

Does this work for for anybody on MBP or Retina displays? I tried mouse-wheel, trackpad and scroll bar, can't hear anything. anybody?

Re: Scroll Slow. Have Fun

#38
post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

Can confirm same high pitched sound on 27 iMac.

Plus: open developer toolbars, find styles for .bars, change margin-bottom and sound changes frequency.

Re: Scroll Slow. Have Fun

#39

We just produced a children book with this technology in Germany: http://www.amazon.de/Ulff-Backenh%C3%B6rnchen-eine-irre-Verf... Will be released in the next 4 weeks. It was fun to make, but also quite nightmarish in the technical details. It is a hell of work (we have roughly 30 animations in the book, very small and very big ones). It requires extremely accurate measurements for the grid-foil and a sophisticated w…

When I was a kid, we had a similar book (Magic Moving Picture Book). It was a lot of fun.

Out of Print, but still on amazon

http://www.amazon.com/The-Magic-Moving-Picture-Book/dp/04862...

Hope you get yours working well.

Re: Scroll Slow. Have Fun

#40

I am lazy and (apparently) suck at scrolling smoothly, dropping this in the console worked well :) setInterval(function() { window.scrollTo(0, document.body.scrollTop + 5) }, 60)

That didn't work in Firefox for me but this one does:

setInterval(function () { window.scrollTo(0, document.documentElement.scrollTop + 5); }, 60)

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