Category Archives: Art

How to install Wacom Bamboo Pen graphics tablet in Ubuntu Lucid Lynx 10.04

I recently purchased the promising graphics tablet Bamboo Pen (CTL-460) distributed by Wacom for about 50 Euros. I wanted to use it together with my laptop, building a portable drawing system, very convenient if you travel with your children. We usually take the laptop with us, since we transfer our pictures from the camera to the computer and cloud disk.

My laptop is currently running Ubuntu Linux 10.04 LTS, code name Lucid Lynx. I unpacked the Bamboo Pen tablet, plugged it into one USB port in the laptop and noticed it does not work out of the box.

No problem, just read through these easy-to-follow instructions and you will enjoy your tablet in about 10-15 minutes.

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Technology against vuvuzelas

I want be sincere with you: I must secretely confess that I hate those irritating vuvuzela sounds everywhere. With the advent of the FIFA World Cup and every single spot in the city being giant-flat-screen-crowded, you hear the vuvuzela tune way too often. I tried to watch the match without sound, kind of boring… I needed to get rid of vuvuzelas.

If you’ve never seen a vuvuzela, just look at the picture on the right or click here to listen to it. The fact is that I was looking for a way to kill that sound from my own TV. As many of you know, I have all my computers running on Linux. Also my TV runs on Linux (home theater solution on an old Athlon AMD box). So I started thinking about how to kill the humming 120dB sound that is transmitted live with every soccer match.

The solution I found is quite simple: vuvuzelas emit a B-flat tone, at a frequency of about 233 Hz. You need to kill not only that frequency, but also its main octave harmonics (frequency x2, x4, x8). That is: the audio software should filter the frequencies at 233, 466, 932 and 1864 Hertz and also their nearby frequencies, to included those de-tuned hell’s horns. This will automatically mute all “well-tuned” vuvuzelas.

The Linux world has already provided wonderful implementations of this concept:

An example of VuvuzeLautlos implementation:

Windows also got one filter:  Stardock have made an application which wraps our plugin and automatically filters your web browser’s audio output. Get it here.

Do you think I just exagerate and you absolutely love the sound? No problem, we will also get you some satisfaction: YouTube has included a Vuvuzela-include button on some videos. If you click on the football like button, it turns red and you can hear vuvuzela background tunes.

Anatomy of a stick figure

A couple of days ago I landed on Betsy Streeter’s site and found this very refreshing match-stick men drawing tutorial.

[slideshare id=3819979&doc=anatomyofastickfigure-100422123121-phpapp02]

It includes not-so-obvious tips to make your paper-based presentations on the whiteboard much more funny and effective, especially when showing user interaction.