Youscope!

jaycee · 13th August 2007, 07:36 PM

OK, so this might be a bit offtopic for this board, but it's very cool.

The "other" hobby for me is programming, and one of the main things about programming is the "demo scene" - basically where teams of guys program cool graphical effects demonstrations on computers...

... or in this case, an oscilloscope!

http://www.youtube.com/watch?v=s1eNjUgaB-g

I guess many people have seen things like Lissajous figures generated on 'scopes, but this is very clever.

Nordic · 13th August 2007, 08:13 PM

bIG demoscene fan here... cool one!!!!!!!

culture · 13th August 2007, 10:59 PM

ehh WOW!!!!

darn pretty cool!!

neutron7 · 14th August 2007, 04:56 AM

where can you download the wav file?

you could make a special wav file for testing soundcards with so you can see problems visually.

jaycee · 14th August 2007, 12:15 PM

http://kapsi.fi/~jpa/stuff/other/youscope-wave.flac is the wave data. This is a FLAC file so you need a player that will play it... winamp does but i think it needs a plugin.

http://flac.sourceforge.net

edit: oh, dont listen to it... especially not at high volume!

MaxS · 14th August 2007, 12:57 PM

Hello Sirs,

Foobar do it. No need to get a plugin.

Pano · 15th August 2007, 11:14 AM

Most amazing! What's the setup? 2 sound cards? Or is it just 2 channels?

jaycee · 15th August 2007, 11:36 AM

One soundcard is used to generate the display... one channel controls X and the other controls Y. On the Youtube video, I guess the soundtrack is dubbed in afterwards.

I've also tried this under a software X-Y scope, specifically the one in GoldWave. It works but looks very flickery as there's no phosphor persistence to stabilise the image.

OzMikeH · 16th August 2007, 10:06 AM

I just tried it out. I had an earth loop that made things a bit fuzzy. A dark room helps.

Strange watching your headphone amp clip into a square when you turn the volume up too high.
I had trouble getting nice clean corners on the cubes, even on DC coupling.

This would be an interesting way to test amplifiers, run this through the amp into 8 ohms and look at the clarity of the CRO image.

13th August 2007, 07:36 PM	#1
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Youscope! OK, so this might be a bit offtopic for this board, but it's very cool. The "other" hobby for me is programming, and one of the main things about programming is the "demo scene" - basically where teams of guys program cool graphical effects demonstrations on computers... ... or in this case, an oscilloscope! http://www.youtube.com/watch?v=s1eNjUgaB-g I guess many people have seen things like Lissajous figures generated on 'scopes, but this is very clever.

14th August 2007, 12:57 PM	#6
MaxS diyAudio Member Join Date: Mar 2006 Location: France	Hello Sirs, Foobar do it. No need to get a plugin. __________________ Ca marche pas ! Tu ne l' as pas branché non plus ....

15th August 2007, 11:14 AM	#7
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Most amazing! What's the setup? 2 sound cards? Or is it just 2 channels? __________________ Take the Speaker Voltage Test!

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13th August 2007, 08:13 PM	#2
Nordic diyAudio Member Join Date: Sep 2005	bIG demoscene fan here... cool one!!!!!!!

13th August 2007, 10:59 PM	#3
culture diyAudio Member Join Date: Oct 2006	ehh WOW!!!! darn pretty cool!!

14th August 2007, 04:56 AM	#4
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	where can you download the wav file? you could make a special wav file for testing soundcards with so you can see problems visually.

14th August 2007, 12:15 PM	#5
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	http://kapsi.fi/~jpa/stuff/other/youscope-wave.flac is the wave data. This is a FLAC file so you need a player that will play it... winamp does but i think it needs a plugin. http://flac.sourceforge.net edit: oh, dont listen to it... especially not at high volume!

15th August 2007, 11:36 AM	#8
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	One soundcard is used to generate the display... one channel controls X and the other controls Y. On the Youtube video, I guess the soundtrack is dubbed in afterwards. I've also tried this under a software X-Y scope, specifically the one in GoldWave. It works but looks very flickery as there's no phosphor persistence to stabilise the image.

16th August 2007, 10:06 AM	#9
OzMikeH diyAudio Member Join Date: Mar 2007	I just tried it out. I had an earth loop that made things a bit fuzzy. A dark room helps. Strange watching your headphone amp clip into a square when you turn the volume up too high. I had trouble getting nice clean corners on the cubes, even on DC coupling. This would be an interesting way to test amplifiers, run this through the amp into 8 ohms and look at the clarity of the CRO image.

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