VIDEO: oscilloscope (edited post)

just thinking I would / could need an Oscilloscope on my desk … for shits and giggles … just have a visual representation coming from a AUX send from my mixer …

we are all crazy sound professors, aren’t we?

Well this isnt gonna be cheap unless your lucky and get ones where all the probes work ect ect ect ect
Or if you have an IPAD or IDevice there are plenty of good cheap oscilloscopes

Cathode Ray all the way !
won’t get anything like this with a digital scope

5 Likes

that is a sweet video! … exactly what I have in mind!

btw

there are oscilloscopes on ebay for less than 50 coins … i would just assume they are analog and would work with a send aux from a mixer …

cmon guys… more comments please!

Yes. Any analogue scope should be cathode ray. Generally It will have 2 inputs, X-axis and Y-axis. They video above is making use of x,y coordinates to “draw” images on the scope. These are known as Lissajous curves.

For instance, if you feed both the x and y inputs a sine wave of the same frequency, and then phase shift one of the signals 90 degrees, you can draw a circle on the scope. With small variation in phase, wave shape, amplitude and frequency you can quickly get some awesome results.

I was reading the blog of the guy who made the video recently. Very interesting. No other visual effects used. Just processed audio fed into the scope using Ableton. Even has a soundcloud link to the raw audio they used. I’ll post it later when I find it again.

I’ll post some other cool shit I was looking at about Just Intonation and Lissajous curves on oscilloscopes too

3 Likes

very nice!

very informative Cocker!
thanks for that … are you using a oscilloscope? Y / N ? why so, why not?

X/Y stuff is great. you can use the A4 CVs to sequence animations:

can’t go wrong with a 'scope.

2 Likes

hi Void …

thanks for the VIDEO!

is that yours?

how does one feed the oscilliscope?

will a AUX Send be sufficient? what sort of cable to you need?

you say I could use the A4 CVs … but I want a graphical representaion of what is coming out of my speakers … that would be esthetically more pleasing to me :stuck_out_tongue:

thanks for all info, thanks again for posting the vid …

(gonna post an OT update wishlist (to make the OT dev’s scream off course)

OT UPDATE REQUEST : Oscilloscope in Display

:stuck_out_tongue_winking_eye:


I have a mini scope in my modular. The Dave Jones O’TOOL. It’s very useful but you need the real deal for any of this awesome stuff. Here’s a vid with Lissajous and Justonic tuning. Pretty cool

1 Like

[quote defaultattr=""]X/Y stuff is great. you can use the A4 CVs to sequence animations:

can’t go wrong with a 'scope.[/quote]
Nice stuff Void. What kind of scope is that? Was it pricey? Cheap?
Must get one myself
Here’s the blog of the lads that did the Clark video. Interesting stuff. Includes the raw audio they fed into the scope
http://adoxo.co/Phosphorfordummies

1 Like

been looking at getting one for years now…feeling like there’s still something missing on my desk :slight_smile:
not sure if you fancy some usb stuff, have a look here, cheaper than the big guys but then you won’t have a dedicated cathode screen to look at :stuck_out_tongue_winking_eye:
well, actually, you could get one of this old screen but it won’t be like looking at the real thing, i know

was an old one which I got from a friend…
this I think: Oscilloscope HM512 Familie Equipment HAMEG GmbH, Frankfurt, build |Radiomuseum.org
also had a lot of fun doing this X/Y thing with audio L/R from the A4… but never got beyond noodling…

that Clark video is nice… would be great when one could do this live…
with a laser! (scope screens are small…).

dunno…

  • mess around with stuff to get good graphics
  • record the audio into OT
  • trigger & mangle animation live on OT… profit!

(crap… think I just talked myself into an OT)

:smiley: i’ll need stop reading messages from this thread or i could end up in the same situation :stuck_out_tongue_winking_eye: :smiley:

hi folks… thanks again for all info …

“whats missing on my table” yeah … exactly… can you imagine how fucking cooool that would be … i gotta get one…

but the final question is still …

how would I reproduce my live frequencies on the screen?

plug the thing in the thing. … but where?

that modular oscilloscope sure looks nice too… but I told myself to never start with modular due to GAS danger :stuck_out_tongue:

guga: since we are both in berlin, I let you play with mine on a play date :stuck_out_tongue:

void: i let you mess around with my OT (you can come over when guga is around :ppppp )

An old scope will most likely have BNC inputs. Some kind of adaptor or custom cables should do the trick




1 Like

thanks Cocker!

last thing:

I assume I would want to have a 3 pole Oscilloscope (which would come with 3 cables)

Worth noting that the more impressive examples in this thread (wow on that clark video!) are specifically made signals for the scope…not just a visualisation of the music.

so with just an aux send, you can send that to one input (X) and then ground to the other (Y) and get a classic oscilloscope view of your waveforms in realtime.

You can get some sort of circle with left and right channels, but again it won’t be anything like signals developed specifically for a scope.

Mushroom 'scope:

Regarding analogue oscilloscopes, the Tektronix 2465 has a good reputation and is not too expensive if prepared to wait. Search EEV Blog for more detailed info.

2 Likes

hi jeffe

thanks for your post!

this is what I was afraid of, not having these EEEPIIIC drawings on the screen … sad but I must stay realistic …