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J-Scope Oscilloscope update

VST, AU, etc. plug-in Virtual Effects discussion

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kryptonaut
KVRian
 
512 posts since 25 Apr, 2011

Postby kryptonaut; Tue Mar 25, 2014 3:20 pm J-Scope Oscilloscope update

I have updated my oscilloscope plugin J-Scope to V1.1
Image
32-bit Win VST 2.4

As well as some bug-fixes, features of V1.1 include:
  • One-shot trigger mode with optional pre- or post-delay
  • Linear, logarithmic and polar graticules with variable brightness
  • Cursor measurement of signal level, time, frequency, note
  • Stereo, mono sum, or mono difference as linear traces
  • L vs R or Sum vs Diff as X/Y Lissajous plots
  • Timebase from 1s/div (0.1Hz) to 0.1ms/div (1kHz)
  • Gain (Y) from x0.1 to x100
  • DC or AC coupled
  • Variable X-offset of trace(s)
  • Y-offsets of stereo traces individually adjustable
  • Adjustable trigger level, on positive or negative slopes
  • Display 'freeze' option
  • Adjustable phosphor persistence
  • 8 preset modes +4 user slots for quick setup
  • Fully featured donation-ware - if you like it, buy me a beer :)
Downloadable from http://jaggedplanet.com/vst/jscope.html
3ee
KVRAF
 
2855 posts since 8 Mar, 2006

Postby 3ee; Tue Mar 25, 2014 3:35 pm Re: J-Scope Oscilloscope update

thanks for the update! :)
will give it a try vs the s(M)exoscope.
FLWrd
KVRist
 
387 posts since 18 May, 2010

Postby FLWrd; Wed Mar 26, 2014 1:30 am Re: J-Scope Oscilloscope update

Looks great. I take it you're not planning a Mac/AU version?
tico-tico
KVRist
 
111 posts since 6 Mar, 2007, from Russia - Fishburg

Postby tico-tico; Wed Mar 26, 2014 3:43 am Re: J-Scope Oscilloscope update

Thank you! Now it's stable in Reaper. :wheee:
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kryptonaut
KVRian
 
512 posts since 25 Apr, 2011

Postby kryptonaut; Wed Mar 26, 2014 4:16 am Re: J-Scope Oscilloscope update

Yes, I fixed some bugs that were causing problems in Reaper and other hosts. I think it's pretty stable now, and has quite a comprehensive set of features.

Sorry, I don't have the development kit for a Mac/AU version, so it's Windows 32-bit only for now.
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Diego_C
KVRist
 
281 posts since 29 Dec, 2011, from Europe

Postby Diego_C; Wed Mar 26, 2014 6:18 am Re: J-Scope Oscilloscope update

It's a very nice one, full options packed, and I like that old style hardware look :)
Thanks for the update!
Cheers
ENV1
KVRian
 
994 posts since 31 Aug, 2011

Postby ENV1; Wed Mar 26, 2014 8:28 am Re: J-Scope Oscilloscope update

It looks good in silver too: :D

Image
User avatar
kryptonaut
KVRian
 
512 posts since 25 Apr, 2011

Postby kryptonaut; Fri Mar 28, 2014 1:27 am Re: J-Scope Oscilloscope update

Interesting alternative look! More like a TV than an oscilloscope, gives it a very different feel.
ENV1
KVRian
 
994 posts since 31 Aug, 2011

Postby ENV1; Fri Mar 28, 2014 5:41 am Re: J-Scope Oscilloscope update

Originally i was trying something more hardware myself, but i didnt get anywhere with the knobs, since the value readouts are right in the center. If i could have moved them out of the way, like i did with the sliders, i would have put the screenframe of a real oscilloscope and some silver knobs on it.


Anyhow, visuals aside, thought id let you know that while making the background for the screen ive noticed that your Y coords are slightly off. Details as follows.


- In Linear view, the positive voltage max (top) is 1.37, but the negative max (bottom) is only -1.36. To fix this, the bottom half would have to be extended by 1 pixelrow, (obviously), and another pixelrow to have a true center line again.


- The graticule center line (0.000mV) is currently 1 pixel too high.

Image


- The graticule center line of the top half of the screen corresponds to 675mV. In the bottom half however, 675mV is currently 2 pixels below the center line. There is also an unneeded dot between the numbers and mV in the textual readout while displaying integers.

TopHalf
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BottomHalf
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- The upper boundary of the second ring of the POL view is one pixel lower than the lower boundary. This indicates that the entire upper half of the rings is one pixel to small.

Image


And lastly i had also noticed a problem with the first line of the X axis. This line looks like it is glitching badly, since it behaves very erratically and doesnt seem to belong to the waveform itself. The issue could be solved easily and quickly by simply not drawing that line at all.

Image


Thats it for now, should i find anything else i will let you know. :)
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kryptonaut
KVRian
 
512 posts since 25 Apr, 2011

Postby kryptonaut; Fri Mar 28, 2014 7:47 am Re: J-Scope Oscilloscope update

Thanks for the info.

The centre-line of the graticule being 1 pixel off 0.000V was almost certainly a conscious decision (from long ago when the project started), because if they correspond exactly then the graticule hides the trace and you can't tell that the thing is working. But perhaps I could find a tidier solution in a future update, maybe make the graticule slightly transparent.

The first line of the x-axis is not glitching, it shows you what the trace is doing before it reaches the trigger threshold, i.e. before the timebase sweep has started. This can be useful information at times.

The occasional unnecessary dot in the numeric on-screen display is slightly annoying, and will also be dealt with in a future update.
chroma
KVRian
 
557 posts since 10 Jan, 2010

Postby chroma; Fri Mar 28, 2014 7:56 am Re: J-Scope Oscilloscope update

The first line of the x-axis is not glitching, it shows you what the trace is doing before it reaches the trigger threshold, i.e. before the timebase sweep has started. This can be useful information at times.


that's actually a very cool feature!
ENV1
KVRian
 
994 posts since 31 Aug, 2011

Postby ENV1; Fri Mar 28, 2014 8:21 am Re: J-Scope Oscilloscope update

kryptonaut wrote:The first line of the x-axis is not glitching, it shows you what the trace is doing before it reaches the trigger threshold, i.e. before the timebase sweep has started. This can be useful information at times.

Ah, i see. My mistake then. Forget i brought it up.

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