Відео

well, it is a demo video about video synthesis modules so the main focus is about the resulting moving pictures.

@@syntonie1487 I personally enjoy this style! when people who aren't comedians try to be funny on streams/instructional videos I just shut them off. This style puts what is important front and center and I appreciate that.

I'm not super familiar with all the possibilities Scanimate offers/offered, though a ramp generator like Rampes, a video input like Entrée and an oscilloscope/XY display with a Z/brightness input makes a basic setup for scan processing. Then to get control over the width/height of the image, you need some control over the amplitude of the H and V ramps, here I'm using (soon to be released) Cadrans. To do X and Y positioning, you need an offset generator, so LZX Proc could be used, or LZX Matte + some kind of mixer, LZX Proc would also allow for manual control over the amplitude of the ramps. Finally, quadrature modulator like Animate used in this video will be helpful for rotation effects.

merci!

Thanks!! The patches shown here are a bit simpler than what I usually post online, though for demo videos I prefer to work with a relatively simple, 3U 84HP system to show what's possible with a somewhat reduced selection of modules.

@@syntonie1487 yeah i like this small system approach! makes it much easier to understand what's happening too.

🙏

Thank you! Video ramps have so many useful applications that it made sense to make a longer demo video than the previous ones, going through the different use cases.

that's normal, I'm still not super comfortable doing voice comments, I do when I record the videos, but there is a lot of hesitation, that would ask for a good amount of editing or even re-dubbing the video, so find it simpler to do text comments for now. And it's video synthesis after all 🙃

Thanks! Happy to hear you like Seuils, I think it can make a nice and compact setup with Rampes + Animate + VU007B (or any combination of processor + modulator + encoder more generally).

I haven't tried it myself, but got feedback from users successfully input video to Mempal with VU003, I got a rough diagram of how to connect things, write me an email and I can send it to you.

Thanks Robin! I like to start with simple, monochrome patches in order to show how the module works basically, and then build up from there to reach more complex shapes and color tones. To sum up the differences, VU002 is a inverter rectifier, whereas Solaire rectifiers doesn't invert the signal, also the bandwidth and overall quality of the rectification has been improved on Solaire. And for the difference with VU010, it is mainly the additional switch to select between average, add or subtract on Solaire mixers, and the mixers input B are normalized to ground which allows for a precise halving of the signal in AVG mode, and unity gain in ADD/SUB modes, whereas VU010 may produce an offset which results in unprecise halving, but this is also interesting. And of course, the normalizations between the rectifiers and mixers is where Solaire really shines. You can do a similar thing with passive multiples with your VU002/VU010, I was often patching them that way and that was one of the reason to make it into a single module :)

thank you!

thanks!

I really like the color shades it can achieve, after a couple years of using VU002, I kind of got bored of the color palette it produces when sending 3 outputs to the RGB inputs of the encoder. Of course, using a matrix mixer or a processor does help in getting different colors, though it's nice to be able to do it with Solaire only :)

I still have stock from the last batch, it can be ordered here syntonie.fr/produit/cbv001-circuit-bent-video-enhancer/ (choose CBV001 Standalone as the option). The CBV001S with acrylic enclosure shown in this video has been discontinued, main thing was to rationalize stock by producing only the CBV001 (eurorack module version), and the standalone option is the module built in a 3D printed enclosure and packaged with an external power supply. Else CBV001 and CBV001S had the exact same features, only the form factor differs.

@@syntonie1487 That's brilliant! Once I've moved house in a mnth I'll put an order in. Much obliged!

Unfortunately, the expander only works with Animate, main reason being that it asks for the quadrature core waveforms from Animate (the two triangle signals 90 degrees apart and the two square signals 90 degrees apart), also the core waveforms are around +4V/-4V and are scaled down to 0/1V during conversion into saw, trapezoid, shark and chainsaw. iirc, there was some discussion on the LZX fb group about a potential alternative version of DWO3 with quadrature outputs.

For now, only the assembled version will be available, main reason being that the circuit is pretty dense and made out of surface mount components. Maybe I'll offer boards with pre-populated SMD in the future, however the assembly is currently done in-house using an entry level pick and place machine, which has some quirks, so some boards needs rework and I only notice it until I build the through hole parts and test the module. Then a similar kind of effect can be done using LZX Castle ADC/DAC and Fox Shutter for the bitswap, both are available as DIY projects.

Totally understandable. Thanks for the alternative module choices, it's something I'll consider. Although I'll definitely be picking up the Animate!! Keep up the stellar work!

only way to 'sync' is to FM it with a H ramp?

congrats on the build! Yeah it doesn't have any sync input or a way to reset the waveform, as I wanted to keep it simple, also because it doesn't go up to video rate (max frequency is about 15kHz).

@@syntonie1487 ah, so its purely for modulation/animation. makes sense. ty for the reply!

It is based out of Saw Animator kind of circuit made for audio, it is usually multiple of this circuit that are used to phase shift a sawtooth/ramp signal and sum it with the original signal to make it sound "fatter". It works quite well for video, though it generates a little glitch where the two parts of the shifted waveform joins. As this is basically how it works: - the input signal is sent to a comparator, that generates a pulse out of the ramp - this pulse is summed with the inverted input signal - once the pulse is high, it adds an offset to the ramp signal, which shifts it upward, and "moves" when the falling edge of the ramp in time. - the reference of the comparator that change the pulsewidth will act on the amount of phase shift of the output waveform, and this same voltage reference is summed with the output signal to bring it back in the useable range (0-1V) Not sure if the text description makes a lot of sense, then you can check the circuit simulation linked in the user/build guide: tinyurl.com/yh9kbffj And yes, it does work with any signal, though the "phase shift" (which is more of a level shift) is effective only with ramp/saw signals, with triangle it does shift both ways from the center of the waveform (as shown around 3:20), should be similar with a sinewave iirc, then it doesn't do much with a square/pulse, as it is then summed with the comparator output which also produce a square. It does work with an external video signal too, giving a level shifting (which is then clipped at encoder stage), here I'm using two VU008 to process R, G and B channel of an external video source: instagram.com/p/CaemAWkl2h0/ instagram.com/p/Caj4eWJulX0/ About oscillographics, I tried it to modulate H and V ramps used to display an external video signal and the result is quite interesting: ua-cam.com/video/cofK5joB500/v-deo.html

@@syntonie1487 thank you so much for the details about the circuit! And for the links to the other examples. Do you know if the phase shift on the LZX Staircase works similarly?

I believe we already exchanged a bit on Instagram about the issue, but the fact that the signal goes through the module without any distorsion may mean that the level of the signal after the attenuverter/offset stage and before the differential pair that does the distorsion is too low, there is a voltage divider between those two stages, so maybe one of the value is wrong and the signal not big enough to be distorted? Also with a single oscillator, it's a bit hard to really notice the difference between a sine and triangle, so you can either mix/crossfade a H and V tri oscillator/ramp to generate a shape and see if it indeed soften the edge of the signal, or use the sine shaped V signal to modulate FM of an oscillator set to H sync and see if the modulation gives a sine. Hope that helps

It works from DC up to a few MHz for a use in video synthesis, so will work with audio rate signals, though the level might be more of an issue, as the module is expected to work with 0-1V signal. Line level audio might be fine, though it is centered around 0V and not sure if the offset will be enough. Then using it with 10Vpp might result in too much distorsion, resulting in a "soft square", the module features attenuverters, so maybe it is possible to attenuate the signal enough to get a sine, though I guess it would probably easier to just use an audio module dedicated to this.

I use a DSLR camera for recording and the monitor is a BVM1415P. You can try messing with both the settings of the camera (mostly the white balance) and the one on the CRT if it has controls (brightness, contrast, hue, saturation).