I hope you are saving all of your wonderful illustrations. They would make a fantastic book.
@cadikaorade8283 жыл бұрын
Reminds me of Forrest Mims' circuit diagrams
@jacobsteel3 жыл бұрын
@Baylie ϟymms me too!
@infiniteoffset3 жыл бұрын
Honestly I'm not even building diode ladder or anything related to synths, but I love watching your videos, because of how well the videos are made. Good job!
@rockpadstudios Жыл бұрын
yeah - very cool vid's
@boonedockjourneyman79793 жыл бұрын
I’m a traditional old fart. I’ve seen waves of creativity go by over 4 decades of professional life. You are going to be a star. The technology, the art, the dynamic art of the lights, and not least of all, the music, will take you far. I can visualize a Rammstein album cover, music video and melody based on your work. You should do some demos. And yes old guys listen to them. Metallica paved a path for us old guys years ago.
@onpatrolforthejuice22 күн бұрын
I love this series so much. I've been an analog repair tech and tester for a circuit company for years now but these videos have helped me grasp some fundamental understanding which I had been lacking all this time.
@OMNI_INFINITY Жыл бұрын
*Wow...ONE BREADBOARD???!!! I wasn't expecting that. Seems somebody is German (or maybe Austrian, but that's not so different). Planning to make that. Thanks!*
@WibblyWobblyBob3 жыл бұрын
Thank you for making this series. I have learned more from 2 evenings watching your videos than 40 years of fiddling with electronics. Your plumbing analogy is brilliant. I look forward to seeing many more tuturials from you.
@juppster5694 Жыл бұрын
Excellent presentation! I am an electronics engineer, and I love the way you come at your explanations: e.g. the changing resistances of the diodes with current, in the resonator amplifier feedback circuit, and how the stage-gain is reduced at higher amplitudes by 'straightening out the exponential curve'. Very detailed discussion - most (including me!) would have just said 'diode clamp' and not considered the detail! Very helpful for those of us who think we know it all already 😆 Thank you🙏
@warpigs3303 жыл бұрын
These videos are really helping to open the doors of analog electronics. I have been wanting to make a filter, and experiment with weird, maybe counterintuitive topologies, but didn't know where to start. The difference between the positive offset and negative offset, plus the placement of the resonance, there is a lot to tune there. I would be really interested in how to turn this into an all pass filter, I have been wanting to get some of those phaser sounds.
@MoritzKlein03 жыл бұрын
yeah that's why i decided to go with this instead of another OTA-based approach. much more room for creative tweaking! (also LM13700s are expensive.) i'll do a follow up on converting this into other filter types. eventually i'd also like to do a PCB layout when i feel the featureset is refined enough.
@warpigs3303 жыл бұрын
@@MoritzKlein0 the fact that this design doesn't use any fancy components means I will likely be able to design a pcb to be assembled by JLCPCB, and have them do most of the components.
@dentakuweb3 жыл бұрын
That was probably the most technical video yet but definitely the most musically useful device you have created yet.
@scrapeape3 жыл бұрын
Your demo song actually elicited some emotions in me (besides the standard "that sounds cool" excitement). That's an exceedingly rare thing. Great stuff.
@rolandtriton Жыл бұрын
Iam a mechanical engineer by major, the way you explained electronics made huge sense, I wish we had this 20 years ago, thanks for the good content
@sams_sekai3 жыл бұрын
Waking up to this on my birthday was a very good thing! Awesome explanation as usual!
@MoritzKlein03 жыл бұрын
happy birthday!
@kaloyankrastev6382 жыл бұрын
This filter works really well. The other day one opamp on mine apparently failed. It's cool how these analog devices can sound nice even with a major damage. The sound was similar to warm distortion on a guitar. I suspect the reason for the failure Is that I modified the CV input and might be causing it to go way high on voltage on the ladder. Thank you for your work again!
@256byteram3 жыл бұрын
That sounds great! Simple design too. I did one ages ago by taking a state-variable filter and replacing the two cutoff frequency resistors with boring old diode bridges, and basically doing the same positive/negative control voltage you've done across them. Worked really well too, plus you get low/band/high-pass out of it.
@finonomastropiero42613 жыл бұрын
Schematics pls jojo
@256byteram3 жыл бұрын
@@finonomastropiero4261 Demo and a schematic from when I made it -> kzbin.info/www/bejne/kGXSZISkf8mir9U
@fermiLiquidDrinker3 жыл бұрын
I already have a decent amount of experience with VCFs, but I still learned something from this video! Your design is honestly brilliant-it's like a further simplified Steiner-Parker filter; your filter doesn't use a differential ladder, so it'll be much more stable with regards to temperature. I'll probably try my hand at a mathematical analysis of this filter soon.
@MoritzKlein03 жыл бұрын
love to read what you come up with! also - amazing channel name!
@fermiLiquidDrinker3 жыл бұрын
@@MoritzKlein0 I'm busy on the Arp 4072 filter as of the moment, so it might be a bit before I getting to your filter. I'll let you know when I start on yours
@FahlmanCascade3 жыл бұрын
Your explanation of the circuit design is excellent.
@andrewlecouteurbisson72173 жыл бұрын
Excellent explanation and I really like the emphasis on the motivation rather than just describing the circuit.
@mathewthomas32383 жыл бұрын
I breadboarded this today and it sounds absolutely awesome. I want to build a euro module but I'm afraid your next version is going to be even better!
@OMNI_INFINITY Жыл бұрын
Any breadboard layout schematics? Been trying to decipher what is in the video onto a breadboard style layout. Thanks in advance, if can post a reliable diagram of that.
@22222Sandman222223 жыл бұрын
Wow, I've never seen better explanations for synth electronics. These definitely help me fixing some quirks in my DIY modular! Thank you so much!!
@why_do_you_care2 жыл бұрын
Being an electronics engineer, I can say that such sound and simple explanations for analog circuit design are tough to find. The logical flow and simple language helps one to be a 'part of the design process'.
@iamsushi10563 жыл бұрын
"oscillation salad" what a wonderful term!
@OscarUnderdog3 жыл бұрын
This is crazy cool, THANK you for making high quality detailed videos like this.
@novictim2 ай бұрын
Awesome acid jam ❤❤❤
@cadra4003 жыл бұрын
You, sir, are a fantastic teacher. Please keep making these videos. I hope you'll one day do a similar breakdown/comparison of other filter types, like the Moog transistor ladder, or late MS-20 OTA type.
@MoritzKlein03 жыл бұрын
transistor ladder is next on my list!
@johnsaunders65103 жыл бұрын
A lovely sounding filter.
@TediumGenius Жыл бұрын
I've come late to the game and your series here, but as a fan of ELP, Kraftwerk, and synths, I am absolutely fascinated! Your explanations are PRICELESS!!!!!! I am a hobby musician and have some electronics background, as well as a new scope I want to get to know, and your videos are PERFECT as a companion!! Very very well done, very consistent videos, and wow, I can't say enough good!!!
@DarioMoog Жыл бұрын
Thank you! You have great teaching skills. Can you make a video about OTAs and their use in MS-20 filter type?
@JagerMagic5 ай бұрын
Awesome, my first Synthesizer was a Korg Poly800.
@julian40353 жыл бұрын
Earlyer I know nothing of this now i know always! You are so good
@agiantalienforce3 жыл бұрын
Great tune. Would love a longer version
@devjock3 жыл бұрын
I'm fascinated by the fact that so far, there hasn't been a single sighting of expensive transconductance amplifiers. I'm sure they'll be used in the future, but it's nice to know there's a lot of good control possible with bog-standard opamps. Well done man. This series is truly inspiring.
@MoraFermi3 жыл бұрын
1. The "transconductance" op-amps would be needed if the filter's steering element was a BJT. 2. "Transconductance" amps are essentially amps pushing a set amount of current through the load... 3. ... which means you can do it with a "normal" op amp and some fancy feedback loop, if you don't mind part count explosion. 4. Internally they're current mirrors, so replacing them with discrete transistor pairs/trios would probably work too, for that old-school, wobbly sound.
@devjock3 жыл бұрын
@@MoraFermi Oh I'm aware OTA's are usually used in combination with a bjt, just loved the fact that there's a feeling of it being slowly worked towards. Parts explosion is fine in that case, because it facilitates the style of the video. More parts means less multi-function parts, means easier to wrap the mind around. Don't get me wrong, I do be liking the wobblies too, but I have a feeling this series is working towards more accurate modules later-on. Ideal diodes (Jim Patchel) in place of the split "dual"-filter elements would be a nice way to get the filter's "around 0v" area more linear (as well as it being a nice intro to waveshaping/folding). tldr; Yes :D
@OMNI_INFINITY Жыл бұрын
Part of what makes it nice is the synesthesia with that scope. Without the scope visuals in synch I'm thankfully generally over that sound.
@jakesnell7707 Жыл бұрын
You’re my favorite KZbinr after this!
@wuukaa90793 жыл бұрын
So much work in this video! Can't wait for the high pass filter!
@interference74803 жыл бұрын
Just did my homework and watched this again before the upcoming premier.. this sounds so good, I must have one!
@Asdayasman2 жыл бұрын
4:14 このディオです! The more polite Dio, after jumping out of the bushes and saying "boo" to surprise Erina on April Fool's.
@punman53923 жыл бұрын
Hey man I think I’m gonna build a pedal for my bass around this using an expression pedal for control. Super neat stuff
@ProjektNordpol3 жыл бұрын
There must be snow on your head, caused by your coolnes =) Can`t wait for more, Mr. Klein! Beste Wishes
@PeterWalkerHP16c3 жыл бұрын
We've all been waiting for this! Thanks.
@soulrobotics3 жыл бұрын
For being an excellent musician your are an excellent electronic guy!!. Hats!
@rpa2313 жыл бұрын
Just wanted to say your channel is amazing.
@davec83853 жыл бұрын
These videos are incredible. You do a fantastic job of teaching how these ideas work in a simple to understand way. I hope you have a great rest of your day
@37leonardo9 ай бұрын
I love your presentations and learning unthincable new in my analog knowledge and experience. Thanks!
@skriptico3 жыл бұрын
Yessir!
@davidvallejo91843 жыл бұрын
I liked the moving representation of the circuit on the simulations page, I always wonder how it flows, now it is clearer to me, you are the best!!
@jmannUSMC3 жыл бұрын
This will go down as the most approachable German engineering to ever exist 🤘
@scottlarson15482 жыл бұрын
I had no idea diodes could do so many things. Transistors get all the glory.
@MandelscapeDA7 ай бұрын
Love your channel... So now I need a comparison of various capacitors in a SEM state variable filter please!!!!!!
@nsomer2718 Жыл бұрын
I built a nano-amp scale ammeter using a 1N4148 diode. It works great! I use it in high voltage work to measure very small currents
@DollysplitBand3 жыл бұрын
Jeez man that kick sounds absolutely lush.
@diglet5533 жыл бұрын
Just discovered your channel and I love it! You've reawoken the DIY synth spirit within me 😁 Also, loved the sequence, sounds almost 303 like but not. That's the cool thing about diode ladder filters; they sound rubbery and acidic.
@josseman3 жыл бұрын
This is the first video I saw of you. Your talent is marvellous! Both good at explaining electronics and making music. Awesome! Greeting from the Netherlands
@christophschuermann79203 жыл бұрын
Hi Moritz, thanks for another great video! First off all: I would buy your drawings in an art gallery if they were signed by you :-). If you plan to build a stable and good "pro-version" in series, please consider the use of diode-arrays in one case. This allows good traking and temperature behavior and some are available in DIL or SIL-cases for easy prototyping. Cheers from Kaulsdorf, Christoph
@MoritzKlein03 жыл бұрын
great idea, thanks for the suggestion! i'm planning to do a proper PCB & panel once i've added at least a high-pass (and maybe a band-pass) option, so i'll probably use such an array then!
@ivand83933 жыл бұрын
Would you please comment the temperature dependency of the filter, because as you know most diodes have a negative temperature coefficient (about −2 mV/oC for silicon diodes). And the room temperature can be probably in range 15 oC to 30 oC and even more during the global worming ;-)
@MoritzKlein03 жыл бұрын
yeah ambient temperature will have an effect on the cutoff frequency. but afaik most filter designs don't compensate for this (unless you want to play it as a stable v/oct oscillator) because the effect shouldn't be that dramatic.
@nicholasroos36273 жыл бұрын
@@MoritzKlein0 I wonder how much affect it will have as it is the junction temp. Maybe less than expected based off the change in ambient T? Hmm.
@MoritzKlein03 жыл бұрын
@@nicholasroos3627 i'll try breathing vigorously onto my breadboard
@slick80863 жыл бұрын
Great Video.... now where is that dang bag of diodes!!
@MoritzKlein03 жыл бұрын
50-pole filter, let's go!
@ichadc3 жыл бұрын
Unrelated to the topic, but I like the way you drew all the "S" characters. Great video!
@wesleymays19313 жыл бұрын
Half S, half lightning bolt I like it
@neail54663 жыл бұрын
I was searching for this kind of analogue electronics explanations all over the internet.. you really granted my wish. I hope you will cover more in future. Thank you very much.♥️+1
@codehorror8076 Жыл бұрын
This sounds like something Burial would make. Good work man, learning so much from your videos.
@novictim2 ай бұрын
Awesome acid jam❤
@OMNI_INFINITY Жыл бұрын
I made some iOS apps with a VCS3 filter emulation and taming that filter from going straight to full peak was a process. I may cover the ear that has some tinnitus when testing that filter on a breadboard. It’s like the sound of something flying up into the sky and then suddenly vanishing from this simulation
@Qhotex3 жыл бұрын
Super series, Moritz! But I will suggest making a 0V reference line, so it gets a little more clear, how the waves are behaving.
@MoritzKlein03 жыл бұрын
you mean on the offset oscillations diagram?
@Qhotex3 жыл бұрын
@@MoritzKlein0 Yes, and the Odd/Even diagram as well. Thank you for this series. Really motivates me to do electronics, after a long period only programming.
@MoritzKlein03 жыл бұрын
@@Qhotex yeah true, in hindsight that would've been clearer.
@JAPANLOVESTAR11 ай бұрын
*URGENT!: I need to pack (including the electronics assembly area) to go to another country and I need to get that filter functioning properly before I do! I finished building it on a protoboard (with similar layout to a breadboard, although an extra rail on top and bottom and some on sides), but it’s still not functioning yet. Sigh. That was as much work as building a small building with the right tools seemingly. And I know a building would actually function properly. Sadly the filter hasn’t functioned at all yet seemingly. There was a high pitch sound from some points on the board when had the dual supply a little low. Sadly no potentiometer has done anything to make it output sound from what is seemingly the output yet either. Was SOOOOOOO MUCH WORK. Sigh…* I have REALLY learned that I should ALWAYS have PCB made when making any electronics circuit that isn’t as simple as most guitar pedals. And then also prefer to have a proper PCB. Anyway, here are the photos. Maybe there is something obvious simple and easy issue on it that will be easy to solve. The dual power supply is at maybe 11.87V. Note: Swapped the ground and other rail on the side with the row of caps. Didn’t install the audio ports yet, simply using wires straight to speaker and a 555 synth. Disregard the other circuit on left of the breadboard, as that is a multistable vibrator that isn’t connected. Thanks in advance for advising SOON on how to make it start functioning! Tested continuity all over the place, although didn’t go through maniacally methodically to confirm all continuity at every single point in that circuit. Underside has no bridged columns and that is a breadboard style stripboard. So it’s laid out based on the final breadboard schematic in that erika synths manual for that filter. (version 2.0 of that manual) Photos are on imgur. Sadly youtube was deleting any comments with imgur links, so change the [dot] to a ".", obviously: imgur [dot] com/a/KFrPShY*
@wedkarzkosma3 жыл бұрын
Good to see your channel grow up. Great video as allways! Have a nice day mr. Moritz
@TimSavage-drummer3 жыл бұрын
Less than a minute into your video and I've subscribed. I'm going to enjoy this channel!
@-prajna-95453 жыл бұрын
very good !! 水拉!!!
@akabomb3 жыл бұрын
The best video explaining the diode filter I've seen so far! The style of your videos is very charming and it helped me learn a lot. Thank you! My choice is pretty limited in terms of getting photoresistors too, so this filter would be a nice option.
@stephenyoung8960 Жыл бұрын
Keep these videos coming please :)
@sgrimm73463 жыл бұрын
Excuse the language, but this is Fking genius! To the others that also understand engineering, you know what I mean......Carry on please. I just had to drop my 2 cents.
@desmotsdesfaits57953 жыл бұрын
once again great great great video!
@6alecapristrudel3 жыл бұрын
33:44 "watch what happens as I turn it up....the output dies instantly" output: *_demonic HF screeching_*
@MoritzKlein03 жыл бұрын
really? i don't hear anything - might be too old already
@6alecapristrudel3 жыл бұрын
@@MoritzKlein0 Nah, the audio went quiet, but the waveform on the scope became a solid bar. Like a high frequency oscillation seen with a slow timebase.
@MoritzKlein03 жыл бұрын
@@6alecapristrudel ah gotcha! yeah true, it looks rather alarming!
@jimmygervaisnet3 жыл бұрын
Sounds great! I just don't understand where the CV input comes in...
@MoritzKlein03 жыл бұрын
check 28:36
@jimmygervaisnet3 жыл бұрын
@@MoritzKlein0 oh! I thought that was the sound input lol thanks
@dgp14983 жыл бұрын
lovely filter!
@FilipMilerX3 жыл бұрын
Next step could be the differential configuration with transistors as diodes like in TB-303.
@crazyirishman1213 жыл бұрын
That Demo was on point.
@flaminggarlic3 жыл бұрын
I added voltage control to the resonance with a simple Santana JFET VCA, and added a non inverting summing stage to combine the CV and Resonance pot voltage, with clipping diodes to constrain the voltage to a range between roughly 0V and 5V. I had to flip the resonance input amp to an inverting configuration since the VCA is inverting the signal, and I didn't do the actual math to change the gain, I just guessed, but it seems to be pretty similar resonance. Here's a link to the falstad circuit: tinyurl.com/yz9nl6fo
@MoritzKlein03 жыл бұрын
looks good!
@alexwood0205893 жыл бұрын
I really like the technique, it's not something I've come across before, and I can't wait to try it out! At 26:11, I'd have given the non inverting stage the gain and made the inverter unity gain. That way, you're not amplifying the noise from the first stage with the second.
@MoritzKlein03 жыл бұрын
this would make it much more complicated to get the resonance amp's gain right unfortunately!
@hlw80513 жыл бұрын
Very clear appreciate the content
@BUCKSINSIX693 жыл бұрын
Moritz, you are my new hero. WOW... just wow
@LaurentLaborde3 жыл бұрын
why nobody ever explained this to me before ? "the increase in current will be exponential" "you can think of it as a voltage controlled resistor". it make it so easy to understand... wtf ?!
@ciro_costa3 жыл бұрын
i thought you'd end up having some noise problems because of the amplification but it turned out fine! amazing video as always!! if that wasn't the case i'd suggest zener diodes the ones rated to 3.6V would require a lesser reduction of volume (if i got the workings of the circuit right) so you'd have a greater separation between the signal and the noise floor during the amplification stage.
@MoritzKlein03 жыл бұрын
might be a good idea to try this since the output stage definitely is susceptible to picking up noise. you can keep it to a minimum by using proper decoupling & keeping the big gain op amp as close to the PSU as possible though!
@SkunkBunk3 жыл бұрын
This is awesome! Thanks for being so thorough in your analysis.
@makarocket3 жыл бұрын
this is an awesome demo on how a diode filter works!! thank you!!
@iswimwithsharks2 жыл бұрын
Loving all your videos, really helpful in understanding signal flow and how everything works, appreciate your sharing of knowledge dude!
@OMNI_INFINITY Жыл бұрын
Recommend a followup video to explain "Bias Current & Trickery" section more thoroughly. Thanks in advance for removing any of the "trickery" from that part.
@samcarswell98903 жыл бұрын
This was a really, really great video and explanation. Thank you for making these!!
@soejrd249783 жыл бұрын
Looking forward to the follow-up
@TPItsMe3 жыл бұрын
Just letting you know the time used to set up the succulents was not wasted 😂
@MoritzKlein03 жыл бұрын
it's only one succulent so the effort there was minimal
@tillorrly11283 жыл бұрын
Thanks for the reminder to buy some succulents.
@tourtravel2624 Жыл бұрын
Very good understandable knowledge. I saw your videos dont have any youtube monetization advertisements, you should activate it via settings
@MoritzKlein0 Жыл бұрын
i keep that turned off deliberately, since i got a decent number of people supporting me on patreon.
@tourtravel2624 Жыл бұрын
@@MoritzKlein0 👍
@ghlscitel67142 жыл бұрын
I think I never needed a Diode Ladder Filter. But it sounds interesting. However I built quite a few diode capacitor ladder high voltage power supplies.
@tuff_lover3 жыл бұрын
aphex twin would love that one, very clean sound
@fruitpowerofeden-20223 жыл бұрын
yet another excellent tutorial. Thank you.
@joelkulesha82843 жыл бұрын
Thank you so much for making these! Such fantastic help!
@OMNI_INFINITY Жыл бұрын
*There is a lot of hidden filter modulation to make that quack like that? Seemed to be a surprisingly large jump at a certain point in that video. I've built an emulation of that before and seems as though it didn't sound like that before adding envelopes to the filter. *
@r51f203 жыл бұрын
Hi from Russia! You make great content, please create video about your rack modules from 3:20. I'm started to build my own rack and cant choose what I want in it.
@MoritzKlein03 жыл бұрын
you mean like a tour?
@r51f203 жыл бұрын
@@MoritzKlein0 Yes, I think an in-depth tour would be helpful to understand what you are using.
@obscurer189810 ай бұрын
awesome. i wonder if you ever might do a video about a diy spring reverb? (or just a verb in general lol)
@MoritzKlein010 ай бұрын
it’s on my list!
@magiceireann3 жыл бұрын
This is wonderfully explained Moritz, thank you. Subscribed
@JenkemFactory2 жыл бұрын
I'm very surprised the resonance sounds so good and squelchy when the feedback isn't inverted! It's my experience that positive feedback should have the opposite effect and make the filter sound really woofy.. if that scetch is correct I must be missing something..
@JenkemFactory2 жыл бұрын
I think i got it, is this due to the capacitor and diodes behaving like a highpass filter for the feedback? Still amazed of how good and tight it sounds, great low-end retention at high resonance 👍
@MoritzKlein02 жыл бұрын
yeah it's about the way the feedback is mixed in with the input signal. the MS-20 filter does it the same way!
@tedvanmatje3 жыл бұрын
Awesome presentation and impeccable english! Thanks for posting :)
@joelandersson34743 жыл бұрын
Would love to see you producing some music with all the tools you're creating :)
@OMNI_INFINITY Жыл бұрын
The machine is the art at that depth. Why make a finite pattern when can make a machine that makes any pattern?
@carneeki5 ай бұрын
A korg poly 800? I have my father's old mkii of that synth!