DIY SYNTH VCF Part 2: Active Filters & Resonance
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- เผยแพร่เมื่อ 9 มิ.ย. 2024
- Support the channel: / moritzklein
In this series, I'm taking a detailed look at how to build an analog VCF from scratch. We're picking up the pace somewhat in this episode, since the topic is quite complex. If you need refreshers on certain concepts, here's a list of links:
Negative voltages, diodes & power supply: • DIY SYNTH PSU: How to ...
Voltage dividers: • DIY VCO Part 1: The an...
AC coupling: • DIY VCO Part 1: The an...
If you want to follow along - which I strongly recommend -, here's a bill of materials:
1x TL074 quad op amp
1x 100k linear stereo potentiometer (if you can find one, use a 500k - gives you much more range)
1x 100k linear mono potentiometer
2x 200k resistor
1x 100k resistor
1x 33k resistor
1x 10k resistor
1x 6k8 resistor
2x 1uF foil/ceramic capacitor
2x 10nF foil/ceramic capacitor
6x 14148 diode
Chapters:
00:00 Intro
02:28 Amplification & op amps
08:19 What is resonance?
11:25 Resonant filter analysis & build
15:43 Feedback control
20:37 Volume balance & distortion
24:05 Clipped feedback
25:55 Sound demo & outro - วิทยาศาสตร์และเทคโนโลยี
Electrical Engineer here, I wish you existed back when I went to school lol. Great job.
I'm learning more from this than my entire college course.
cs engineer here, with a lot of EE courses, ffs this is the best content ever
this channel is unreal. no fluff, all the necessary information, clear step by step diagrams, detailed explanations, BOM in description. thank you so much. Grüße aus Kalifornien!
I hadn't realized there was a BOM in the description until I read your comment. I think I have all the components already, but nevertheless that's some dedication by the author.
Best intuitive electronics lessons I have seen on YT, and I have seen many. You are niched into only synth nerds here. Clip out the pure electronics lessons and your following will be huge.
You make very good tutorials.
right back at ya!
MAKE MORE VIDEOS!!
Where have you been the last three years?
Hey!! One more to the list.
@afrotechmods Why you not making any videos
Never have i waited for a sequel this much before... Enlightened as usual.... Now impatient for part 3. Just brilliant.
me too,!!!
me too, this is the synth electronics I've always wanted!
Ich habe dieses und mehrere andere Videos gefunden, die Sie durch Glück erstellt haben, während ich auf TH-cam stöberte. Ich habe Mitte der 1970er Jahre mit Elektronik angefangen, also habe ich eine sehr gemischte analoge und digitale Sichtweise. Schade für diejenigen, die jetzt anfangen, dass in den 80er und 90er Jahren viel nicht triviales analoges Wissen in ein schwarzes Loch gefallen ist. Danke, dass du geholfen hast, es zurückzubringen!
This is really tremendous. The step by step slow build up is really valuable. I got some chips a while ago that can be used for a VCF but the circuit was too complex for me to get working monolithically. I feel like I can get something simple working first, which is always useful. The fact you are using the most basic parts is really useful because I already have them. Talking about the little choices about clipping resonance, how the feedback path is through the capacitor, this stuff is really useful as I knew resonance was feedback and I could sometimes get my non oscillating filters to oscillate with feedback, but it didn't sound like resonance.
yeah, breaking stuff like this down to the bare essentials is really the way to go if you want to get anywhere with circuit design i think!
I've been learning to test all my circuits individually before getting PCB's made. Sometimes I get too excited and hasty.
@@MoritzKlein0 life blesses you Moritz!
Moritz, I just want to express my thanks for your clear explanation and diagrams. You are a true-born teacher! Thanks for doing this series, it neatly brings together my interests in electronics and synthesizers!
Mate, this video and the last one has taught me so much in 1 hour. Lots of things clicked in my head and it just makes sense. Amazing work, and thank you so much.
This is hands down one of my favorite electronic design series. Great work wish I had this starting out.
I want to like this video TWICE! It's the second video from Herr Klein I watch! Monster clear information!
TH-cam should bring back the ***** five star ratings for videos instead of a simple thumb up or down!
I've been making audio circuits with op-amps for forty years now, and have never seen such a clear explanation of how they work. Thanks!
Great explanations @Moritz Klein! It makes me curious about building something myself!
This is awesome! The theory explanations as they're needed, the incremental progress with the oscilloscope insights, the sound of the filter, everything. Thank you for demystifying analog synthesis for the uninitiated!
This is one of the most intuitive explanations of electronics circuits I've come across so far - perfect for beginners, great for others wishing to review their understanding of fundamental circuits.
Thank you so much for all the crystal clear explanations applied specifically to audio. Like after each one of your videos, so many thinks are so much clearer for me now !
Man, this series is great, please make another hundred videos like this one. I am a casper electronics orphan.
will do!
I can not possibly describe how happy I am to have found your channel. Amazing tutorials. I’ve been wading through electronics building tutorials and theory for years and for the first time I finally feel like I grasp it. Also It’s nice to learn from someone who clearly has an ear for a beautiful tone. I’m amazed at the beautiful sound of this filter. Going to become a patreon supporter now! Byeee
Absolutely Amazing. Total respect for the simple way you explain something so complicated (for me anyway) and make it sound so simple. You are a genius.
Loving this series 👏👏👏👏 your explanations are so clear and concise!
In addition to seeing the final schematic, it would also be awesome to get a little closer look at exactly where you're hooking things up to the breadboard while you're doing it!
Regardless, I'm forever grateful for your content and can't wait for the next video!!
Another fabulous tutorial, I am SO pumped for Part 3 :D
i was hanging on every word, not wanting this video to end. This is SO helpful!
That sequence at the end sounds amazing!!!
Very nice. I was already familiar with all the principles here, but I've never seen as clear and concise a discussion of them. Even if just from the standpoint of op-amps which are a great building block for a LOT of analog electronics for any purpose. Great job!
10:11 My god what the resonnance does to the waveform when we look at tit with an oscilloscope is so fascinating and beautiful.
I always knew basic stuff like potentiometers beeing avriable resistors, what a diode is ect, but with your video I can finally understand basic synth electronic without asking too many questions to my engineer friend !
Cheers and love from France !
everyone loves looking at tit!
Appreciate all the time and effort put into making the videos. Good job.
I'd love if you included the "end"-schematic at the end of the video
noted for next episode!
maybe this will do for this episode: tinyurl.com/y4zjnhor
@@MoritzKlein0 thanks for this
Another great video. Really... Like, really for real. ;)
I've been producing electronic music for 25+ years. Initially with hardware, and then computers. Additionally, some 20 years of DSP programming, especially filters. in more recent years, I decided to pursue the proper DIY electronics side of things.
I say all this because, after so much exposure - learning and using filters as I have - this video provided one of the most amazing 'a-ha' moments that I've experienced.
Your explanation / thorough discussion of resonance made it click in a way that has eluded me up until now.
Thank you again for the time and effort you put in to producing the videos. Definitely time for me to become a proper patron - you've earned it x10000 imo
thanks, much appreciated!
I've watched so many tutorials about filter circuits and it's always been a bit confusing, but this is by far the most in depth simple and digestible explanation i've ever seen! so thank you so much. i can actually now design my own rather than just blindly follow a schematic!
Amazing explanation! Super clear breakdown of the different stages of the filter circuit! Thanks so much!
Thanks for the great visualization of resonance on the waveform, looking forward to more of your videos!
I never clicked so fast on the subscribe button while watching a tutorial like video as before. Great job well done and greetings from Germany.
Another stupendous explanation. Looking forward to the next installment!
You have awesome knowledge. Keep it up...
Perfect!!! This is one of the best audio electronic tutorials!! Bravo!
This series is brilliant, please please please keep it up. I've made the VCO on breadboard, just need to transfer it into stripboard. Then I will definitely be building this resonant filter!
Well explained, clear, demos and schematics are placed where they are the most needed, that's what I call a good video! thanks!
This is amazing tutorials on analog sound electronics. This reminds me to try finishing my DIY guitar pedal PCB schematic and launch it into production.
This is great, made me dig into my component draw for the first time in a while!
YOU ARE GOD OF ELECTRONICS! Your videos are exactly what I was looking for. Thanks a lot!!!
Fantastic. I learned lots, really looking forward to leason 3.
Super as always! Looking forward to the next several episodes!!!
Some of the best content of its kind on TH-cam.
This is so good. Thank you for sharing your knowledge in such a clear fashion!
These videos are great! thank you so much for them! puts so many different things together and in the context that i need.
The way you share your knowledge is such pleasant! I hope you like making your videos cuz we do! Thank you
This video has brilliance all the way up.
Thanks to you, my dream of building a synth may come true now.
Hi!
I come across your videos a bit late, but wanted to thank you for them! You explain things that looked super complicated in such an understandable way! And it's absolutely on the topic wanted to learn things!
Thank you so so much for that!
All problem clear from watch your videos. Thanks sir
The best OP-AMP Tutorial on TH-cam, Outstanding work Maritz!
This is the informative and quality content I search for, I immediately subscribed!!!!🤪
This is a great series, keep up the good work!
Now I get it why it's called resonance. These videos are awesome, thank you
Your 11th video. Consistently great. May your subs and patreons grow as rapidly as our knowledge.
Wunderbar erklärt Herr Klein!
Vielen Dank dafür!
beautifully explained. Thank you. More ideas to add to my synth project, while understanding what I'm doing and how it works. Thank you :)
Your have the best didactics for electronics that I have ever found. Thank you.
Brilliant channel! So helpful!
Endlich mal ne schöne, professionelle und keine nervige Umsetzung von nem DIY-Synth-Kanal. Weiter so, ich glaube du hast da ne gute Lücke gefunden;-)
Sympa la qualité de réception . Même avec un peu plus de distortion je seraix content de ce montage. 👍 merci Bertrand 🙏
You explain things very well!
Incredibly well explained!
Excellent. Beautifully clear.
I love this series!
Such a good channel! Keep it up!
That was so cool. Thanks man.
So grateful!! Thx for sharing your knowledge!
Very very nice! Thank you Moritz!
Your video is very inspirational besides of its knowledge sharing feature! Thanks!😃
Mr Klein you are a treasure.
The greatest series !
Amazing. Thank you so much. I'm a dyier from hell and this video made a couple of things way clearer. Keep up the good work!
Thanks a lot for this videos! mazing job and clear explanations
Hello and thanks for taking the time to explain these beautifully!
Even for someone who knows their way around op-amps, this presentation style is still useful!
Two additions if I may, I havent yet laid the circuit out on breadboard but from what I can see, I think that the stereo 100k pot should be of the logarithmic type and connected so that fully clockwise you get the lowest resistance. In that way you get a mostly linear sounding frequency response (our ear has a logarithmic response), with the highest Fc coming from the most clockwise pot position.
Also adding a 680 Ohm resistor in series with each side of the potentiometer should limit the highest Fc to around 23kHz, maximising the usable range of the potentiometer's turn.
These are just hunches at the moment, that I quickly scribbled on an excel sheet, I will test them out and report back.
In any way, they are minor stuff and do not in any way take away from your tutorial!
Great explanation!
great explanation as allways! thx
Wonderful tutorial!
Thank you so much for these videos. You are the Ben Eater of synths :-)
Very well done!
Thanks a lot! Can't wait the follow-up! :-)
lovely op-amp lecture! I didn't even know what is the VCF though.
love it, thanks for making this such of video
You have great diagrams for explanation
Great job!!!
really great stuff! I want to PCB this.
Very good explanations you are a great person
very helpful, thank you!!!
Great tutorial... thanks
Your channel is pvre gold
Love these videos! 🔥🙏
thank you!!!! Great explanations x
wow amazing channel! thank you very much!
Super Erklärung, jetzt ergibt vieles was ich gelesen habe mehr Sinn. Bitte danach VCAs 😁
This stuff is super exciting, I want to try and do my own wacky audio experiments
Beautiful
great videos! thank you and good Epiphany
good epiphany to you too
Thank you upload
Damn this thing suddenly sounds amazing
Amazing thank you