How do VCAs work with ADSRs?
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- I've been asked a few times now why you need a VCA along with an ADSR or other envelope generator and it made me realize that people might not know how those two pieces work together, so I thought I'd tackle that in a patching video.
this was really solid. ultra clear & as thorough as can be. thanks so much.
Glad it was helpful!
Glad I found this video. 👏🏾
Thanks for this. I appreciate your comment that some of these things are just "assumed knowledge". It's these really fundamental things that are often missed. So many videos talk about what a module can do without showing a clear and basic patch. Super helpful!
Good concise explanation. Don't know why I watched this lol 😭 looking for a good adsr module
"Audio valve"? This immediately reminded me of remote cut-off pentodes, where transconductance (and gain) varies a lot with control grid bias voltage. These tubes were used in RF circuits for automatic gain control to increase the signal from weak radio stations while not letting the strong ones overdrive the demodulator and audio frequency amplifier. Basically, a dynamics compressor, but for radio frequencies.
Very educational. Thank you. Now I must go buy more things.
My work here is done!
Exactly what I needed to understand Envelopes and VCA. Now I know how to „really“ work with the modules I have :)
Thanks Jeff, described simply and set at a good pace 👍🏼
Awesome job! Clear, concise, and very educational. Thanks for the notes, the diagrams, and the visuals. Hoping to see many, many more videos from you.
Very concise and to the point. Thank you.
excellent video thanks Professor
Brilliant video man,,,explained loads for me....
Days.
Multiple days I have searched for an explanation of the ADSR/VCA relationship that made sense to me.
Great stuff. Thank you. Now, as the other guy said, off to buy more stuff.
I'm super glad it helped! It seems to be something that lots of people get hung up on.
Thank you! I really needed this. 👍
bravo!! super helpful!!
thanks bunches!!
Great Video, Thanks for this!
Wow this is exactly what i needed to hear..Thanks
Thanks for being so clear!😎
ya, just perfect.
Now I get it :) Thanks, quality video !!!
Huge help for this euro newb
Very clear explanation.
I have some questions.
1. What parametes does the keyboard of a synthesizer change? The frequency of the oscilator? The voltage rhat controls the VCO?
2. If there is only one oscilator to generate que frequency, how does the system works to generate chords?
3. How many "channels" are there on the sequencer and what parameter does the sequencer change? The voltage control to be aplied on the modules?
Thank you!
Hey, thanks, I'm glad it was helpful. To answer your questions:
1) It's both. Playing a note is going to send a different control voltage to the oscillator, and that will determine the frequency of the output. In eurorack, adding 1 volt to the CV increases the pitch by an octave (which is a doubling in frequency)
2) In short: you don't. Many eurorack systems are monophonic - they just have the once voice. There are a number of modules that will output chords, but if you want to do proper polyphony then you will end up needing one full oscillator-filter-adsr-vca set for each note in the chord. I have a video that demonstrates that setup: th-cam.com/video/5DMUukOaqKE/w-d-xo.html
3) Sequencers can be quite different, but this one has 8 steps and it outputs 3 CVs (they're based on the same knob settings, just scaled, but that can still be pretty cool). In this case it is doing the job of the keyboard, sending the CV to the VCO to tell it what pitch to play, but of course it can control anything. One thing I like to do with this one is to use one output for the pitch, and another one scaled down to change the filter cutoff. That way you get a subtle difference to how the notes sound at different pitches.
Very useful, thanks - now if you could just make a video that demystifies the Three Sisters in a similarly concise and informative way next, that would be awesome...!
Hey, thanks. Well, I even have a Three Sisters here! More than anything, I'm not sure how to make all the diagrams I'd want. :)
I'm doing Clouds and the Triple Sloths next, maybe I'll have a plan after that.
Great - I'll be watching. And the diagrams definitely helped, so definitely worth trying to incorporate them in some way or other.
Great video
best explination thank you so much. fml
Glad it helped!
This is incredibly helpful. I have a mangrove, a 2hp ADSR, and Maths. Can i use Maths as my VCA?
Thanks! Glad it was helpful.
I've never used a Maths as a VCA, but apparently it can be used that way 'in a pinch' (so it probably isn't super clean and reliable) and it requires all 4 channels, but, from the website:
Patch audio signal to CH. 1, with RISE and FALL at full CCW, or cycle CH. 1 at audio rate. Take output from SUM out. Set initial level with CH. 1 panel control. Set CH. 2 panel control full CW to generate a 10v offset. Audio will start to clip and may become silent. If it's still audible, apply an
additional positive offset with CH. 3 panel control until it is just silent. Set CH. 4 panel control to full CCW and apply envelope to Signal IN, or generate envelope with CH. 4. This patch creates a VCA with assymetrical clipping in the waveform. It will work with CV also, but be sure to adjust CV input settings to deal with the large base offset. The INV output may be more useful in some situations.
Honestly I think you'd have a way better time investing in something like a 2hp dual VCA.
@@SoundVoltage Wow, so insightful, thanks for taking the time! sounds like a little 2hp VCA is in my future!
It's really hard to hear you for some reason. I've gone on my best headphones & I have to crank it to max volume to hear what you're saying.
The video was rendered with the audio levels too low, it's fine but you have to crank it up. Shame because otherwise this guide was amazing.
Yea it’s dummy quiet
thanks. I was using the adsr and oscilator alone but I kept wondering "why won't this stop playing?" VCA's are your friend. P.S. Your audio is really quiet.
Glad you found it useful! And yeah, I was/am still working on my video-making chops.
Great name, btw. I woke up this morning thinking "Usul: the strength of the base of the pillar" for no particularly good reason... :)
@@SoundVoltage lol same and I'm glad you like the name. So do I!
You could do with a VCA on your audio. It's very quiet.