I tried posting this in the morning but I had trouble getting it to upload, thankfully I got it running this evening, my internet is terrible my wife called our internet provider, apparently there is something wrong with the "circuit" as someone who works with circuits on a daily basis I still have no idea what this means... what circuit... where?
anyways rant over...
This is my 11th daily Vlog and today I will be talking about oscillators and showing them displayed with my oscilloscope. An oscillator is one of the basic building blocks of a synthesizers. Oscillators create a voltage that goes up and down in a repetitive cycle. Oscillators used in synthesizers can be controlled musically, in the case of eurorack most oscillators have a one volt per octave control. This means that each volt is equal to a one octave change or doubling/halving of the frequency. By having a sequencer calibrated to send out 1/12th volts per half step we achieve an equal tempered tuning and allows for the playing of notes and scales.
Oscillators run continuosly and are often fed into a voltage controlled amplifier, VCA and a filter to allow control over the amplitude and timbre. By using a vca the oscillator can be articulated as individual sounds and envelope generator allows for the attack, decay sustain and release stages of the note to be controlled allowing for musical articulation of the amplitude.
Different waveforms have different harmonic content, with a sine wave having the least, a sine wave only has the fundamental pitch, no harmonics. In another video I will get more into basic waveform and what harmonics are present, the difference between frequency and time domain and briefly about FFTs(I won't do the math). For now I will just show some of the waveforms I have available in my eurorack system and let you hear and see them.
In this video I show three oscillators, Make Noise STO, GSMN pure VCO which I soldered myself and uBraids a modification on Mutable Instruments Braids, which I also soldered myself. You will see some basic analog waveforms, and more complicated digital waves from the Ubraids.
Thanks to everyone for following and upvoting, I appreciate all the support I have been receiving. I couldn't have done this without you! If you have any questions about synthesis definitely leave a comment, I love geeking out about this stuff!
~Noah
I just joined adsactly, I'm still learning adsactly what adsactly is but it seems like a good thing... check it out
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Your rack reminds me of the TARDIS... You have a lot of fun audio science going on 😀👍
Haha if only my studio was bigger on the inside. It’s a bit cramped
cool video man. i gotta get an oscilloscope. i love seeing the waveforms as they are created.