Noise and crackling in lower note regions

[teariceneptune]

Hi @dzlonline, thnx for this library! Great work!

I'm creating a simple copy cat of the Synth Module Chord Organ by Music Thing Modular --> In my approach, it creates 4 voice chords in different shapes and a certain root note. Based on your library, which was awesomely easy to implement! 👍🏻

Still, I have a steady noise or crackling in the result. Especially with lower root notes.

Do you have an idea how I can fix this?

Here's the current state of my project:

• Sound example (Major chord)
• Video demo
• Schematic
• Sketch code
• Breadboard setup (image)

Thank you in advance!
Steffen.