Florian Jung

scale the control current by the same factor.

- [ ] VCO: remove var_vsrc, hard-wire schmitt_feedback and maybe even the tune poti - [ ] voice board: get rid of all the trim potis; no filter overdrive (vca...

Use DMA to initiate dummy transfers so the SPI bus never becomes idle. Trying to tackle #24

Figure out whether the buzz goes away, when putting - [ ] the main board or - [ ] the voice board or - [ ] both into a metallic...

SPI clock noise

2

The filter overlays the filtered signal with a nasty 1kHz signal. The SPI dacs update with 1kHz update rate. Changing this changes the hum. Since SPICLK is running at 5MHz,...

Signal leaks through the closed VCA

2

Leaking occurs even with the signal *not* being routed into the transistor's base terminal oO? Leaking is stronger when a useless film capacitor is connected to the signal on the...

There is a emitter follower required to prevent the ring modulation circuitry (or any other consumer) to affect the frequency