Dave Smith Instruments SYNTHESIZERS

we all have in-counted the diffrent attack-thingy when sequencing DCO waves. I wrote to the guys at DSI about it and got this back:

Hi Peter,

I'm sorry you're encountering problems with your Evolver and would be happy to help answer your questions. What you're experiencing with the attack portion of the waveform changing on the Evolver is actually due to the architecture of it's voice.

There are 2 things that cause the click. The first is common to analog synths with free-running oscillators. When the envelopes are gated on, the waveform might be at any point in the cycle. With a fast attack, that results in an almost vertical leading edge and, hence, a click. It's most noticeable on an unfiltered triangle wave, especially at low frequencies. The click will change from one note-on to another and be less obvious with more complex sounds and/or as the attack time increases. As far as I know, this is the case with all analog synths and is even preferred by some analog purists. If you're used to digital or soft synths that reset the waveforms to a zero-crossing every time a note is gated on, it can be kind of startling and sound "wrong."

The second cause for what you're hearing is caused by the crossover point of the analog oscillators. This discontinuity exists because of the topology of the oscillator circuit. When a high note is played the oscillator circuit much switch a resistor inline with the control signal, this causes a slew in the rising edge of the waveform which can appear as a click when the envelope rise time is quicker than that of the waveform.

The Mono Evolver Desktop and Keyboard are feature complete and will most likely not have any OS updates in the future. I hope this helps answer your questions. If you have any more, please feel free to ask.

Thank you for supporting DSI and have a great time with your Evolver!

Thank you,

Carson
Dave Smith Instruments