User Manual
Table Of Contents
- Evolver Operation Manual
- Dave Smith Instruments
- 1210 Cabrillo Hwy N
- Half Moon Bay, CA 94019-1449
- For Technical Support, E-mail to:support@davesmithinstruments.com
- Contents
- Quick Start 6
- Basic Operation FAQs 11
- Inside Evolver 12
- Signal Flow Diagram 13
- Main Parameters 14
- Sequencer Operation 18
- Program Parameters 21
- Modulation Destination Table 38
- Modulation Source Table 40
- MIDI Implementation 41
- Welcome…
- Register
- Version 3.0 Notes
- Quick Start
- Program Notes
- Bank 1
- Bank 4
- Programs 80 – 128 are sounds meant to played from a keyboard; some have sequences programmed, and some do not. Most respond in different ways to keyboard pressure and mod wheel.
- Special thanks to Program contributors, including:
- Craig Wiper
- Basic Operation FAQs
- The Analog Side
- The Digital Side
- Sequencer Operation
- While the sequencer is running, if you hold the Shift button when you hit the Stop button, the sequence will continue running until finished (according to the length of Sequence 1), and will stop after playing step 1.
- A simple “tap tempo” feature is available. With the sequencer off, hold the Reset button, and then hold the Start/Stop button for a count of four; then lift up the Start/Stop button in time. The sequencer will start with the new tempo. Note – the actual speed will depend on the Clock Divide setting. The count will match if Clock Divide is set to 4n. If set to 8n, it will play twice as fast as your “tap”, and so forth.
- Program Parameters
- Display
- Destination
- 0ff
- No destination selected
- 01F
- Oscillator 1 Frequency
- 0AL
- Oscillator All Level
- noL
- Noise Level
- El
- External In Level
- 01P
- Oscillator 1 Pulse width
- F43
- Frequency Mod (FM) Amount; Osc 4 -> 3
- F34
- Frequency Mod (FM) Amount; Osc 3 -> 4
- R43
- Ring Mod (Amplitude) Amount; Osc 4 -> 3
- R34
- Ring Mod (Amplitude) Amount; Osc 3 -> 4
- FL
- Lowpass filter frequency
- FLS
- Filter Split –separation between left / right
- Res
- Resonance
- UCA
- VCA amount
- Fbf
- Feedback frequency
- Fba
- Filter Amount
- Dt1
- Delay 1 Time
- DA1
- Delay 1 Amount
- L1f
- LFO 1 Frequency
- L2f
- LFO 2 Frequency
- L3f
- LFO 3 Frequency
- L4f
- LFO 4 Frequency
- Additional Sequencer-Only Modulation Destinations
- Display
- Destination
- CL0
- Sequencer clock (BPM) multiplier
- n0
- MIDI note number
- uel
- MIDI Velocity
- Modulation Sources
- Display
- Source
- 0ff
- No Source selected
- SE1
- Sequence 1
- fen
- Filter Envelope
- MIDI Implementation
- MIDI Messages
- System Exclusive Messages
- 0
- No destination selected
- 1
- Oscillator 1 Frequency
- 10
- Oscillator All Level
- 11
- Noise Level
- 12
- External In Level
- 13
- Oscillator 1 Pulse width
- 16
- Frequency Mod (FM) Amount; Osc 4 -> 3
- 17
- Frequency Mod (FM) Amount; Osc 3 -> 4
- 18
- Ring Mod (Amplitude) Amount; Osc 4 -> 3
- 19
- Ring Mod (Amplitude) Amount; Osc 3 -> 4
- 20
- Filter frequency
- 21
- Filter Split –separation between left / right
- 22
- Resonance
- 23
- Highpass Frequency
- 24
- VCA amount
- 25
- Pan
- 26
- Feedback frequency
- 27
- Feedback Amount
- 28
- Delay Time 1
- 29
- Delay Time 2
- 30
- Delay Time 3
- 31
- Delay Time All
- 32
- Delay Amount 1
- 33
- Delay Amount 2
- 34
- Delay Amount 3
- 35
- Delay Amount All
- 36
- Delay Feedback 1
- 37
- Delay Feedback 2
- 38
- LFO 1 Frequency
- 39
- LFO 2 Frequency
- 40
- LFO 3 Frequency
- 41
- LFO 4 Frequency
- Sequencer only destinations
- 69
- Tempo Clock multiplier
- 70
- MIDI Note Out
- Modulation Sources
- 0
- No Source selected
- 1
- Sequence 1
- 9
- Filter Envelope
rs1
Reverse Stereo 1 – Right channel panned somewhat left,
Left somewhat to the right
rs2
Reverse Stereo 2 – Right channel panned mostly left, Left
mostly to the right
rs3
Reverse Stereo 3 – Right channel panned fully left, Left fully
to the right
Volume: 4 8 0…100 Sets the voice volume; usually used for matching volumes
between Programs.
Feedback
Feedback is implemented via two identical tuned delay lines, one for each channel –
see the diagram on page 13. Since the delay is tuned, it can be played by modulating
the feedback frequency from the sequencer or other sources.
Note – Feedback can also be used to implement plucked string physical models –
use Envelope 3 with Noise as a destination (all oscillators off). Assign a sequence
to Feedback Frequency, play around with different Feedback Levels, and adjust
the filter cutoff frequency.
Frequency 5 1 0…48 Sets the base frequency of the main feedback loop. It
steps in semitones from C0 to C4 (0 – 48) for a four octave range. The exact
frequency is influenced by other factors, such as the filter frequency and number of
poles, which can drive it slightly sharp or flat.
Level 5 2 0…100 Level of feedback. As the level goes up the feedback will
eventually oscillate at the set Frequency. Medium levels of feedback add depth and
movement to the sound.
Grunge 5 3 OFF…On When on, it enables nasty feedback at higher levels –
it will not have any effect at lower levels of feedback.
Delay
The delay takes a mix of both channels as input, and provides up to three
independent taps, each which can be separately time or level modulated. The output
of the three taps is mixed and summed with the Left and Right channels. The delay
output also can be mixed back to the input of the delay for more ambience, repeating
delays, or tuned feedback if the feedback level is set high.
A second feedback path takes the delay output and routes it back to the input of the
analog filter; this path can be used for more extreme feedback effects.
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