Evolver (synthesizer)

Last updated
Evolver
Evolver Desktop and Keyboard.jpg
Manufacturer Dave Smith Instruments
DatesEvolver Desktop
2002-2014
Poly Evolver Rack
2005-2010
Poly Evolver Keyboard
2005-2014
Evolver Keyboard
2006-2012
PriceEvolver Desktop - $599
Evolver Keyboard - $1,199
Poly Evolver (4 note polyphonic version) -
$2,399 for keyboard version, $1,349 for rack
Technical specifications
Polyphony 1 voice, monophonic
Timbrality Monotimbral
Oscillator 4 total - 2 analog (saw, saw-triangle,
triangle, and pulse waveforms),
2 digital oscillators (95 wavetable waveforms)
LFO 4 total - triangle, saw, reverse saw,
pulse (square), and random (S&H) waveforms
Synthesis typeAnalog/Digital Hybrid:
Filter analog low pass (resonant 4-pole or 2-pole),
digital high pass
Attenuator 3 ADSR envelope generators.
Storage memory512 programs
Effects distortion, delay, hack, feedback, grunge
Input/output
Keyboard 37-note

The Evolver is an analog-digital hybrid synthesizer designed by Dave Smith and manufactured by Dave Smith Instruments. It was first released as a desktop version in 2002, then later a 37-key keyboard bearing the same synth engine as the Evolver desktop was also released. A polyphonic version of the Evolver, dubbed the Poly Evolver, was released in 2004 as a rackmount version, then a 61-key keyboard version of the Poly Evolver was released in 2005. The Evolvers were replaced by new high end models, the Prophet 12 and the Pro 2.

Contents

History

Smith worked on a number of synthesizers in the past, such as the revolutionary Prophet 5, the Korg Wavestation (a direct descendant of the Prophet VS), and the first professional software synthesizer, "Reality". After helping Roger Linn on his line of AdrenaLinn guitar effects pedals, he got interested in hardware again and eventually decided to start producing a new line of hardware synthesizers, partly because of seeing how soft synths are now easily "ripped off.", calling the Evolvers hardware "the ultimate dongle". [1]

The name Evolver is because the synthesizers sound is constantly changing, subtly or dramatically. Originally, Smith intended for the Evolver to be named "Noise," since he "always wanted to design a synth with that name. [2] While creating sound presets to demonstrate the synthesizer at the NAMM tradeshow, he was impressed by the "organic" nature of the synthesizer's sound, his wife, Denise, came up with the more aptly suited name, Evolver.

Synthesis

The Evolver's sound comes from 4 oscillators, 2 of which are analog and 2 of which are digital. The two analog oscillators provide classic waveforms; saw, triangle, saw-triangle, and pulse (which can be turned into a square wave at a value of 50%). The analog oscillators in the Evolver are very stable and accurate unlike some analog oscillators of the past, but drift (oscillators waver in and out of tune) can be applied. The two digital oscillators feature 95 12-bit wavetable waveforms from the Prophet VS but 16-bit user waveforms can also be loaded onto the internal RAM storage. Oscillators 1 and 3 are hardwired to the left channel, oscillators 2 and 4 are hardwired to the right. The two analog oscillators can be hard synced together, and the two digital oscillators can be ring modulated and frequency modulated to each other independently. Each oscillator can be independently tuned over a span of 10 octaves (8 Hz to 8 kHz). There is also white noise that can be used as a sound source, it is sent through the filter and cannot be routed any other way.

While the Evolver is monophonic, multiple Evolvers can be linked together via MIDI to create a "chain" that, in turn, creates polyphony based on how many units are chained together. The same is true for the Poly Evolvers, up to 5 Poly Evolvers can be chained to obtain a 20-note polyphony.

There are two analog low pass filters, one for each stereo channel. Each low pass filter can be changed between 4-pole or 2-pole. Unless programmed otherwise (split), the two analog filters each retain the same settings, thus processing the audio in both channels identically. However, since the filters are analog, even if they are working at identical settings, there will be slight variations in each filter's output. Each filter has its own ADSR envelope generator, and the low pass filters are also resonant, and can self oscillate.

There is also a non-resonant, digital, 4-pole high pass filter available for further processing. The high pass filter can either be applied after the low pass filters, or before (if applied before the low pass filters, the high pass filter only affects an external audio signal).

The VCA also utilizes an ADSR envelope. There is a third ADSR envelope generator for modulation purposes.

There are 4 LFOs available for modulation purposes. The LFOs in the Evolver have speeds ranging from the very slow (one cycle every thirty seconds) to incredibly fast (261 cycles a second, almost middle C in musical terms). Some of the analog components of the Evolver cannot handle some of the incredibly high frequencies of the LFOs due to limitations in the control voltage speeds.

Effects

The effects available in the Evolver include distortion, delay, hack, feedback, and grunge. The distortion is digital, and at the value of 1, the distortion acts as a noise gate. There is a 3-tap delay, meaning that the signal can be delayed with three flexibly programmable delays that are independent from each other. The hack effect "trashes" the output (it can also be applied to external audio before the low pass filter), it produces an effect similar to bit reduction or decimation. There is also an option to create independent stereo feedback loops, which is routed through the filter. The grunge option produces a nasty feedback at higher levels, but has no effect at lower levels.

All effects except for hack can be modulated with the LFOs. If feedback is modulated correctly, the user can create cyclic effects similar to flange or chorus.

Sequencer

The sequencer on the Evolver is a 4x16 analog-style step sequencer. This means up to four sequences (each being 16 steps each) can be used as modulation sources, and can be routed to any of the modulation destinations in the Evolver. The sequencer can be stepped by the internal clock, by the MIDI clock (for beat syncing), or by MIDI notes.

Certain parameters, such as pitch, filter frequency, volume, etc. can be turned into MIDI signals, so the sequencer of the Evolver can be used to sequence standard parameters on other MIDI compatible devices.

Each of the 16 steps can be individually edited for duration, level, and even can be used to change up the digital oscillators' waveforms (a different digital waveform can be programmed for each step). This makes the Evolver's sequencer a very powerful tool. As a last-minute addition on the Evolver Keyboard, an arpeggiator was added using the controls for the sequencer - this is termed a "hidden function" in the Evolver's documentation, and does not seem to be present in the voice structure of its larger cousin, the Poly Evolver.

Related Research Articles

Ensoniq ESQ-1 Synthesizer

Ensoniq ESQ-1 is a 61-key, velocity sensitive, eight-note polyphonic and multitimbral synthesizer released by Ensoniq in 1985. It was marketed as a "digital wave synthesizer" but was an early Music Workstation. Although its voice generation is typically subtractive in much the same fashion as most analog synthesizers that preceded it, its oscillators are neither voltage nor "digitally controlled", but true digital oscillators, provided by a custom Ensoniq wavetable chip. The signal path includes analog resonant low-pass filters and an analog amplifier.

The Yamaha AN1x is a DSP-based analog modeling synthesizer, produced by Yamaha Corporation from 1997 to 1998, and was marketed as an "analog physical modelling control synthesizer".

ARP Odyssey Electronic musical instrument developed by ARP

The ARP Odyssey is an analog synthesizer introduced by ARP Instruments in 1972.

Roland MC-202

The Roland MC-202 (MicroComposer) is a monophonic analog synthesizer and music sequencer released by Roland in 1983. It was the first groovebox. Its synth is similar to the TB-303 bass synth and the SH-101 synthesizer, featuring one voltage-controlled oscillator with simultaneous saw and square/pulse-width waveforms. It is a successor to the Microcomposer family of sequencers, including the MC-8 and MC-4. The unit is portable and can be operated from batteries or an external power supply.

Moog Concertmate MG-1 Monophonic analog synthesizer

The Realistic Concertmate MG-1 is an analog synthesizer manufactured by Moog Music in 1981 and sold by Radio Shack from 1982 to 1983 under their "Realistic" brand name. It was produced without some standard Moog features, such as pitch and modulation wheels, as a cost-cutting measure aimed at achieving a lower price for the consumer market. The synthesizer also featured a pair of pass-through RCA jacks, which allowed users to mix radio or records into the final live synthesized sound output.

microKORG Synthesizer released in 2002

The microKORG is a MIDI-capable digital synthesizer/vocoder from Korg featuring DSP analog modelling. The synthesizer is built in such a way that it is essentially a Korg MS-2000 with programmable step arpeggiator, a less advanced vocoder, lack of motion sequencing, lack of an XLR microphone input, and in a smaller case with fewer real-time control knobs.

Korg DW-8000 Hybrid digital-analog synthesizer

The Korg DW-8000 synthesizer was an eight-voice polyphonic hybrid digital-analog synthesizer 61-note keyboard instrument released in 1985. By the time of its launch Korg had already begun a common trend in 1980s synthesizer design: using numerical codes to access or change parameters with its predecessor - the Korg Poly-61, which was widely regarded as the company's first 'knobless' synthesizer. This was a move away from the heavily laden, complex control panels of earlier designs.

The Memorymoog is a polyphonic electronic music synthesizer manufactured by Moog Music from 1982 to 1985, the last polyphonic synthesizer to be released by Moog Music before the company declared bankruptcy in 1987. While comparable to other polyphonic synthesizers of the time period, such as the Sequential Circuits Prophet-5 and Oberheim OB-Xa, the Memorymoog distinguished itself with 3 audio oscillators per voice and greater preset storage capacity.

The KORG Poly-61(PS-61) is an analogue programmable polyphonic synthesizer released by Korg in 1982, as a successor to the Polysix. It was notable for being Korg's first largely "knobless" synthesizer - featuring a push-button interface for programming, dispensing with the Polysix's knobs and switches. The Poly-61 also uses digitally controlled analog oscillators or DCO's, in place of the Polysix' VCOs. The Poly-61 also boasted double the amount of patch memory, but did not feature its predecessor's on board effects.

Korg MS2000 Synthesizer released in 2000

The Korg MS2000 is a virtual analog synthesizer produced by the Japanese electronic musical instrument manufacturer Korg.

Korg Wavestation Synthesizer

The Korg Wavestation is a vector synthesis synthesizer first produced in the early 1990s and later re-released as a software synthesizer in 2004. Its primary innovation was Wave Sequencing, a method of multi-timbral sound generation in which different PCM waveform data are played successively, resulting in continuously evolving sounds. The Wavestation's "Advanced Vector Synthesis" sound architecture resembled early vector synths such as the Sequential Circuits Prophet VS.

Oberheim OB12 Synthesizer released in 2000

The Oberheim OB•12 is a Virtual Analog synthesizer, designed and realised by the Italian musical instrument manufacturer Viscount, in production between 2000 and 2005.

Oberheim Xpander Analogue synthesizer

The Oberheim Xpander is an analog synthesizer launched by Oberheim in 1984 and discontinued in 1988. It is essentially a keyboardless, six-voice version of the Matrix-12. Utilizing Oberheim's Matrix Modulation technology, the Xpander combined analog audio generation with the flexibility of digital controls logic.

Prophet 08 Synthesizer

The Prophet '08 is a polyphonic analog synthesizer created by Dave Smith of St. Helena, California, US, for Dave Smith Instruments (DSI), released in late 2007. As with DSI's other instruments, the Prophet '08 uses analog subtractive synthesis, as opposed to many of the current crop of synthesizers, which employ DSP-based virtual analog synthesis.

Korg Mono/Poly Analog synthesizer, manufactured by Korg from 1981 to 1984

The Korg Mono/Poly (MP-4) is a 44 key "mono-polyphonic" analog synthesizer manufactured by Korg from 1981 to 1984. This keyboard is the sister synthesizer to the Korg Polysix. It has four highly stable voltage-controlled oscillators (VCOs), a 4-pole, self-oscillating low pass filter (LPF), wide modulation capabilities and pseudo-polyphony (paraphony).

Korg PS-3300 Polyphonic analogue synthesizer

The Korg PS-3300 is a polyphonic analog synthesizer, produced by Korg between 1977 and 1981.

Akai AX80 Analogue synthesizer

The AX80 is a polyphonic analogue keyboard synthesizer manufactured by Akai Professional in 1984. It was Akai's first venture into the professional electronic musical instrument market. The AX80 used digitally controlled oscillators (DCO) and filter circuitry based on the Curtis Electronics CEM 3372 integrated circuit. It was marketed as part of a line of project studio equipment called the Akai Music Studio System, which included the S612 digital sampler the MR16 drum machine, the MS08 sequencer, and the MG1212 multitrack tape recorder, at a price of $1,695 US.

Akai AX60 Polyphonic analogue synthesizer

The AX60 is a polyphonic analogue keyboard synthesizer manufactured by Akai Professional in the mid-1980s. It was Akai's answer to the popular Roland Juno series synthesizers. The AX60 uses voltage-controlled analogue oscillators and filter circuitry based on the Curtis Electronics CEM 3394 integrated circuit.

Casio CZ synthesizers Family of synthesizers by Casio

The CZ series is a family of low-cost phase distortion synthesizers produced by Casio in the mid-1980s. Eight models of CZ synthesizers were released: the CZ-101, CZ-230S, CZ-1000, CZ-2000S, CZ-2600S, CZ-3000, CZ-5000, and the CZ-1. Additionally, the home-keyboard model CT-6500 used 48 phase distortion presets from the CZ line. The CZ synthesizers' price at the time of their introduction made programmable synthesizers affordable enough to be purchased by garage bands. Yamaha soon introduced their own low-cost digital synthesizers, including the DX-21 (1985) and Yamaha DX100, in light of the CZ series' success.

Synth1

Synth1 is a software synthesizer designed by KVR user Daichi. It was originally designed as an emulation of the Nord Lead 2 synthesizer, and has since become a unique Virtual Studio Technology instrument and one of the most downloaded VST plug-ins of all time. The software used to be a DirectX instrument plugin, but became solely VSTi from version 1.08 on. Version 1.13 was the first version to introduce a native 64-bit version of the plugin.

References

  1. "Dave Smith Evolver". Sound On Sound. Archived from the original on 2011-10-12. Retrieved 2011-06-20.
  2. "Design Background". Dave Smith Instruments. Archived from the original on 2005-04-04. Retrieved 2011-06-20.

Further reading