EVM Moebius Basic User Manual
The Moebius virtual analogue synthersizer is capable of producing a large collection of different sounds from smooth analogue string pads to harsh digital synths. Incorporating a custom built reverb simulator, Chorus/Ensemble module, Phase shifter and a unique adaptation of a phrase arpeggiator the Moebius can generate sounds unlike other VSTi synthersizers.
The oscillators are the start of synthersizer sound design. The Moebius has two. Each one can work independantly or they can be pitch syncronized.
Oscillator A
Octave Selects range +/- four octaves
Semi Adjust pitch +/-
one octave in semitone steps
AB Tune Adjust pitch for OscA and OscB +/- one
semitone(variable)
Wave Select oscillator
waveform (sine,saw,square,white noise)
Pwm Adjust pulse width
for square wave
Route Select the destination
for amplifier envelope control over OscA
Amount Adjust the level from amplifier envelope
to the selected OscA route
Sync Syncronizes the
start of each waveform cycle for OscA and OscB
Poly Enables/disables
polyphonic mode
Osc Mix Balances the output for each oscillator
Glide Selects the glide rate
for both oscillators
Oscillator B
Octave Selects range +/- four octaves
Semi Adjust pitch +/-
one octave in semitone steps
Detune Adjust pitch for OscB +/- one
semitone(variable)
Wave Select oscillator
waveform (sine,saw,square,white noise)
Pwm Adjust pulse width
for square wave
Route Select the destination
for amplifier envelope control over OscB
Amount Adjust the level from amplifier envelope
to the selected OscB route
The amplifier envelope generator is used to shape the overall level of sound. This envelope also affects the pitch and pwm routing for each oscillator.
The Moebius has a self oscillating filter, that can be adjusted between low pass and high pass types from its ratio control as well as its own ADSR envelope. Both filter frequenct and ratio can also be modulated from one of the LFOs. The filter can also be tracked by the keyboard. The KBD FLT knob adjusts this amount in combination with the main filter frequency knob.
Each of the two LFOs have four wave shapes to choose from with four destinations as well as independent delay levels.
LFO 1 Destinations:- OscA,PwmA,Filter,Filter Ratio LFO 1 waveshapes:- Sine,Saw,Square,Random
LFO 2 Destinations:- OscB,PwmB,Phaser,Focus LFO 2 waveshapes:- Sine,Ramp,Square,Random
This is not a normal arpeggiator
When active the NTP arp will record the notes you play in real time and replay them back in the same order that they were recorded. The playback speed is set by the BPM control led, each value (1-4) being a sub-division of the master BPM clock. Two more options are MODE1 and MODE2. The mode1 setting will play the note sequence one octave higher than origionally played and the mode2 setting will play it one octave lower. However, the time that this change is made is set by selecting one of the UP or DOWN leds. These controls only make the octave change when the arp is clocked to a division of the current BPM. By mixing different BPM settings for UP and DOWN some very unusual musical arpeggios will be created.
The Moebius arpeggiator can also opporate in polyphonic mode, so that by playing a chord you will hear it at the current sustain level and the arp will also sequence through each note.
Finally the arp is also auto latching with last note hold priority. By playing notes in sequence, releasing the first notes played but still holding down the last note the arp will continue playing. Now any new notes you play will become the new last note held, alowing the creation of complex sequences.
The main effects section consists of a reverberation simulator and a chorus/ensemble section. The two units are interconnected to enable the creation of ambient background effects. The reverb unit has a pre-delay option to emulate large spaces with variable size and the option to diffuse the higher frequencies of the feedback for a more natural effect. This unit also has the option to focus the origional sound within the reverb field while the final effect remains stereo. Focusing the sound is normally automatic but can also be controlled manually by the focus knob next to the main volume control, or modulated from LFO2. In Auto mode the focus gets its modulation from the chorus setting.
The third effect is a six stage inversion phase shifter, where three of the stages have the input signal inverted before being remixed back into the main signal path. The phasers pitch can be modulated from LFO2.
Basic controllers are for MIDI channel 1-16 or All and the pitch wheel bend range 1-12 semitones. The Host sync button is used to retrigger incomming MIDI note on messages from the host sequencer, so that each note will gate the amp/filter envelopes without overlapping.
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