Novation X-Station User Manual

Also see for X-Station: Supplementary guide Specifications

Contents

Novation X-Station User Manual Manual pdf 48 page image

LFO Keysync Initial Phase Offset(Menu Pages 4 & 11 ‘LFO1 Init Phase’)This setting provides an alternative point in the LFO’s waveform cyclewhere the waveform will be restarted from when LFO Keysync is set toON. To hear the difference, set a slow LFO to modulate Oscillator pitchmodulation and experiment with different LFO waveforms and LFOKeysync Phase Offset settings.LFO Polarity (Menu Pages 5 & 12 ‘LFO1 Unipolar’)Determines whether the LFO modulates in a positive and negativedirection or solely in a positive direction.As an example of how this works, imagine an LFO assigned to modu-late an Oscillator’s pitch while a key of middle C is played on the key-board. When Unipolar is set to OFF, the pitch would be modulatedbetween a note some interval below middle C and another note at anequal interval above middle C. The interval between the notes is deter-mined by the modulation amount applied to the pitch by the LFO.If the LFO was modulating the pitch with Unipolar set to ON, the pitchwould only be modulated in a positive direction, so the pitch wouldmodulate between middle C and another note located at some intervalabove.It is often useful to set an LFO’s Unipolar setting to ON if an LFO isbeing used as a simple Envelope Generator (by setting its ONE SHOTmode) .LFO Common to all voices (Menu Pages 6 & 13 ‘LFO1 Common’)Each of the 8 voices (notes of polyphony) have two LFOs - 16 in total.The eight LFOs designated LFO 1 (one per voice) may be ‘phase’locked together and similarly the eight LFOs designated LFO 2 may belocked.To illustrate this, assume the LFO waveform is a triangle wave and at aspecific moment in time all sixteen are at the beginning of a the risingportion of the wave. At a later point in time all will be at the beginning ofthe falling portion of the wave. If this waveform is applied to pitch, whena number of notes are played simultaneously, the pitch of all the noteswill rise and fall at precisely the same time.If the LFO is not locked, then each wave will be at a random positionrelative to the others. In this pitch modulation example, the pitch of allthe notes will be changing ‘out of synchronization’ with others.Imagine a String section of eight violin players. With the LFO lockedand the LFO being used to create a vibrato, all sixteen of the stringplayers would have the bow in exactly the same position. This obvious-ly does not occur in a real string section and if it did the sound would bevery unusual. In reality, each player’s bow would be in a different posi-tion which gives the strings a ‘chorus’ type sound. To simulate the stringsection the LFOs would not be locked.Setting this to ON will ‘lock’ the LFO.When LFO Common To All Voices is set to ON, changing the settingof the LFO Keysync function will have no effect. Instead, how a key-sync is applied to the LFO is determined by the setting of the SynthGlobal Sync value (found in the KS Synth Global Menu). See Page 52for details.LFO One-Shot (Menu Pages 7&14 ‘LFO1 One-Shot’)Determines if the selected LFO will repeat its waveform at the endof the first cycle throughout the duration of a voice or if the select-ed LFO will only cycle through its waveform once, to effectivelybecome an envelope.The selected LFO will repeat if the One-Shot setting is ‘off’. Theselected LFO will only cycle once if the One-Shot setting is ‘on’.THE KS SYNTHESIZERThe LFO Menu• 48 •Middle CTimePitchUnipolar set to OFFMiddle CTimePitchUnipolar set to ON