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FILTER SECTION

Filters

This section contains all the knobs & buttons associated with the Filter

These buttons select the slope of the cutoff curve of the Filter. Only one can be selected at once. The effect is similar to a “Q” control on a parametric EQ. In the 12db position the Cutoff Frequency slope is less steep so in a Low Pass Filter the higher frequencies are not attenuated as much as they are in the 24 or 18db positions. This makes the resulting filtering in the 12db position more subtle than the 24db or 18db positions which you should select if you want the Cutoff Frequency to be more obvious.

These buttons select the type of Filter to be used in this program. All have a very different sound. Below is a description of what parts of the sound the different Filters allow through the Filter. The Low button configures the Filter into a Low Pass Filter. A Low Pass Filter allows harmonics below a set frequency to pass through the Filter. Hence the name Low Pass Filter. The High button configures the Filter into a High Pass Filter. A High Pass Filter allows harmonics above a set frequency to pass through the Filter. Hence the name High Pass Filter. The Band button configures the Filter into a Band Pass Filter. A Band Pass Filter allows harmonics at a set frequency to pass through the Filter, the harmonics above & below the set frequency do not pass through the Filter. Hence the name Band Pass Filter. The setting of these buttons is memorised with a Program.

Special - Button

When the special filter button is pressed the display shows:

The higher parameter is “Filter type”. In this case with a value of Res LPF.

This parameter determines what type of Special filter is applied. Use the Higher data knob to adjust this parameter. There are 9 different special filters. Each one is made up of 2 filter blocks. The “Hyper Resonant” types are in series & are the Res LPF, Res BPF & Res HPF filters. These types are very resonant & the Filter width parameter allows the Cutoff frequencies of each filter block to be set at different frequencies. The rest of the filter types have the 2 filter blocks in parallel. Again the Filter width parameter allows the Cutoff frequencies of each filter block to be set at different frequencies. The range of this parameter is Res LPF, Res BPF, Res

HPF, Notch, LPF + LPF, BPF + BPF, HPF + HPF, LPF + BPF, & BPF + HPF. This parameter is memorised with a program.

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FILTER SECTION

The lower parameter is “Filter width”. In this case with a value of 00.

This parameter determines the spacing/offset in filter cutoff frequencies between the two elements of the “Special” filters. This is a duplicate of the Special type filter width parameter that is displayed on page 6 of the Filter menu. The reason for this is that it was found to be nice for the display to jump back to this parameter when editing & as this parameter is duplicated in the Filter menu it will do that when the Filter menu is selected. This can provide “Formant” type filters & speech like qualities can be easily realised. The Filter width is calibrated in semitones & a range of pre-set intervals are available. The range of this parameter is 00, 08, 16, 24, 32, 40, 48 & 56. Note that the Resonance modulation Knob in the Filter Modulation Matrix actually modulates the “Filter width” parameter & not the resonance when the “Special” filters are selected. The Resonance knob still retains its function as filter Resonance when in this mode. This parameter is memorised with a program.

NOTE:

Adjusting the value of this parameter will alter the value in the Filter menu. It is not possible to have different values set in the 2 pages.

Frequency - Knob

This knob controls the “Cutoff Frequency” of the Filter. Fully Clockwise & the Filters Cutoff frequency is set to the highest position, generally this produces a very trebly sound. Fully anticlockwise & the Filters Cutoff frequency is set to the lowest position, generally producing a very mellow sound. The range of this parameter is 000 to 127. This parameter is memorised with a Program.

NOTE:

It is possible to set the Filter so that it Filters out all of the sound. This normally happens at extreme settings. i.e. The Frequency knob set fully anticlockwise in Low Pass Filter mode or the Frequency knob set fully clockwise in the High Pass Filter mode.

Resonance - Knob

This knob controls the amount of Resonance the Filter has. The effect is to emphasise the harmonics around the Cutoff Frequency ( Set by the Frequency knob above ). For this reason on some synths this control is known as Emphasis. Fully anticlockwise there is no boosting of the Cutoff Frequency, but as you turn the knob clockwise this frequency will be boosted until fully clockwise it goes in to oscillation producing a new pitched element ( similar to feedback on an electric guitar ). Increasing the Resonance is very good for bringing out modulation ( movement or change ) in the Filters Cutoff Frequency, such as TB303 basslines. The range of this parameter is 000 to 127. This parameter is memorised with a Program.

Overdrive - Knob

This knob determines how much Overdrive is applied to the Filter. This can warm sounds up & give them a different harmonic content from the standard waveforms, “Warmer” sounds are produced by modelling the “Saturation effect” common in classic Analogue Filters. Fully anticlockwise the signal will be unaffected by the Overdrive. Fully clockwise & full drive will be applied. The range of this parameter is 000 to 127. This parameter is memorised with a Program.

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FILTER SECTION

Filter Modulation Matrix

modulation destination source

This is an extremely powerful feature of the Nova. These controls effect the modulation of the Filter. The Buttons on the left are “Destinations”. They can all be modulated by the “Sources” which are the buttons on the right. The amount of modulation applied from any source is determined by the setting of the Mod Depth Knob. This can be either positive modulation ( Turning the Mod Depth Knob Clockwise ) or negative modulation. ( Turning the Mod Depth Knob Anticlockwise )

For example to adjust the level of Envelope 2 modulation of the the “Freq” setting of the Filter press the “Frequency” button to define the modulation destination, it will light up indicating it is selected. Press the Env 2 button to define the modulation source. Now adjusting the “Mod depth” knob clockwise will modulate the Frequency setting of the Filter by Envelope 2.

NOTE:

This makes it possible for all modulation sources to effect any one destination in varying amounts & even in different polarities.

The display will change to indicate the parameter that has been selected & display the newly edited value. The Display will stay like this until another parameter is adjusted, in which case it will change to display the new parameter. To return to the display of the Program / Performance name & number press the Program or Performance button.

NOTE:

Only one source & destination can be edited at one time.

NOTE:

Even though only one source & destination combination can be edited at one time, all available combinations can happen at the same time.

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FILTER SECTION

Possible Combinations & the effects Produced.

NOTE:

The range of all these parameters is -64 to +63. All these parameters are memorised with a Program.

This combination controls the amount of change to the Filter Cutoff Frequency ( Initially set by the Frequency knob ) by LFO 1. In the central position there is no change to the Filter Cutoff Frequency. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by LFO 1. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by LFO 1.

This combination controls the amount of change to the Filter Cutoff Frequency ( Initially set by the Frequency knob ) by LFO 2. In the central position there is no change to the Filter Cutoff Frequency. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by LFO 2. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by LFO 2.

This combination controls the amount of change to the Filter Cutoff Frequency ( Initially set by the Frequency knob ) by ENV 2. In the central position there is no change to the Filter Cutoff Frequency. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by ENV 2. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by ENV 2.

This combination controls the amount of change to the Filter Cutoff Frequency ( Initially set by the Frequency knob ) by ENV 3. In the central position there is no change to the Filter Cutoff Frequency. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by ENV 3. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by ENV 3.

This combination controls the amount of change to the Filter Cutoff Frequency ( Initially set by the Frequency knob ) by the Mod Wheel. In the central position there is no change to the Filter Cutoff Frequency. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by the Mod Wheel. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by the Mod Wheel.

This combination controls the amount of change to the Resonance ( Initially set by the Resonance knob ) by LFO 1. In the central position there is no change to the Resonance. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will become less resonant by LFO 1. Clockwise of centre the modulation is Positive. i.e. The Filter will become more resonant by LFO 1.

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FILTER SECTION

This combination controls the amount of change to the Resonance ( Initially set by the Resonance knob ) by LFO 2. In the central position there is no change to the Resonance. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will become less resonant by LFO 2. Clockwise of centre the modulation is Positive. i.e. The Filter will become more resonant by LFO 2.

This combination controls the amount of change to the Resonance ( Initially set by the Resonance knob ) by ENV 2. In the central position there is no change to the Resonance. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will become less resonant by ENV 2. Clockwise of centre the modulation is Positive. i.e. The Filter will become more resonant by ENV 2.

This combination controls the amount of change to the Resonance ( Initially set by the Resonance knob ) by ENV 3. In the central position there is no change to the Resonance. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will become less resonant by ENV 3. Clockwise of centre the modulation is Positive. i.e. The Filter will become more resonant by ENV 3.

This combination controls the amount of change to the Resonance ( Initially set by the Resonance knob ) by the Mod Wheel. In the central position there is no change to the Resonance. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will become less resonant by the Mod Wheel. Clockwise of centre the modulation is Positive. i.e. The Filter will become more resonant by the Mod Wheel.

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FILTER SECTION

Menu - Button

When this button is pressed a series of pages is available on the display containing parameters relevant to this section.

In the Filter section there are 5 pages available. These are selected using the Page Up & Page Down buttons to the left of the display.

There are a maximum of 2 parameters displayed on any page. One for each line on the display. The “Fast Data” Knobs on the right of the display are used to alter these parameters values.

Page 1 looks like so:

As can be seen the higher parameter is “Filter tracking”. In this case with a value of 063

This parameter controls the amount of change to the Filter Cutoff Frequency ( initially set by the Frequency knob. ) by the pitch of the note being played. Placing the higher Fast Data knob fully anticlockwise means that playing notes at different pitches will have no effect on the Cutoff Frequency of the Filter. Clockwise from this position there will be an increasing amount of modulation. i.e.

The Filter will be opened more as higher notes are played in the keyboard. This control is used to determine how the timbre of a sound changes over the keyboard. At the fully clockwise position the Filter tracks the pitch changes in a 1:1 ratio. The range of this parameter is 000 to 127. This parameter is memorised with a Program.

As can be seen the lower parameter is “Q norm amount”. In this case with a value of 000

This parameter determines how the Resonance of the Filter behaves. Use the lower Fast Data knob to adjust this parameter. Fully Anticlockwise the Resonance is added to the incoming signal to the filter. This means that higher levels of resonance will produce a louder output signal form the Filter. Fully Clockwise the output level of the filter is maintained regardless of the position of the resonance control. The range of this parameter is 000 to 127. This parameter is memorised with a Program.

Page 2 looks like so:

As can be seen the higher parameter is “Fq MWh LFO2 amt”. In this case with a value of +63.

This parameter determines how the Modulation Wheel on the Master Keyboard effects the amount of Modulation of the Cutoff Frequency of the Filter from LFO 2. This produces a Wah Wah type of effect. In the central position of the higher Fast Data knob there is no change to the Filter Cutoff Frequency when the Master Keyboard’s Modulation Wheel is engaged. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be closed more by LFO 2 when the Master Keyboard’s Modulation Wheel is engaged. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly opened by LFO 2 when the Master Keyboard’s Modulation Wheel is engaged. The range of this parameter is -64 to +63. This parameter is memorised with a Program.

As can be seen the lower parameter is “Res MWh LFO2 amt”. In this case with a value of +63.

This parameter determines how the Modulation Wheel on the Master Keyboard effects the amount of Modulation of the Resonance of the Filter from LFO 2. In the central position of the lower Fast Data knob there is no change to the Filter Resonance when the Master Keyboard’s Modulation Wheel is engaged. Anticlockwise of centre there will be an increasing amount of Negative modulation. i.e. The Filter will be made less Resonant by LFO 2 when the Master Keyboard’s Modulation Wheel is engaged. Clockwise of centre the modulation is Positive. i.e. The Filter will be increasingly made more Resonant by LFO 2 when the Master Keyboard’s

Modulation Wheel is engaged. The range of this parameter is -64 to +63. This parameter is memorised with a Program.

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