19
Two examples of Filter routings…
…a Notch Filter:
F1Type
:
LP
F2Type
:
HP
F1Routing
:
Parallel
Frequency
Volume
Filter 1
Filter 2
Frequency
Volume
Filter 1
Filter 2
…a wideband bandpass filter
F1Type
:
HP
F2Type
:
LP
F1Routing
:
Series
Frequency
Volume
Filter 1
Filter 2
Frequency
Volume
Filter 1
Filter 2
Parameter:
Filter Frequency Link
Displayed As:
FreqLink
Default value:
Off
Range of adjustment:
Off or On
Setting FreqLink to On creates a relationship between the frequencies of the two Filter
sections, and re-assigns the function of F2Freq for Filter 2 from Frequency to Frequency
Offset (see F1Freq, above). Filter 2’s offset is relative to Filter 1’s frequency.
Frequency
Volume
Filter 1
Filter 2
Frequency
Volume
Filter 1
Filter 2
Frequency
Volume
Filter 1
Filter 2
An increase in Filter 1’s frequency will also increase Filter 2’s frequency
An increase in Filter 2's frequency will decrease Filter 1's frequency
A decrease in Filter 2's frequency will increase Filter 1's frequency
Parameter:
Resonance Link
Displayed As:
ResLink
Default value:
Off
Range of adjustment:
Off or On
Setting ResLink to On applies the same Resonance parameter value to both Filter 1 and
Filter 2. The Filter Resonance control (F1Res) affects both filters, regardless of which filter
is currently selected for adjustment.
Edit menu - Submenu 5:
Voice
The MiniNova is a multi-voice, polyphonic synthesizer, which basically means you can play
chords on the keyboard, and every note you hold down will sound. Each note is termed
a ‘voice’, and the MiniNova’s DSP engine is sufficiently powerful to ensure that you will
always run out of fingers before you run out of voices! However, if you are controlling
the MiniNova from a MIDI sequencer, it is theoretically possible to run out (there are a
maximum of 18 voices internally). Although this is likely to happen only rarely, users may
occasionally observe this phenomenon, which is termed ‘voice stealing’.
The alternative to polyphonic voicing is mono. With mono voicing, only one note sounds at
a time; pressing a second key while holding the first down will cancel the first and play the
second – and so on. The last note played is always the only one that you hear. All the early
synths were mono, and if you are trying to emulate a 1970s analogue synth, you may wish
to set the voicing to mono as the mode imposes a certain restriction on playing style that
will add to authenticity.
In addition to selecting polyphonic or mono voicing, the Voice menu also lets you set the
portamento and other related voicing parameters.
Parameter:
Unison Voices
Displayed As:
Unison
Default value:
Off
Range of adjustment:
Off, 2, 3, 4
Unison can be used to “thicken” the sound by assigning additional voices (up to 4 in
total) for each note. Be aware that the “reservoir” of voices is finite and with multiple
voices assigned, polyphony is accordingly reduced. With 4 voices per note, a four-note
chord approaches the MiniNova’s limit, and if further notes are added to the chord, “voice
stealing” is implemented and the initial note(s) played may be cancelled.
If the limitation on polyphony imposed by Unison Voices is restrictive, a similar
effect can be obtained by using multiple oscillators and adjusting their Density
and Detune parameters. In fact, most of the factory patches use Density and
Detune rather than Unison to achieve their thickening effect.
Parameter:
Unison Detune
Displayed As:
UniDTune
Default value:
25
Range of adjustment:
0 to 127
Unison Detune applies only when Unison Voices is set to something other than Off.
The parameter determines how much each voice is detuned relative to the others; you will
be able to hear a difference in the sound of the same note with different numbers of voices
even if Unison Detune is set to zero, but the sound gets more interesting as it is increased
in value.
Changing the settings of Unison Voices or Unison Detune while holding a
note down has no effect on the sound. The new settings will only be effective
when a fresh note is played.
Parameter:
Portamento Time
Displayed As:
PortTime
Default value:
Off
Range of adjustment:
Off, 1 to 127
With Portamento active, notes played sequentially glide from one to the next, rather than
immediately jumping to the desired note pitch. The synth remembers the last note played
and the glide will start from that note even after the key has been released. The PortTime
is the duration of the glide, and a value of 115 equates to approximately 1 second.
Portamento is primarily intended for use in a mono Mode (see PortMode below), where
it is particularly effective. It can also be used in a Poly mode, but its operation can be
unpredictable, particularly when chords are played. Note that PreGlide must be set to zero
in order for Portamento to be operative.
Parameter:
Portamento Mode
Displayed As:
PortMode
Default value:
Expo
Range of adjustment:
Expo or Linear
This sets the ‘shape’ of the Portamento and PreGlide (see following page) transitions from
one note to the next. In Linear mode, the glide alters the pitch evenly between the previous
note and that being played. In Expo mode, the pitch changes more rapidly at first, and then
approaches the ‘target’ note more slowly, i.e., exponentially
.
