7
3) EG INTENSITY
This controls how much the cutoff frequency is varied by the EG. It also determines whether the filter is swept up
(positive modulation) or down (negative modulation) during the attack phase of the EG. Maximum seep depth is
plus or minus 10 octaves. Wide sweep depth are usually associated with dramatic effects, "electronic" lead bass
sounds, clav type sounds, etc. Small sweep depths are often used to add a subtle extra dimension to more
"natural" sounds like french horn, woodwinds and other orchestral sounds. However, there are certainly no hard
and fast rules and anything that sounds good to you should be used freely.
4) KBD TRACK
This controls the degree to which the filter "tracks" the keyboard, over a range of approximately 0% to 150%.
Keyboard tracking is an extremely useful function in which the VCF is made to "follow" the note as it is played on
the keyboard. This produces more even and realistic sounds by insuring that the tonal quality (timbre) of a given
sound remains constant over the full 5 octave range (100% tracking). Without keyboard tracking, a given sound
played at "C" would sound bright and buzzy at the lowest "C", and muted or even non-existent at the highest "C".
The Polysix also allows deliberate over- and under-tracking. This produces smooth and controlled tone quality
changes as you move up and down the keyboard, for special effects, or to simulate instrument with changing
timbres (e.g., many orchestral and keyboard instruments). At settings of approximately "7", the VCF follows the
note on a 1 for 1 basis (100%). Below 7, the VCF in effect "legs behind" the note played; this causes notes to
sound brighter as you go down in pitch, and rounder or mellower as you ascend. Conversely, at settings above 7,
the VCF cutoff increases "faster" than does the keyboard pitch, which causes notes to sound brighter as you go up
in pitch and darker as you go down. The further the control is from 7, the more pronounced this tonal change will
be.
When the VCFs are self-oscillated and used as sound sources, the KBD TRACK control allows you to "play" the
filters from the keyboard as if they were regular oscillators (100% tracking). Additionally, special scales known as
Microtonal (e.g., "quartertone") and Macrotonal can be created at settings less than, or greater than 7,
respectively.
Variable keyboard tracking is extremely useful in producing realistic instrumental sounds, and in helping to
make any particular program sound good over a full five octave keyboard range.
MG (with MOD switch set to VCF)
This provides repetitive filter modulation or automatic "waa-waa" effects. Low settings of the MG LEVEL control
can give a subtle but very useful animation to the sound.
External control voltage (MS-01 pedal, etc.) applied to VCF fcM IN jack (nominal sensitivity is 1V/octave).
To Next Page
Loading...
Need help?
General
