KORG M3 - Manual (Page 65)

Detailed Editing with Programs Using Filters
57
Quick Start
Introduction
Setup
Program
Combination
Sequencer
Sampling
Global
Media
Effect
KARMA
Drum Track
Other
Appendices
Portamento
Portamento makes the pitch change smoothly when
you play the next note before releasing the previous
note.
The Time parameter controls how long it take the pitch
to change. As this value is increased, the pitch will
change over a longer time. With a value of 000, there
will be no portamento.
You can turn Portamento on and off via SW1 or SW2,
by assigning them to Porta.SW CC#65.
Using Filters
The filters allows you to diminish or emphasize
specified frequency areas of the sound.
The tone of the sound will depend significantly on
the filter settings.
The basic filter settings, including the routing, type,
cutoff frequency, and resonance, are set on the P3–1:
Filter1 or P3–2: Filter2 page.
Filter Routing
Each oscillator has two filters, Filter A and Filter B. The
Filter Routing
parameter controls whether one or both
of the filters are used, and if both are used, it controls
how they are connected to each other.
The Single routing uses only Filter A as a single 2-pole,
12dB/octave filter (6dB for Band Pass and Band
Reject).
The Serial routing uses both Filter A and Filter B. The
oscillator first goes through Filter A, and then the
output of Filter A is processed through Filter B.
Parallel also uses both Filter A and Filter B. The
oscillator feeds both filters directly, and the outputs of
the two filters are then summed together.
The 24dB(4Pole) routing merges both filters to create a
single 4-pole, 24dB/octave filter (12dB for Band Pass
and Band Reject). In comparison to Single, this option
produces a sharper roll-off beyond the cutoff
frequency, as well as a slightly more delicate
resonance. Many classic analog synths used this
general type of filter.
Serial and Parallel Routing
Filter A (Low Pass) Oscillator
Serial
Parallel
Filter B (High Pass)
Oscillator
Filter A (Low Pass)
Filter B (High Pass)