Program Edit Mode
The KEYMAP Page
7-23
Timbre Shift
This parameter works only on multi-sample keymaps, and changes the root selection for
each key you play. With this parameter you can radically alter the current layer’s timbre
(basic sound characteristics). The nature of the change depends on the timbre itself, so this
parameter calls for experimentation. Basically, timbre shifting changes a note’s timbre by
imposing different harmonic qualities onto the note. A timbre-shifted note retains its original
pitch, but its harmonics are those of the same timbre at a higher or lower pitch. Positive
values for this parameter tend to brighten a sound, while negative values darken.
Here’s an example. If you shift the timbre up 4 semitones, then playing C 4 will result in
the pitch C 4, but will actually play the sample normally assigned to G
#
3, and shift its
pitch up four semitones. This will increase the playback rate of the sample, so although the
pitch remains normal, the timbre is brighter. You’d get the same effect by setting the Xpose
parameter on the KEYMAP page to -4 semitones, then setting the Adjust on the PITCH
page to +4 semitones. For multi-sample layers with narrow key ranges, large amounts of
timbre shifting will cause different sample roots to be played back.
Playback Mode
This gives you numerous options for manipulating the samples in the current layer as you
trigger them. Normal leaves the samples unaffected, while Reverse plays them in reverse.
At a value of Reverse, the samples will continue to loop as long as notes are sustained. To
play them just once in reverse, you would adjust the length of the layer’s amplitude envelope
(explained later in this chapter). BiDirect (bidirectional) causes the samples to loop infinitely,
alternating between normal and reversed playback. Noise replaces the samples with a white
noise generator.
Alternative Controller (AltControl)
See
Alternative Switch (AltControl and AltMethod)
below.
Alternative Switch (AltControl and AltMethod)
Many, but not all, Forte SE sample roots have been pre-assigned a carefully chosen alternate
sample start point that can be selected using the Alternate Switch feature (AltControl and
AltMethod parameters). This feature allows you to control the sample playback start/end
time triggered by any control source. (The alternate sample start point can be adjusted by
for
details).
