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Keymap and Sample Editing
Building a Keymap
Building a Keymap
Read below for detailed directions on manually creating and editing a keymap. (See the preview
function on page 11‐17 for a way to automatically create a program and keymap.) To build a
keymap, first go to the Program mode main page (this can be done by repeatedly pressing the
Exit button.) From the Program mode main page, use the alphanumeric pad to select program
999 Default Program. Next press the Edit button to enter the Program Editor. Press the
KEYMAP soft button, and the KEYMAP page will appear. The Keymap parameter will be
automatically selected. Press 999 and Enter on the alphanumeric pad to assign the keymap 999
Silence. This isn't absolutely necessary, but it makes it easier to recognize the key ranges that
have samples assigned to them when you start assigning samples. You can actually choose any
program or keymap you want to start with, but by choosing these, you are starting with a
"blank slate."
With the Keymap parameter still selected, press the Edit button, and you'll enter the Keymap
Editor. The Key Range parameter will be automatically selected, and you see its values: C 0 to
G 10 (the entire MIDI keyboard range). The Sample parameter will have a value of
999 Silence‐C 4.
Now you're ready to start assigning samples to key ranges within the keymap. We'll assume
that you've loaded samples with roots at C 1, C 2, C 3, etc. and that you plan to assign a root to
each octave. To begin, press the Assign soft button. The display will prompt you to select a
sample. Use the Alpha Wheel to scroll to one of your samples, or type its ID on the
alphanumeric pad and press Enter. When you've found the sample you want to use, press the
OK soft button. The display will say "Strike low key..." Trigger A 0 (MIDI note number 21, the
lowest A on a standard 88‐note keyboard). The display will change to say "Strike High
Key..."Now trigger F 1 (MIDI note number 29). The display will return to the Keymap‐editor
page. The Key Range parameter will show A 0–F 1, and the Sample parameter will show the
sample you selected when you started the range assignment.
Each sample in a key range is automatically transposed based on each sample's RootKey
parameter so that it plays at the correct pitch on the keyboard relative to its root key (see Editing
Samples on page 14‐9 for details on the RootKey parameter.) Other keys within the key range
transpose the sample chromatically relative to the root key. Automatic transposition based on
each sample's RootKey is important if you want your sample to play in tune with other PC3K
programs or other instruments. The PC3K makes this easy if your samples have the correct
RootKey settings (as the PC3K's factory samples do.) Generally you should set a keyrange so
that the sample's RootKey (displayed at the end of the sample name) is in the middle of the
range. If you set a key range that does not cover the sample's RootKey, the sample will have to
automatically transpose by many semitones, and will likely not sound correct. Samples are also
limited to an octave of upward transposition from the sample's original pitch. If you set a
keyrange too high based on the Root Key, some samples may not be able to transpose upward
far enough to play in tune, and many keys may play the same note (the highest note that the
sample can be transposed to.) Automatic transposition relative to the root key can be offset
using the Coarse Tune and Fine Tune parameters on the EditKeymap page, (see Coarse Tune and
Fine Tune on page 14‐4.)
Continuing with the example, press the Assign soft button again. Select another sample root at
the prompt, and press the OK soft button. Now trigger F# 1 for the Low Key prompt, and F 2 for
the High Key prompt. At this point you've defined two key ranges, the first from A 0 to F 1, and
the second from F# 1 to F 2. You can repeat the process as many times as you want, creating a
new key range each time.
Once you have your samples assigned, you may need to transpose them so that they play back
at the correct pitch within the range you have chosen. To do this, highlight the Key Range
parameter, scroll to the range you need, then highlight the Coarse Tune parameter. Adjust
Coarse Tune to bring the sample to the proper pitch within that key range. Then scroll back up
to the Key Range parameter, select the next range, and continue as needed.
14-7
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