• All of the tabs on the Amp page, except for EQ
• All of the tabs on the LFO page, except for
• The AMS Mixer tabs
You can use the page menu's Copy Oscillator
command to copy these parameters from one
Oscillator to another. You can even copy parameters
from an Oscillator in a different Program.
This command is useful when you want to set both
Oscillators to the same settings, or when you want to
duplicate settings you've used before.
Working with Multisamples
The sound of the HD‐1 starts with one or more
Multisamples. These can be recordings of instruments
like piano, bass, guitar, strings, organs, analog synths,
and so on, or purely digitally‐created timbres.
You can use these Multisamples directly, or use them
through Wave Sequences, which play a series of
different Multisamples over time to create rhythms or
complex, evolving timbres.
In Single and Double modes, each Oscillator can play
up to four Multisamples or Wave Sequences. In Drum
mode, there is one Oscillator, and it plays a single
Multisamples, Wave Sequences, and Drum Kits
Multisamples, Drum Kits, and Wave Sequences allow
you to play samples in different ways.
• Multisamples lay out one or more samples across
the keyboard. For instance, a very simple guitar
Multisample might have six samples–one for each
• Wave Sequences play back a series of different
Multisamples over time. These Multisamples may
crossfade to create smooth, evolving timbres, or
change abruptly to create rhythms.
• As the name suggests, Drum Kits are optimized for
playing drum samples.
Velocity splits, crossfades, and layers
As mentioned above, unless you're in Drum mode,
each Oscillator has four velocity zones, named MS1
(High) through MS4 (Low). This means that the
Program can play different Multisamples or Wave
Sequences, depending on how hard you play.
Each of these zones has separate settings for Level,
Start Offset, and so on. Also, each of the zones can fade
into the next, to create smooth velocity transitions.
Zones can even be layered together, two at a time.
Let's create a simple velocity crossfade between two
Multisamples, using just OSC1.
1. Go to the OSC1 Basic tab of the OSC/Pitch page.
2. Set the MS1 and MS2 Type parameters to
Detailed Editing with HD-1 Programs
3. Set the Types for MS3 and MS4 to Off.
4. Select ROM Stereo as the Multisample Bank for
MS1 and MS2.
There are three main types of Multisample Banks:
ROM, RAM, and EXs. For each type, you can also
choose between looking at mono and stereo
Multisamples. Note that stereo Multisamples will
require twice as many voices as mono Multisamples.
ROM Multisamples are the built‐in "factory" sounds,
and are always available. These are organized by
category, such as pianos, guitars, bells, etc.
RAM Multisamples include Akai, AIFF or WAV files
loaded from disk, and samples created in Sampling
EXs Multisample banks are PCM expansion sets
created especially for the OASYS. Each has its own
unique number; for instance, the ROM Expansion
option is EXs1, and the Concert Grand Piano option is
EXs2. Only the currently loaded EXs banks will appear
in this menu.
5. Press the Multisample popup for MS1.
This brings up a list of Multisamples, organized by
category. Use the tabs at the left of the screen to browse
through the different categories.
6. Select a Multisample by touching its name in the
7. Press the OK button to confirm your selection.
8. Do the same for MS2.
Now that you've assigned Multisamples to MS1 and
MS2, let's set up the velocity ranges and crossfades.
9. Set MS2's Bottom Velocity to 001, and its Xfade
Range to 0.
10.Set MS1's Bottom Velocity to 80.
Now, MS2 will sound when you play softly, at
velocities of 79 or less–and MS1 will sound when you
play harder, with velocities of 80 or more.
You can also see this split visually, in the graphic on the
right side of the LCD.
11.Next, set MS1's Xfade Range to 20, and its Curve to