Sample Editing - GEM GPS3600 Owner's Manual

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Sample Editing

EDIT (F6)
The Edit option opens a display showing non-
programmable information relating to the origi-
nal sample, and gives access to some program-
mable parameters which allow you to change
some characteristics of each individual sample.
The first four items of the display correspond to
the sample information:
SAMPLE NAME: Shows the original name of the
wave sample.
SAMPLE TYPE: Identifies the sample format.
PROPERTIES: Shows the technical character-
istics of the sample.
SAMPLE SIZE: Shows the size of the sample
expressed as the total number of samples.
The remaining items of the display correspond
to settings for the sample assigned to the cur-
rently selected key range. All these parameters
are programmable.
SAMPLE PITCH: Indicates the pitch at which
the sample was originally recorded. This param-
eter also defines the Root Key number, or the
key where the sample root for the current key
range is assigned.
If the PS/GPS does not recognize the Sample
Pitch of a sample you've loaded from disk, you
can use this parameter to specify the key which
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will play the sample at its normal pitch (the pitch
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at which it was sampled). To help you with this
operation, use the Tuning function, activated with
the F1 soft button, which plays the original sam-
ple pitch with a sinusoidal that is superimposed
on the sample.
You can also use this parameter to make the sam-
ple play its normal pitch on a different key from
the one to which it was assign when it was re-
corded. This, however, will pitch shift the sam-
ple and change its playback rate, which can af-
fect the timbre of the sample.
SAMPLE RATE: This parameter defines the fre-
quency with which the Sample is read. If the
Sampling Rate is modified, the sample pitch is
also proportionally modified. For example, if the
Sample Rate is raised in value, the sample pitch
will also become higher.
Basically, this function provides a fine tuning for
the sample, avoiding dissonance between the
samples that make up the Waveform.
LOOP START: This parameter causes samples
to replay indefinitely until you release the note,
or they decay to silence. Each sample, when
triggered, begins at the Loop Start point and plays
through to the Loop End, then loops to the Loop
start point and plays again. This cycle will con-
tinue until the note is released. If the Loop Switch
is set to Off (see below), when the sample plays
to the Loop End on its first cycle, it stops when it
reaches the Loop End.
Changing the Loop Start (and Loop End) points
can have a small or great effect on the sample
timbre, depending on the nature of the sound at
the Loop Start point. You may hear a click as the
sample loops back from the Loop End to Sample
Start. In such cases, vary the Loop Start value
until you reduce the click to an acceptable value.
LOOP END: This parameter represents the end
of the current sample and the point where the
sample, once played, loops back to the Loop Start
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Sample Translator 2•51
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