Roland S-330 Owner's Manual page 177

At higher
sampling
frequencies, the sampling time
is
shorter,
but the
audio
quality of the
sample
is
better.
On
the other hand,
at
lower sampling frequen-
cies,
longer
samples
are
possible,
but the audio
quality of
the
sample
is
slightly
lowered.
Input
Wave
form
Converts the
levels
of a
wave
into
digital
signals.
I
Roland
S
Series' Dl Systefii
^Mt^ffelf;,
^\:>f
The Roland S
Series
Samplers adopt the Dl system,'
which
is
a
new
technology invented
for,
resolving
noise generated
while
sampled
data
is'
"being
played.
A
sampler,
different
from
a.
CD
player,
should
reproduce samples
at
various pitches.
Many
samplers change
pitche
by changing
frequency,
but the
Roland
S-series
Samplers
play the
sampled
data by changing
the
intervals.
This
is
called the
fixed
sampling method.
In
fixed
sampling; the gen-
erated noise
can be
cut
at
a certain
frequency
band
using a sharp
digital
filter,
resulting
in
suc-
cessful playback
of
the
original
sound
without
affecting the
harmonic
contents.
'
'.'.'-
.;
Noise contents
The
Digital Filter
sharply cuts the noise.
.
.The
most
important
element
of
the Dl
technology
is
jhow"
to
achieve a
correct calculation of
the
interval
' points.
The
S-series
can
perform high
speed
calcu-
lations,
supplying imaginary
point data.
This
makes
the
interval setting
extremely accurate, therefore,
noise
is
greatly reduced,
resulting in
high
quality
sounds.
Not
inter
polate
Differential Inter polation
(Dl
technology)
Unear
Inter polation
S-330 GUIDE
BOOK
11