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Basics
of
the
S01
Through
a simple
operation, the
SOI can
digitally
record
any sounds
—
pianos,
string
instruments,
percussive instruments
and
other acoustic instruments,
and
then
clearly
play
back
those sounds.
Not
only
instruments,
even
noise
—
wind,
rain,
machinery,
etc.,
can be recorded and transformed
into
sound
you have
never
heard.
This wonderful technology
in
a
word
is
sampling.
Once
you sampled
sounds,
you can
simply
play
them
using a
MIDI
keyboard,
as they
are.
On
the
other
hand,
you
can
edit
or arrange
them
into
another synthesized
tone.
Using
a tone arranged
like that,
the
SOI
may
work
as
an
8
polyphonic
multi-timbral tone generator.
It
is
important
that
you
grasp
some
basics of
sampling
technology.
What
is
Sampling?
Briefly,
sampling
is
transformation of
an analogous
waveform
(audio
signal) into digital data,
generally
using a procedure
comprised
of:
Sampling
process:
Recording
the level
of
an
electric
signal
(analogue
waveform)
every
specific
period.
The
specific
period
is
determined by
the
"sampling frequency
(FS)".
The SO
l's
sampling frequency
is
fixed
at
32
kHz
and
will
sample an audio
signal
every 1/32,000 second.
Also,
each sample's
signal level
is
determined
by
"sampling
resolution".
The
SOl's sampling
resolution
is
16
bits
and
it
will
record
each
signal level in
65,536
steps
(=2
8
=16
bits).
Therefore
the
SOI
is
able
to
capture
subtle
changes
in
the original
audio
signal.
Quantizing
process:
Arranging
a
number
of recordings
obtained
in
sampling
process appropriately
in the
memory.
This has
to
be done because
the original
waveform
has
been
divided
into
thousands of
"pieces"
in
sampling
process.
Unless
those pieces
are
arranged
in
recorded
order,
it
cannot be
correctly
reproduced.
Encoding
process:
Transforming
the
level
of
each recorded
piece
to
an
appropriate binary
digit
so
that
it
can be recognized
or
handled
by
the
SOI
These
processes
are tasks
of
an
analogue-to-digital
converter
(ADC).
The
encoded
waveform
data
will
finally
be
sent to
memory
and can be
edited or arranged.
When
the
digital
waveform
is
played back,
it
is
processed
by
digital-to-analogue converter
(DAC)
and
output
as
an analogous
waveform
(audio
signal).
#
Banks
The
SOI
contains eight banks. Into these
banks
you
are free
to
sample sounds
or load
information
from
a
sound
library disk.
Also,
you
can
edit
samples
by bank
using a
wide
variety
of parameters
—
loop,
level,
pitch,
or
MIDI
options,
etc.
01
02
03
04
OS
0(
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OS
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i
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s
i
/
UlflJ
parameters
TRiM/LOOP/LEVEL/PlTCH/
P
MiDI/SETUP/DlSK
*
The
SETUP
parameters
are
used
for
general setup
for
the
S01
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