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BASIC OPERATION
!STRUCTURE
OF THE MIRI
4-Channel Digital Audio Signal (internal routing)
4-Channel Audio Output
SYNTHESIZER
A
-
EFFECT SECTION
SECTION
B
-
Dual system stereo effects
Maximum of
8
Programs
c
-
(sound
colors), 16 voices
D
-
t
8-Channel Sequencer Play Data
SEQUENCER SECTION
8
tracks
k1
SYNTHESIS SYSTEM
J
1/L ..___ -
2/RE-
3
-
4
-
The AI (Advanced
integrated)
synthesis system of the MIR makes it possible to
combine
all various
sound
types
--
from conventional synthesizer sounds
to
sampled sounds and drum sounds.
For sampled sounds, the
large-capacity
PCM data memory of
16
bit x
2
mega-words, far greater than that
of
conventional samplers, has been utilized,
and
a carefully selected
group
of Multisounds
(a sound
whose original
wave shape has been multi-sampled
1 )
has been installed.
For
its
synthesizer sounds, not only the
D.
W.G.S. waveforms
2 ,
which
are
produced by
a
process much the
same
as that of
an
analog synthesizer, but also aperiodic or
irregular
waveforms created by
extraction
of harmonically
unrelated frequency components
3
are part of the M lR
'
s
structure.
As a result, creation of new and
unique
sounds
beyond the existing limitations of the conventional synthesizer is possible.
Processing any of the programs or individual
sounds
with the use of
VDFs
(Variable Digital Filter) and
VDAs
(Variable Digital Amplifier) is, of course,
possible.
Moreover, different effects can be
assigned
to specific
programs
in
a configuration of
2
systems and
2
channels through theMlR's MDE (Multi Digital Effect)
feature
when playing Multisounds. With the use of these functions, total
control
over
all aspects
of sound
creation,
including effects, is possible.
1
Multi Sampling
The harmonic structure
and
overtones present in high pitched sounds usually differs from
that
of
low
pitched
sounds, even in the same musical instrument. Multi Sampling is
a method
to
recreate those
characteristics by
sampling an instrument
repeatedly
over
a range
of many octaves.
2
D.W.G.S. (Digital Waveform
Generator
System) Waveform Data
The instrument sound is reproduced by the following process
:
Computer
analysis
determines the frequency
components of the sampled instrument sound
and
reproduces them by
creating a
harmonic table for them
as
is
done in additive synthesis.
3
Extraction of
Harmonically
Unrelated Frequency
Components
Separates
the aperiodic
and
harmonically
unre lated
components characteristic
of
such
sounds as objects
being
hit or scraped from
the
sampled wave shapes.
6
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