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Sony STR-D1090 - Understanding SOUND FIELD Program Characteristics; Sound Propagation Concepts; Sound Field Program Descriptions

Sony STR-D1090
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Adjusting
the
SOUND
FIELD
rel
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The
sound
heard
in
a
place
such
as
a
concert
hall
or
a
movie
theater
consists
of
direct
sound,
and
early
reflected
sound
(early
reflections)
and
a
reverberative
sound
(reverberation),
The
acoustics
of
the
room
affect
the
way
these
three
sounds
are
heard.
We
can
estimate
the
size
or
the
type
of
a
hall
by
listening
to
and
differentiating
these
three
kinds
of
sound.
The
STR-D2090/STR-D1090
reproduces
the
early
reflections
and
the
reverberation
using
its
digital
signal
processor
and
allows
you
to
design
a
variety
of
sound
field
in
your
own
room.
The
unit
incorporates
10
types
of
the
SOUND
FIELD
program,
and
you
can
select
the
desired
SOUND
FIELD
mode
by
pressing
the
SOUND
FIELD
button.
Also
you
can
adjust
several
parameters
within
each
mode
to
maximize
the
effect
in
your
listening
room.
Types
of
the
sound
;
Reverberation
Early
reflections
The
sound
transition
of
the
direct
sound,
early
reflections
and
reberveration
can
be
illustrated
as
below:
Transition
of
the
sound
Direct
sound
Early
reflections
Reverberation
eae
Ree
+]
Early
reflection
time
Note
Each
surround
mode
has
several
internal
(fixed)
parameters
in
addition
to
the
adjustable
parameters
explained
in
this
section.
Therefore,
surround
modes
will
not
become
the
same
even
if
you
set
all
adjustable
parameters
the
same.
34
_
.
|Decodes
programs
‘|
processed
with
the
Dolby
|
surround.
|
Adds
the
reflection
of
a
{theater
to
decoded
signals
of
the
Dolby
|
prologic
decoder.
Adds
the
reflection
of
a
:
large
concert
hail
to
decoded
signals
of
the
-
|Dolby
prologic
decoder.
'|Reproduces
the
acoustics
of
a
rectangular
concert
“J
hall
with
soft
sound.
It
is
«effective
for
playing
a
|
program
source
with
hard
»|sound.
_-
{|The
equalizer
boosts
high
{and
low
frequencies,
and
_
{the
dynamic
sounds
are
‘|
reproduced.
-|Reproduces
the
acoustics
|
Of
a
live
house,
adding
a
..|
Sharpness
to
sounds.
_
|
Reproduces
the
acoustics
--.
1of
an
opera
house,
--../
keeping
the
clearness
of
«|
the
vocal
music.
-
-|Reproduces
the
acoustics
tof
a
church
made
of
wood
~.|
Reproduces
the
acoustics
"|
of
an
outdoor
stadium
with
~.|a
long
pre-delay
time.
It
is
|
effective
for
playing
a
|
program
source
recorded
in
a
stadium.
Characteristics
of
the
SOUND
FIELD
program
Dolby
surround
software
medium-size
orchestra
or
classic
—
Baroque
music,
string
orchestra
or
choral
group
Pops
or
rock
music

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