AKG BX20E User Manual
AKG
REVERBERATION
BX20E
UNIT
AKG
REVERBERATION
UNIT
BX
20E
Modern
pensable
reverberation
characteristics,
of
producing
While
some.
the
The
recording
in
instruments
high-quality
1.
2.
producing
To
obtain a range
re-recording
reverberatory
studio
added;
or
the
the
the
techniques
operations.
even
often
process
use
the
performance
reverberation:
echo
room
reverberatory
highest
of
is
plate
provides
have
With
those
done
additional
plate
sound
decay
susceptible
made
the
few
on
location
reverberation
as a whole.
quality,
times,
to
a
simpler
use
of
exceptions
There
the
echo
several
vibration
means
artificial
most
in
halls
to
are
chamber
rooms
and
of
producing
musical
with
enhance
currently
have
noise.
reverberation
recordings
excellent
individual
two
is
expensive
to
be
constructed
artificial
indis-
have
acoustic
groups
methods
and
reverbera-
of
cumber-
and
tion
albeit
considerably
often
large
in
great
of
often
beration
stud
A
deliberately
size
outdoor
variety
running
impossible
io.
portable
with
longer
and
weight
recording
of
special
unit
that
reverberation
slightly
than
with
used
in
and
or
with a mobile
acoustically
cables
because
is
of
portable
unit
lower
resultant
to
sound
natural
recording.
different
the
distance
yet
may
quality.
reverberation,
The
immovability.
van,
recording
plate
and
meets
be
developed
located
major
as
location.
all
the
1
Decay
disadvantage
This
the
sound
problems.
in
the
Hence
quality
on
the
time
but
this
has
engineer
studio
AKG
requirements
basis
at
higher
characteristic
of
proved a great
The
is
developed
of
the
frequencies
the
plate
has
to
customary
very
expensive
following
cope
a new
for
is
is
its
handicap
with
practice
rever-
use
in
techniques:
is
a
and
the
a)
b)
c)
d)
production
recorders
production
mechanical
use
at
present
production
storage
production
torsion
of
artificial
of
artificial
plate
of
artificial
technique
of
artificial
transmission
that
reverberation
reverberation
is
much
reverberation
reverberation
line
(TTL)
smaller
by
by
than
using
by
means
means
the
electronic
means
of
of
one
of
tape
a
in
a
After
offers
space
some
critical
the
requirements
prejudices
beration
quirements.
When
judging
ways
uses
theory
a
following
ation
device
best
produced
the
the
natural
natural
essential
irrespective
1)
high
2)
high
consideration
means
in
for
are
small
connection
by
various
quality
room
room
exhibits
characteristics
density
pulse
of
all
the
realization
and
construction
with
types
of
reverberation
as a standard.
a
highly
of
the
means
of
resonance
density
to
these
this
of
coil
which
used:
duplicate
techniques,
of a portable
is
method
must
springs
the
listener,
From
complex
must
be
frequencies
the
AKG
reverberation
relatively
be
overcome
has
not
in
the
viewpoint
transmission
met
by
many
sound
has
economical.
met
the
pattern
any
artificial
paths
decided
as
so
studio
final
of
analysis,
communication
with
that
unit,
However,
far
rever-
quality
the
reverber-
TTL
as
re-
al-
3)
high
ranges
4)
reverberation
sound
5)
frequency
extremes
6)
a
cies,
7)
practical
degree
decay
-
time
while
i.e.
of
statistical
no
regularity
must
response
frequency
at
high
applications
start
that
20
falls
response
frequencies
require
diffusion
must
to
slightly
2
in
exist
50
milliseconds
that
has a slight
a
slight
variability
the
in
the
at
the high
fall
frequency
two
after
is
of
decay
and
ranges
the
and
rise
desirable
time
time
concerned
original
low
frequency
at
low
frequen-
We
The
can
high
use
density
the
technique
of
resonance
of
TTL
to
frequency
meet
these
requires
criteria
very
in
long
the
coil
following
spring
way:
elements.
L-
According
milliseconds
and
picked
resonance
~F
This
~
T
distance
density
delay
possible
development.
changes
in
described
to
experience,
from
up
at
the
frequency
~F
of
of
time
density
The
density
later.
beginning
other
of
0.6
I
two
adjacent
resonance
of
excellent
and
distribution
their
to
end
length
end.
of
based
poles
frequency
natural
reverberation
should
Provided
the
spring,
upon
the
where
in
resonances
of
these
formula.
the
frequency
is
quality
correspond
that
the
this
length
~F
the
starting
is
natural
to a delay
signal
yields
I
2T
spectrum
point
brought
resonances
is
about
by
time
fed
a
density
for
by
means
of
into
all
certain
300
one
of
further
which
end
are
:y
len-
In
order
the
time
of
the
spring.
The
onset
ing
circuit
be
explained
The
frequency
internal
rise
by
means
spring
in
to
obtain
and
of
based
friction
the
low
of
mechanical
the
high
frequency
statistically
reverberation
on
the
in
detail
response
of
the
frequency
pulse
range,
by
after
statistical
later
of
on.
the
spring.
response
damping.
density
it
is
necessary
changing
20
to
transmission
reverberated
Mechanical
of
the
The
frequency
as
well
the
mass
50
milliseconds
signal
vibrating
reverberated
3
as
to
vary
and
properties
is
response
the
statistical
the
transmission
spring
is
elements
effected
determined
systems
signal,
depends
of
the
primarily
generally
which
on
diffusion
in
properties
along
the
coil
by a compensat-
coil
and
will
by
the
display
can
be
corrected
the
mass
of
the
a
transducer
From
the
way
the
This
additional
system
users
maximum
and
viewpoint
number
damping
the
spring
a
of
applications
is
parameters
linear
necessary
frequency
is
because
as
well
response
possible.
variation
as
is
on
most
of
the
desirable
decay
internal
time
friction.
as
which
in
this
is
based
only
provided
show
The
the
with
Depending
the
Having demonstrated
given a rough
tion
on
the
principle
permits a limited
mechanically.
the
longest
motional
transduction
the
mass,
unit
feedback
proper
on
the
compliance
outline
BX
20E
phasing,
of
control
decay
to
desired
developed
time
principle
an
analogues
and
the
of
motional
This
means
desired.
and
the
phase
friction
feasibility
the
various
by
AKG
feedback
range
and
and,
accordingly,
that
the
consists
electrical
electromechanical
frequency
of
will
of
the
mechanical
of
the
measures
be
TTL
described
and
carried
electronically
the
pickup
signal,
response,
used,
for
the
feedback
system.
high
the
in
out
at
initial
undamped
of
the
mechanical
amplification
to
we
can
in
quality
portable
detail.
the
spring
damping
the
this
reverberation
studio
must
system
of
pickup
way
ends,
be
must
signals,
the sig
system,
establish
and
reverbera-
nal
The
BX
main
The
BX
channel
inputs
20E
is
parts:
1)
2)
3)
20E
is
allowing max
can
be
based
the
the
the
a two
paralleled,
on
the
electromechanical
electronic
elastic
channel
imum
principle
circuits
support
unit
flexibility
and
either
of
reverberation
with
independent
in
channel
torsion
stereophonic
transmission
can
be
4
unit
control
or
used
and
proper
of
decay
monophonic
separately.
consists
time
use.
of
of
each
The two
three
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