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MAGNETIC
TAPE ....
Usually
1//'
plastic
tape
which
has
been coated with an emulsion of iron oxide particles.
Used on tape recorders
as the recording
media
and
is
the highest
fidelity
of
reproduction
possible today.
MIL
....
1/1 ,000
of an
inch.
Tape
thickness
is usually
measured
in
mils.
MIXER
....
A device
by which signals
from two
or more
sources
can
be combined
and fed
simultaneously
into
a tape
recorder
at the proper
level
and balance.
MiXiNG
....
The blending of two or more signals for special
effects.
MONITOR
HEAD
....
The
head
on
a tape
recorder
which,
when
connected
to
the
proper
circuitry,
makes
it
possible
to listen
to
the
material
directly
off the tape
while the recording
is
being
made.
MONOPHONIC
RECORDER
....
Sometimes
incorrectly
called
monaural
recorder.
It is capable
of only one
channel
recording.
MULTiPLEX ....
(see FM Stereo.)
NAB CURVE
....
Standard
playback
equalization
curve
set
by the
National
Association
of Broadcasters.
"
OSCILLOSCOPE
....
A
device
which
forms
a
graphic
repre-
sentation
of
an
electrical
signal on a screen (cathode
ray tube).
Used for testing
and
measuring
of
elec-
trical and elecronic
equipment
(tape
recorders).
OUTPUT ....
The signal
voltage
coming
from components,
such as pre-amplifiers
and
amplifiers.
In
tape
re-
corders,
there
are
line outputs,
speaker
outputs
and
monitor outputs.
OXIDE
....
As
used
in magnetic
tape-a
microscopic
ferrous
oxide.
PATCH CORD
....
A
short cable with a plug at either
end
used
to interconnect
equipment,
such as
tape
re-
corders
and
amplifiers.
PHASING ....
The
proper
polarity
orientation
of
the
two
speakers
used
in
stereo
playback;
proper
phasing
would be, for example,
the ground
connection
being
common to both speakers.
PINCH
ROLLER
(Pressure
Roller) ....
A
rubber
roller which
engages
the capstan
and pulls the tape with constant
speed
and prevents
slippage.
PLAYBACK ....
Reproduction
of the
sound
previously
re-
corded
on the tape.
PLAYBACK HEAD
....
The
magnetic
head
which
picks up
signals
from
tape for playback.
(
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