Appl ications
Spectrograms
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
70
Sound...................
.
........
.
...
.
...
....
.......
....
.
......
70
Vibration
........
........
...............
..
..
.
..................
74
Electrical
Signals
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
75
Dynamic
Strain
Gage
Measurements
.
........
.....
...
..
...........
76
Automatic
Recording
of
Frequency
Characteristics
....................
78
Frequency
Response
of
a
Filter
Circuit.
. . . . . . . . . . . . . . . . . . . . . . . . . . 78
Frequency
Response
of
High-Quality
Amplifiers.
. . .
..
. . . . . . . . . . .
..
80
Frequency
R
espo
nse
of
Loudspeaker
(
Twe
e
ter
)
.......
.
...
.
.........
81
Frequency
Response
of
Hearing
Aids.
. . .
..
. .
.. .. ..
..
. . . . . .
..
..
...
82
Two
Channel
Recording
of
Acoustic
Signals
.....
.
....
...
.............
84
Automatic
Recording
of
Directional
Characteristics
.....
.........
......
87
Directional
Char.\cteristics
of
Loudspe
ak e
rs
..
...
.
...
...
.....
.
....
88
Directional
Characteristics
of
Antennae
.....
...
..................
89
Recording
of
Vibrations
..
........
.....
.
.....
..
...
..
....
....
.
.......
90
Automatic
Recording
of
Accelerometer
Frequency
Response.
. .
.....
91
Recording
Vibration
Sensitivity
of
Electronic
Instruments.
. . . . . . . . .
91
Vibration
Isolation
.
...............
.
...........
......
..
.
.........
93
Measurement
of
Reverberation
Time
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
96
Automatic
Examination
of
Sound
Recording/Reproducing
Systems
......
103
Frequ
e
ncy
Response
of
Monophonic
Tape
R
eco
rders
....
. .
....
....
103
Frequency
Response
and
Cross-Talk
Measurements
on
Stereophonic
Systems
.
.....
.
........................
....
....
.......
..
..
..
105
Frequency
Response
of
Monophonic
Micro-groove
Reproducing
Heads
.......................................•.............
107
Complex
Modulus
Measurements
.....................................
108
Damping
Factor
Reading
with
Q-R
ule
...........................
110
Recording
of
Strain
Gage
Measurements
..............................
112
Recording
of
Static
,
Quasi-Static
and
Low-Frequency
Dynamic
Measurements
...
.....
.
...............
.
.........
..
.........
• 112
Recording
of
Multipoint
Measurements
..........
...
...
...
.
....
...
114
Frequency
Analysis
with
Digital
Readout
..
. .
..
..........
....
....
.
...
116
69
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