Application; Automatic Recording Of Harmonics In Earphones - BRUEL & KJAER 4152 Instructions And Applications
Artificial ear for measurement on earphones as used in hearing aids and telephone communication systems. provided with couplers made in accordance with the leg recommendation 126, and various american and german standards.
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3.
Application
Automatic Recording of Harmonics in Earphones.
By using the Artificial
Ear
Type
4152 together
with
an oscillator with a
low
distortion, such as the B
&
K Beat
Frequency
Oscillator Type 1022,
and
the
Audio
Frequency
Spectrometer 2113, an equipment is
obta
ined for m easuring
harmonics
produced
in
earphones. If
the
Spectrometer
a
nd
th
e
B.F .O. are
16
2113
2619
4152
Fig.
3.1.
Measuring arrangement for automatically measuring frequency
characteristics and harmonic distortion of
earphones.
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