BRUEL & KJAER 2706 - Acoustics Applications

5.2.2. Vibration testing
Fig.5.2 shows
an example of set-up for vibration testing using the
Vibration Exciter Type
4809. Filtering of both compression and measured
signals allows response measurements at very low levels or in the presence of
high ambient noise.
r-
1
I
I
.-. ·4 ·;
: Heterodyne Analyzer
2010
Heterodyne Slave Filter 2020 Level Recorder 2305 I
L----------------------~~~~~~--------------------m~
Fig.5.2. Example of Vibration Testing set-up
5.3. USE WITH THE REVERBERATION PROCESSOR TYPE 4422
16
Loudspeaker
Power
Amplifier
2706
Enclosure
Band Pass Filter Set
1615
Microphone
Audio Frequency Spectrometer
2113
Level Recorder 2305
---1
I
I
I
I
I
I
I
I
I
I
I
...a...JLJ-~·
. r-.
~
I
I
L ______ L ________ ~~~~~~~~J
171420
Fig.5.3. Measurement of Reverberation Time by the Kuttruff Method