Artificial Voice Type 4215
This
instrument is an
acoustically
well-defined
sound
source, which may be used for free-field
measurements as
wel
l
as for measurements under
constant sound
pressure
conditions.
BHUEL&KJ&R
Nif!rum,
Denmark
•
Phone 80
05 00
Telegrams: BRUKJA, Copenhagen
BB
421!5
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