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akustisches Signal
gen.	alarm message; audible indicator; audible signal
commun.	sound signal
comp.	acoustic signal; audiosignal
med.appl.	auditory signal
microel.	audio signal
nat.res.	acoustic signal (warning device)
transp.	audible warning device
transp., avia.	aural signal
akustische Signal
biol.	sound signal
akustische Signale
gen.	sound signals

akustisches Signal: 4 phrases in 3 subjects

General	1
Medical appliances	1
Physics	2