| http://www.w3.org/ns/prov#value | - Electronic components such as 62 could include filters, amplifiers, etc. for pre-processing or processing the low amplitude electric signal from the piezoelectric membrane 4, prior to transmission thereof through the cable such as 72 in FIGS. 5 and 6 where it is susceptible of being greatly affected by interferences such as EMI interferences.
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