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Acoustics - Measurements on silencers in situ (ISO 11820:1996)
90.93 Standard confirmed
Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997)
90.93 Standard confirmed
Underwater acoustics — Standard-target method of calibrating active sonars for imaging and measuring scattering
30.99 CD approved for registration as DIS
Household high-fidelity audio equipment and systems - Methods of measuring and specifying the performance - Part 6: Listening tests on loudspeakers - Single stimulus ratings and paired comparisons
60.60 Standard published