Project No.EN 61012:1998
TitleThis standard specifies the electrical characteristics of a U-weighting filter mainly for use with sound level meters meeting the requirements of IEC 651 for the measurement of audible sound in the presence of ultrasound.
Registration number (WIID)49915
ScopeThis standard specifies the electrical characteristics of a U-weighting filter mainly for use with sound level meters meeting the requirements of IEC 651 for the measurement of audible sound in the presence of ultrasound.
StatusIzstrādē
ICS group17.140.50