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English
Finnish
fundamental reference system of
the
CCITT
CCITT-vertailujärjestelmä
primary system for
the
determination of reference equivalents
primaarikäyttönormaali
reference apparatus for
the
determination of transmission performance ratings
ARAEN-vertailulaite
reference speech power for
the
measurement of AEN
ARAEN-normaalitaso
reference speech power for
the
NOSFER
NOSFER-normaalitaso
reference system for
the
determination of AEN
SRAEN-vertailujärjestelmä
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