LEADER 01512nam  2200349   450 
001 9910135266403321
005 20231208083633.0
010   $a0-7381-0563-5
024 7 $a10.1109/IEEESTD.1979.81714
035   $a(CKB)3780000000092172
035   $a(NjHacI)993780000000092172
035   $a(EXLCZ)993780000000092172
100   $a20231208d1979      uy             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aANSI/IEEE Std 661-1979 $eIEEE standard method for determining objective loudness ratings of telephone connections /$fInstitute of Electrical and Electronics Engineers
210  1$aPiscataway, New Jersey :$cIEEE,$d1979.
215   $a1 online resource (20 pages)
330   $aTo describe a practical and reproducible method of determining the loudness ratings of telephone connections. Loudness ratings may be measured directly using appropriate test instruments and facilities, as specified in this standard, or may be computed using the amplitude-frequency characteristic of the connection measured in accordance with IEEE Std 269-1971.
517   $aANSI/IEEE Std 661-1979: IEEE Standard Method for Determining Objective Loudness Ratings of Telephone Connections
606   $aTelephone systems
615  0$aTelephone systems.
676   $a651.73
801  0$bNjHacI
801  1$bNjHacl
906   $aDOCUMENT
912   $a9910135266403321
996   $aANSI$92072434
997   $aUNINA