02202nam 2200397 450 99628067420331620231206214110.01-5044-0312-610.1109/IEEESTD.1972.7409897(CKB)3710000000595637(NjHacI)993710000000595637(EXLCZ)99371000000059563720231206d1972 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierIEEE Std 347-1972 (ANSI S4.6-1973) IEEE standard method of measuring recorded flux of magnetic sound records at medium wavelengths /Institute of Electrical and Electronics EngineersPiscataway, New Jersey :IEEE,1972.1 online resource (8 pages)The knowledge of the recorded signal amplitude on a magnetic record (which may be in the form of a tape, a disc, oτ a perforated film) has several practical uses: (1) for determining and standardizing references for the levels of audio programs on these magnetic records; (2) for specifying the recording-performance properties of magnetic media (for example, the distortion versus flux, etc); and (3) for measuring and specifying the sensitivity of reproducing heads (and also, by reciprocity, recording heads). The quantity for specifying the recorded signal is the short-circuit magnetic flux, sometimes simply shortened to flux. Several possible methods exist for measuring tape flux, but the measurement given here involves only the use of a calibrated ring-core head which is described in the reference of the standard. Note that the present standard measurement is only for "medium wavelengths".IEEE Std 347-1972 Magnetic recorders and recordingMagnetic tapesSoundRecording and reproducingMagnetic recorders and recording.Magnetic tapes.SoundRecording and reproducing.621.38932NjHacINjHaclDOCUMENT996280674203316IEEE Std 347-1972 (ANSI S4.6-1973)3646415UNISA