psophometricadj.
/ˌsɒfəˈmɛtrɪk/, U.S. /ˌsɑfoʊˈmɛtrɪk/, /ˌsɑfəˈmɛtrɪk/ Of or relating to a psophometer; spec. designating a single voltage which would produce the same effect in a communication circuit as the combined voltages of the noise signals.
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society > communication > telecommunication > telegraphy or telephony > telephony > [adjective] > voltage
psophometric1943
1943 Gloss. Terms Telecommunications (B.S.I.) 15 Psophometric voltage, the voltage at 800 c/s between two points in a telephone system which, if it replaced the disturbing voltage, would produce the same degree of interference with a telephone conversation as the disturbing voltage.
1975 J. E. Flood Telecommunication Networks ii. 48 For white noise in the band 0–4 kHz, the effect of psophometric weighting is to reduce the noise level by 3·6 dB.
1995 IEE Proc. Electr. Power Applic. 142 23/1 The converter topology is..found to have improved figures for..psophometric current, which is an important indicator in the rail traction field.
1999 W. Ahnert & F. Steffen Sound Reinforcement Engin. iv. 112 Because of the different weighting curves used in determining the psophometric voltage and the equivalent loudness, the numerical values of..the same measuring object may show differences of up to 12 dB.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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adj.1943