In telecommunication, reference noise is the magnitude of circuit noise chosen as a reference for measurement.
Many different levels with a number of different weightings are in current use, and care must be taken to ensure that the proper parameters are stated.
Specific ones include: dBa, dBa(F1A), dBa(HA1), dBa0, dBm, dBm(psoph), dBm0, dBrn, dBrnC, dBrnC0, dBrn(f1-f2), dBrn(144-line), dBx.
Famous quotes containing the words reference and/or noise:
“Ultimately Warhol’s private moral reference was to the supreme kitsch of the Catholic church.”
—Allen Ginsberg (b. 1926)
“Soon, with a noise like tambourines,
Came her attendant Byzantines.”
—Wallace Stevens (1879–1955)