Definitions And Abbreviations Of Terms - Apex Digital Argos User Manual

Definitions and abbreviations of terms.

dB
Logarithmic ratio of voltages, currents or powers.
dBm
dBu
dBV
dBA
SPL
Logarithmic ratio of the RMS value of the "A"-weighted sound pressure expressed in Pa and
the lowest sound pressure a human ear can detect, being 20 µPa.
1 dBA = 20 * log (P/P
SPL
Sound Pressure Level expressed in dB.
RMS
Root Mean Square.
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Logarithmic ratio of voltages with reference : 1 mW into 600 Ohm.
Logarithmic ratio of voltates with reference : 774,6 mV.
Logarithmic ratio of voltages with reference : 1 V.
) with P
Ref Ref
ARGOS - USER MANUAL
= 20 µPa.
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