![]() ![]() Or rms), also known as the quadratic mean, is a statistical In mathematics, the root mean square (abbreviated RMS The conversion from voltage V (volt) to level (dBu) is L = 20 × log ( V /0.775).Īll field quantities, like voltage or sound pressure areĪlways true RMS values, if not otherwise stated. The conversion from level L (dBu) to voltage (volt) is V = 0.775 × 10 ( L /20). The level difference between dBu level and dBV level is Δ L = 2.2 dB.Ġ dBV equals 2.2 dBu or 0 dBu equals −2.2 dBV. The level difference between +4 dBu studio levelĪnd −10 dBV consumer level is Δ L = 11.78 dB (12 dB). Scale: Level in dBu and dBV in comparison to the voltage in V Studio gear with a +4 dBu level is always balanced. In USA it is +24 dBu.ĭomestic gear with a −10 dBV level is usually unbalanced. The maximum undistorted level of audio amplifiers is +18 dBu. ![]() The studio recording level (pro audio) of +4 dBu means a voltage of 1.228 volts. The home recording level (consumer audio) of −10 dBV means 0.3162 volts, that is −7.78 dBu. What is dBV? A logarithmic voltage ratio with a reference voltage of V 0 = 1.0000 volt ≡ 0 dBV What is dBu? A logarithmic voltage ratio with a reference voltage of V 0 = 0.7746 volt ≡ 0 dBu The "u" in dBu implies that the load impedance is unspecified, unterminated, and is likely to be high. The origin of the index of dBu comes from "u = unloaded" and dBV comes from "V = 1 volt". Scroll down to find the formulas for voltage and power and the calculation of the absolute level. The reference voltage for 0 dBu is 0.775 volt (0.77459667 V) and for 0 dBV it is exactly 1.0 volt. You will see the program but the function will not work.Ĭalculator used with kind permission of įill out a gray box above and click the respective 'calculate' bar under it. The used browser does not support JavaScript. Volts (rms) to level in dBu and dBV p-p = peak to peakĬonversion of factor, ratio, or gain to a level value (gain decibels dB) Level in dBu to dBV, or volts ( rms ), and dBV to dBu, or volts (rms) Voltage level L u to L V and Voltage V − Voltage level L V to L u and Voltage V Voltage V to Voltage level L u (dBu) and L V (dBV) ![]()
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