Random Signal and Noise Calculation
English

Random signals are random variables which evolve, often with time (e.g. audio noise), but also with distance (e.g. intensity in an image of a random texture), or sometimes another parameter.This calculator is used to calculate RMS noise voltage.

Noise Calculator

(microvolts)
(dBu)
(dBV)

Random signals are random variables which evolve, often with time (e.g. audio noise), but also with distance (e.g. intensity in an image of a random texture), or sometimes another parameter.This calculator is used to calculate RMS noise voltage.

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Formula for the RMS noise voltage:

Vn =sqrt( 4 * kB * T *If *R ) where, Lu in dBu has the reference voltage V0 = 0.7746 and LV in dBV has the reference voltage V0 = 1 V Boltzmann constant kB = 1.3806505*10-23 J/K (joule/kelvin); J=W·s Absolute temperature in kelvin T = 273.15 Bandwidth being considered .If = f2 - f1 = fmax - fmin in Hz; 20 kHz - 20 Hz = 19980 Hz Resistance of the circuit element R. R does not mean the universal gas constant!

This calculator calculates the RMS Noise voltage and Noise Level.


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