# Random Signal and Noise Calculation English Español

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.

Code to add this calci to your website  #### 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.