If add white noise to the signal, how much does the std of the noise affect the thd of the signal?

1. What is the standard deviation of white noise?
2. What is white noise and how does it affect a signal?
3. What is SNR signal-to-noise ratio?
4. What is SNR vs THD?

What is the standard deviation of white noise?

true white noise has infinite power (because the power spectrum with height η2 has infinite area) which means infinite variance σ2 which means infinite standard deviation. white noise is a conceptual instrument.

What is white noise and how does it affect a signal?

White noise is a complex signal or sound that covers the entire range of audible frequencies, all of which possess equal intensity. White noise is analogous to white light, which contains roughly equal intensities of all frequencies of visible light.

What is SNR signal-to-noise ratio?

The signal-to-noise ratio (SNR), defined as the amplitude squared of a signal or the signal variance divided by the variance of the system noise, is a widely applied measure for quantifying system fidelity and for comparing performance among different systems (1–4).

What is SNR vs THD?

THD stands for Total Harmonic Distortion, SINAD stands for Signal to Noise and Distortion Ratio and SNR stands for Signal to Noise Ratio. These parameters are used to quantify dynamic performance of ADC (Analog to Digital Converter). These are used to quantify distortion and noise of A/D converters.