Is there a version of Welch's method that doesn't look for power?

1. What are the different methods available to estimate power spectral density?
2. What are the main advantages of using the Welch method instead of the traditional periodogram?
3. Why is Welch method better?
4. What's the difference between periodogram and spectrogram?

What are the different methods available to estimate power spectral density?

The process of transforming from the time to the frequency domain is known as spectral estimation. Two methods are commonly used, the Fast Fourier Transform (FFT) and the Maximum Entropy Method (MEM).

What are the main advantages of using the Welch method instead of the traditional periodogram?

Welch's method is an improvement on the standard periodogram spectrum estimating method and on Bartlett's method, in that it reduces noise in the estimated power spectra in exchange for reducing the frequency resolution.

Why is Welch method better?

8.3.

One reason Welch's method improves upon Student's T is that under random sampling, Welch's method satisfies the basic requirement of converging to the correct answer as the sample sizes get large when randomly sampling from nonnormal distributions, even when the sample sizes are unequal.

What's the difference between periodogram and spectrogram?

For a Periodogram , returns the computed power at each frequency as a Vector. For a Spectrogram , returns the computed power at each frequency and time bin as a Matrix. Dimensions are frequency × time.