Does power spectral density change with sampling rate?

1. How does sampling rate affect spectrum?
2. How does sample rate affect FFT?
3. What are the factors on which power spectral density of digital data depend?
4. How does sampling rate affect frequency?

How does sampling rate affect spectrum?

That is, the highest-frequency range in the spectrum has lower amplitude when higher sample rates are employed, and this artifact likely protrudes gradually into lower frequencies as sample rate further increases.

How does sample rate affect FFT?

Frequency resolution depends on how many seconds of the signal you are passing to the FFT. Sampling rate determines the bandwidth of the FFT, so with a higher sampling rate you can analyse higher frequencies.

What are the factors on which power spectral density of digital data depend?

Estimation of PSD by Welch's method depends on three parameters, 1) window length – win, 2) percentage of window overlap – noverlap and 3) number of FFT points – N.

How does sampling rate affect frequency?

Sampling rate determines the sound frequency range (corresponding to pitch) which can be represented in the digital waveform. The range of frequencies represented in a waveform is often called its bandwidth.