Resampling vs upsampling

1. Is resampling the same as upsampling?
2. What is the difference between upsampling and oversampling?
3. What is difference between upsampling & interpolation?
4. Does upsampling improve sound quality?

Is resampling the same as upsampling?

Resampling involves changing the frequency of your time series observations. Two types of resampling are: Upsampling: Where you increase the frequency of the samples, such as from minutes to seconds. Downsampling: Where you decrease the frequency of the samples, such as from days to months.

What is the difference between upsampling and oversampling?

Basics of Sampling - Oversampling and Upsampling

When practically implemented though, oversampling refers to using a higher sampling rate than needed to run the A/D or D/A converter thus increasing the rate of the signal. Upsampling is on the other hand a rate conversion from one rate to another arbitrary rate.

What is difference between upsampling & interpolation?

Upsampling adds to the original signal undesired spectral images which are centered on multiples of the original sampling rate. “Interpolation”, in the DSP sense, is the process of upsampling followed by filtering. (The filtering removes the undesired spectral images.)

Does upsampling improve sound quality?

When we upsample a 44.1kHz 16-bit file to a higher rate and depth, like 96kHz 24 bits, we typically get better sound quality.