Why resampling change this FFT output?

1. What does resampling signal do?
2. What is resampling factor?
3. What is resampling in interpolation?
4. What is resampling in DSP?

What does resampling signal do?

Resampling is the process of changing the sampling rate of an existing signal. A new signal should keep all information contained in the original signal. A resampling dialog in SIGVIEW lets you choose a new sampling rate for the signal and shows you a resampling factor (a ratio between the new and old sampling rates).

What is resampling factor?

4.1.3 What is the “resampling factor”? The interpolation factor is simply the ratio of the output rate to the input rate. Given that the interpolation factor is L and the decimation factor is M, the resampling factor is L / M. In the above example, the resampling factor is 147 / 160 = 0.91875.

What is resampling in interpolation?

Resampling is used to either increase the sample rate (make the image larger) or decrease it (make the image smaller). Interpolation is the process of calculating values between sample points. So, if you resample an image you can use interpolation to do it.

What is resampling in DSP?

resample Function

One resampling application is the conversion of digitized audio signals from one sample rate to another, such as from 48 kHz (the digital audio tape standard) to 44.1 kHz (the compact disc standard).