Howtosignalprocessing
- What happens if you sample below the Nyquist frequency?
- What will happen when sampling rate is greater than Nyquist rate?
- What happens if analog signal is sampled at less than Nyquist rate?
- What is sub Nyquist sampling?
What happens if you sample below the Nyquist frequency?
When the sampling frequency drops below the Nyquist rate, the frequencies will crossover and cause aliasing.
What will happen when sampling rate is greater than Nyquist rate?
It is the critical rate of sampling. If the signal xt is sampled above the Nyquist rate, the original signal can be recovered, and if it is sampled below the Nyquist rate, the signal cannot be recovered.
What happens if analog signal is sampled at less than Nyquist rate?
Digital electronics can only work in discrete numbers. To convert an analog wave to a digital signal, it must be measured at a regular frequency, which is the sample rate. If the sample rate is too low, it will not accurately express the original signal and will be distorted, or show aliasing effects, when reproduced.
What is sub Nyquist sampling?
Sub-Nyquist. sampling, also known as compressive sampling or compressed. sensing, refers to the problem of recovering signals by samples. much fewer than suggested by Nyquist rate.
