1) lower frequencies in analog domain expanded in digital domain

2) lower frequencies in digital domain expanded in analog domain

3) non linear mapping

4) compression of higher frequencies

- The magnitude response of Butterworth fi...
- In the cascaded form of realisation, the...
- Parallel form of realisation is done in
- A direct partial-fraction expansion of t...
- Basically, group delay is the delayed re...
- A filter is said to be linear phase filt...
- Which among the following has/have a pro...
- Which is/are the correct way/s for the r...
- In direct form realization for an interp...
- To change the sampling rate for better e...
- Which address/es is/are generated by Pro...
- In DAGs, which register/s provide/s incr...
- Two vectors a, b are orthogonal if
- One dimensional signal is a function of
- Superposition of signals in a linear sys...
- DFT is applied to
- The filtering is performed using DFT usi...
- Discrete cosine transforms (DCTs) expres...
- A system is said to be unstable if
- A system is said to be marginally unstab...