How Do I Measure the Time Duration of a Finite Length Discrete Sequence?

1. What is finite duration sequence?
2. What does finite duration mean?
3. What is DFT length?

What is finite duration sequence?

A finite-duration sequence is a sequence that is nonzero in a finite interval n1≤n≤n2. As long as each value of x[n] is finite then the sequence will be absolutely summable. When n2>0 there will be a z−1 term and thus the ROC will not include z=0.

What does finite duration mean?

adj. 1 bounded in magnitude or spatial or temporal extent.

What is DFT length?

FTD, DFT of length N=M=16 N = M = 16 . FTD and DFT result of finite duration signal of M=16 samples. Increasing the signal length x[n] with zeros, which is called zero padding , does not influence the resulting FTD equation. The zero padded signal and its FTD are shown in Fig.