There are digital filtering schemes that use the process conceptually shown in F
ID: 2293309 • Letter: T
Question
There are digital filtering schemes that use the process conceptually shown in Figure (a) below, where the filter may be comprised of two parallel paths. x(n) y(n) X(n)+2x(n-2 Time-synchronization delay line DelayDelayDelay x(n) y(n) wn)x(n)+2x(n-2)+x(n-4) w(n) The actual implementation, however, will typically need a delay line as shown in Figure (b). The delay-line in the upper path is needed to compensate for the delay of the FIR filter in the bottom path. How many unit-delay elements do you have to insert in the upper path for its delay to match that of the lower path?Explanation / Answer
According to my knowledge, 2K delay elements have to insert in one of the paths for matching its delay to other paths, So, 22= 4 unit-delay elements have to insert in the upper path for its delay to match that of the lower path.
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