What is a comb filter used for, and what did it replace?
A comb filter is used to separate luminance (Y) and chrominance (C) components of a composite video signal. It replaced low-pass/bandpass filters. 3. In real-world digital signal processing, what type of representation is normally used for negative (and positive) numbers? In real-world digital signal processing, numbers are normally represented using two’s complement. 4. In digital video processing, virtually all filters are of what type? In digital video processing, virtually all filters are of the Finite Impulse Response (FIR) type. 5. What is the standard measure of circuit complexity in digital signal processing? The standard measure of circuit complexity in digital signal processing is gate count. 6. Name three ways to reduce the number of bits of a signal. The most common ways to reduce the number of bits of a signal are truncation, symmetric rounding and limiting. Truncation and symmetric rounding are used to eliminate one or more least significant bits (LSBs), while limiting is
