Digital Signal Processing Terms Questions & Answers

Digital Signal Processing Terms Questions & Answers adder - CORRECT ANSWER - -Performs addition of two signal sequences to form another sequence. -this operation is memoryless. amplitude scaling - CORRECT ANSWER - ____ of a signal by a constant A is accomplished by multiplying each sample of the signal by A antisymmetric - CORRECT ANSWER - x(n) is ____ (odd) if x(-n) = -x(n) aperiodic - CORRECT ANSWER - A signal that does not repeats its pattern over a period autocorrelation - CORRECT ANSWER - the correlation of two similar DT signals causal - CORRECT ANSWER - If the output depends on present and past inputs and does not depend on future inputs. constant multiplier - CORRECT ANSWER - -Applies a scale factor on the input x(n) -This operation is memoryless. continuous-time signal - CORRECT ANSWER - takes a value at every instant of time t. continuous-valued signal - CORRECT ANSWER - Signal takes on all possible values on a finite or an infinite range. correlation - CORRECT ANSWER - the process of determining the degree to which the two signals is similar crosscorrelation - CORRECT ANSWER - the correlation of two different DT signals deterministic signal - CORRECT ANSWER - Signal that can be uniquely described by an explicit mathematical expression. direct form 1 structure - CORRECT ANSWER - separate groups of delay elements are used both for the input and output signal samples direct form 2 structure - CORRECT ANSWER - an improved realization of DT-LTI systems where only one group of delay elements is used