Digital Signal Processing – Midterms Questions & Answers A sin (2 πft) - CORRECT ANSWER - Formula for analog signal (both sin and cos) Autocorrelation - CORRECT ANSWER - if the two signals are exactly the same Autocorrelation - CORRECT ANSWER - This is a type of correlation in which the given signal is correlated with itself, usually the time -shifted version of itself. basis - CORRECT ANSWER - All sinusoidal waves that can be combined together to produce any periodic waveform Convolution - CORRECT ANSWER - is very much like correlation, but includes the operation of flipping Correlation - CORRECT ANSWER - computes a measure of similarity of two input signals as they are shifted by one another. Correlation - CORRECT ANSWER - Is a relationship that exists between objects, phenomena or signals and occurs in such a way that it is not by chance alone Cross -correlation - CORRECT ANSWER - if the two signals are different Cross -correlation - CORRECT ANSWER - This is a kind of correlation, in which the signal in -
hand is correlated with another signal so as to know how much resemblance exists between them. Deterministic signals - CORRECT ANSWER - mathematically defined such that their values can be accurately determined at each instant of time Digital filtering - CORRECT ANSWER - Application of Convolution Extract signal from noise - CORRECT ANSWER - A common application of autocorrelation is to ____________ Flipping - CORRECT ANSWER - we mean the mirror image of a signal about n=0 axis. Fourier Transform - CORRECT ANSWER - is used to convert from the time domain to the frequency domain Fundamental frequency/first harmonic - CORRECT ANSWER - the lowest frequency Gibb's phenomenon - CORRECT ANSWER - discovered that the overshoots at the vertical edges never really go away, irrespective of how many harmonics are added Harmonics - CORRECT ANSWER - other frequencies that are integer multiples of the fundamental
hand is correlated with another signal so as to know how much resemblance exists between them. Deterministic signals - CORRECT ANSWER - mathematically defined such that their values can be accurately determined at each instant of time Digital filtering - CORRECT ANSWER - Application of Convolution Extract signal from noise - CORRECT ANSWER - A common application of autocorrelation is to ____________ Flipping - CORRECT ANSWER - we mean the mirror image of a signal about n=0 axis. Fourier Transform - CORRECT ANSWER - is used to convert from the time domain to the frequency domain Fundamental frequency/first harmonic - CORRECT ANSWER - the lowest frequency Gibb's phenomenon - CORRECT ANSWER - discovered that the overshoots at the vertical edges never really go away, irrespective of how many harmonics are added Harmonics - CORRECT ANSWER - other frequencies that are integer multiples of the fundamental
