Digital Signal Processing Course

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What is the primary focus of the course in terms of signal analysis?

Only time-domain analysis
Only frequency-domain analysis
Time-domain and frequency-domain analysis (correct)
Analysis of non-linear systems

What is the main difference between continuous-time and discrete-time signals?

The frequency of the signal
The type of system used (linear or non-linear)
The number of independent variables
The type of processing used (analog or digital) (correct)

What is the purpose of using transformations in signal analysis?

To analyze linear time-invariant systems (correct)
To perform spectral analysis
To design digital filters
To convert analog signals to digital signals

What type of filters can be designed using the knowledge gained from this course?

Both FIR and IIR filters (B) Signup and view all the answers

What is the outcome of being able to compare the advantages and disadvantages of analog and digital signal processing?

Ability to choose the best approach for a given application (B) Signup and view all the answers

What is one of the applications of signal processing covered in this course?

Image processing (B) Signup and view all the answers

What is a discrete-time signal often identified as?

A sequence of numbers (D) Signup and view all the answers

What is the daily closing stock market average an example of?

A discrete-time signal (D) Signup and view all the answers

What is the term for the time interval between samples in a discrete-time signal?

Sampling interval (C) Signup and view all the answers

How can a discrete-time signal be defined?

Either by specifying a rule or by explicitly listing the values (A) Signup and view all the answers

What is the notation for a discrete-time signal where the sampling intervals are equal?

x(nTs) (D) Signup and view all the answers

What is the term for the values of a discrete-time signal obtained by sampling a continuous-time signal?

Samples (C) Signup and view all the answers

What is a major concern regarding gearboxes in industrial and vehicle applications?

The wear and tear of gear teeth over time (C) Signup and view all the answers

What is the primary goal of detecting and monitoring defective gear teeth?

To enhance the reliability of the entire machine (C) Signup and view all the answers

What is the technique used in digital image enhancement to increase image contrast?

Histogram equalization (A) Signup and view all the answers

What is the nature of the digital information used in digital image enhancement?

Pixels (B) Signup and view all the answers

What is the relationship between frequency and period?

They are inversely proportional to each other (A) Signup and view all the answers

What does a high frequency indicate?

A change in a short span of time (C) Signup and view all the answers

In what dimension does digital image enhancement operate?

Two dimensions (B) Signup and view all the answers

What is the purpose of vibration signature analysis for defective gear teeth?

To detect and monitor defective gear teeth (D) Signup and view all the answers

What is the phase of a waveform that is offset 1/6 cycle with respect to time 0?

30° or π/6 radians (B) Signup and view all the answers

What does the time-domain plot of a sine wave represent?

A continuous waveform with respect to time (A) Signup and view all the answers

What is the frequency of the power used at home, according to the example?

60 Hz (C) Signup and view all the answers

How are three sine waves with the same amplitude and frequency, but different phases, represented?

As three identical waveforms with different phases (C) Signup and view all the answers

What convention is used when no arrow is indicated in a sequence?

The first term corresponds to n = 0 and all the values of the sequence are zero for n < 0 (C) Signup and view all the answers

What is the unit step function u(t) also known as?

The Heaviside unit function (A) Signup and view all the answers

What is the value of the unit step function u(t) at t = 0?

Undefined (C) Signup and view all the answers

What is the unit impulse function also known as?

The Dirac delta function (B) Signup and view all the answers

What is the purpose of the arrow in the sequence shown in Fig.1-l(b)?

To denote the n = 0 term (C) Signup and view all the answers

What is the difference between the unit step function u(t) and the shifted unit step function u(t - to)?

The shifted unit step function is shifted in time (C) Signup and view all the answers