A) To analyze and modify signals using digital systems
B) To store signals in physical media
C) To create music using traditional instruments
D) To process images using analog technology

A) A continuous signal with infinite values
B) A signal that changes smoothly over time
C) A signal defined at discrete time points
D) A signal that amplifies quickly

A) Finite Impulse Response (FIR) filter
B) Analog voltage regulator
C) Optical lens filter
D) Mechanical water filter

A) To efficiently compute the frequency components of a signal
B) To convert analog signals to digital signals
C) To amplify the signal power
D) To store signals in a database

A) Reducing the number of samples in a signal
B) Assigning discrete levels to continuous signal values
C) Doubling the amplitude of a signal
D) Creating random signal patterns

A) Exponential growth
B) Trigonometry
C) Square root
D) Convolution

A) It calculates the signal-to-noise ratio of a signal
B) It states that a signal should be sampled at twice its highest frequency
C) It determines the color of digital signal displays
D) It predicts the lifetime of digital signal processors

A) To analyze physical vibrations
B) To generate random noise signals
C) To perform mathematical operations on digital signals
D) To convert analog signals to digital signals

A) To create reverberation effects
B) To increase signal distortion
C) To amplify high-frequency noise
D) To reduce spectral leakage in Fourier analysis