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

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

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

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

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

A) It predicts the lifetime of digital signal processors
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 calculates the signal-to-noise ratio of a signal

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

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