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

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

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

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

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

A) Exponential growth
B) Trigonometry
C) Convolution
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 calculates the signal-to-noise ratio of a signal
D) It determines the color of digital signal displays

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

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