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

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

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

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

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

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

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

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

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