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

A) A signal that changes smoothly over time
B) A signal defined at discrete time points
C) A continuous signal with infinite values
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 convert analog signals to digital signals
B) To amplify the signal power
C) To efficiently compute the frequency components of a signal
D) To store signals in a database

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

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

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

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