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

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

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

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

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

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

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

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

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