character: Dr. Johnson
topic: Introduction to Signal Processing and Its Applications
grade: 12
subject: Mathematics
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character: Mr. Smith
topic: Fundamentals of Fourier Transforms in Signal Processing
grade: 12
subject: Mathematics
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character: Ms. Clark
topic: Applications of Digital Signal Processing in Real Life
grade: 12
subject: Mathematics
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character: Professor Lee
topic: Understanding Waveforms and Signals in Engineering
grade: 12
subject: Mathematics
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