Summary

Introduction to Signal Processing by Sophocles J. Orfanidis is an applications-oriented undergraduate textbook that introduces core concepts in digital signal processing with practical engineering examples. The book covers discrete-time signals and systems, digital filter design, FFT-based spectral analysis, and introductory adaptive filtering, showing how these tools are applied in audio, communications, and radar contexts.

Key Takeaways

• Understand the fundamentals of discrete-time signals and systems and how they underpin DSP algorithms.
• Design FIR and IIR filters using common techniques (windowing, frequency sampling) and evaluate their frequency responses.
• Analyze signals with the FFT and spectral-analysis methods, including STFT and power spectral density estimation.
• Implement basic adaptive filters (LMS, Wiener) for applications such as noise cancellation and echo suppression.

Who Should Read This

Undergraduate electrical engineering students, practicing engineers, and graduate students who want an applications-focused introduction to DSP, filter design, spectral analysis, and adaptive filtering.

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