Go to Google Books or Amazon India, search "Digital Signal Processing Tarun Kumar Rawat", and click "Buy E-book" (approx. ₹350-500). Then, download the free MATLAB or Octave software to practice the examples.
This response is structured for students, engineers, and academics looking for a legitimate, high-quality resource on DSP. Full Title: Digital Signal Processing Author: Tarun Kumar Rawat (Generally associated with Oxford University Press, India) Target Audience: Undergraduate (B.Tech/B.E.) and Postgraduate (M.Tech) students in Electronics & Communication Engineering (ECE), Electrical Engineering (EE), and Computer Science (CS). Tarun Kumar Rawat Digital Signal Processing Download
Recommended for undergraduate exam preparation in the Indian education system. For self-learning, industry work, or research, supplement it heavily with a more intuitive text (like Smith or Lyons). Do not pirate it; buy a used copy or the cheap e-book. Go to Google Books or Amazon India, search