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If the goal is to learn concepts for lifestyle/entertainment devices, consider freely available resources like: Disclaimer: Always respect copyright laws
Dr. Sanjay Sharma Communication Systems (Analog and Digital) If the goal is to learn concepts for
: Detailed exploration of Frequency Modulation (FM) and Phase Modulation (PM). Noise Analysis When you choose between a vinyl record player
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When you choose between a vinyl record player and a Sonos soundbar, you are choosing between the analog (continuous wave) and digital (sampled data) philosophies detailed in the communication systems analog and digital by Sanjay Sharma pdf .