Delta Modulation and Adaptive Delta Modulation: Simplifying Digital Voice Communication
In the world of digital communication, Pulse Code Modulation (PCM) paved the way for digitizing analog signals. However, PCM isn't always efficient in terms of bandwidth and data rate. To address these limitations, two intelligent techniques were developed: Delta Modulation (DM) and its improved version, Adaptive Delta Modulation (ADM) . In this blog, we’ll take a deep dive into how Delta Modulation works, its advantages and limitations, and how Adaptive Delta Modulation overcomes those challenges. So, let’s decode this modulation magic! 🔁 Recap: What Came Before — PCM Before we explore DM and ADM, it’s essential to remember what PCM (ref: Pulse Code Modulation (PCM): The Digital Backbone of Modern Communication ) does: Samples the analog signal at regular intervals (Nyquist Rate). Quantizes the samples into discrete values. Encodes these values into binary for transmission. While PCM is powerful, it requires a high bit rate and complex quantization , makin...