PCM Audio Explained: How Sound Becomes Numbers (opens in new tab)

Whenever you listen to a WAV file, record audio through a microphone, or process speech data for machine learning, you are likely working with PCM audio. But what exactly is PCM, and why is it so important? What Is PCM? PCM stands for Pulse Code Modulation. It is one of the most widely used methods for representing audio in digital form. Instead of storing sound as a continuous wave, PCM stores a sequence of numerical values. Each value represents the amplitude of the sound wave at a specific...