Before diving into Waves H-Reverb, let's quickly cover the basics of reverb. Reverb is a type of audio effect that simulates the way sound interacts with a physical space. When a sound is made, it bounces off surfaces, creating a series of echoes that decay over time. This phenomenon is known as reverberation, or reverb for short. Reverb can add a sense of distance, size, and ambiance to a sound, making it feel more realistic and immersive.