Dynamic Range defines the usable span of volume within an audio system or recording medium, measured in decibels (dB). It essentially quantifies the distance between the noise floor—the quietest level where the signal becomes indistinguishable from background hiss or hum—and the clipping point (or saturation point), which is the maximum level the system can handle before introducing audible distortion.

A system with a wide dynamic range offers greater fidelity, as it can faithfully reproduce both the quietest nuances of a performance and the loudest transients without compromise. The reference to AES17 is significant because it establishes a strict industry standard for measuring dynamic range in digital audio devices. This prevents manufacturers from using misleading measurement techniques, requiring specific filters and methods to ensure the specification reflects real-world performance.