Which of the following best describes 'Digital Audio Scrub'?

Digital Audio Scrub is a feature that allows users to scrub through audio in real time while listening to it. This means that as you move the playback indicator across the audio waveform, you can hear the audio at various segments without interrupting the scrubbing motion. It aids in precision editing by enabling you to identify specific parts of the audio, making it easier to locate the desired edit points.

This capability is fundamentally important in digital editing workflows, allowing editors to synchronize audio with video or to find the right sections of a sound bite quickly. While the other options present different audio-related functions, they do not accurately capture the essence of what scrubbing encompasses. Playing audio at half speed, creating a new audio file, and adjusting pitch all pertain to other aspects of audio manipulation but do not define the interactive nature of 'scrubbing' as it is understood in digital audio environments.