Non-Speech Audio

Auditory output that conveys information through sounds other than spoken words — for example tones, clicks, earcons, auditory icons, musical motifs, or vowel-like timbres. Non-speech audio is widely used in accessibility because it can be faster and less cognitively demanding than synthesised speech, does not interfere with concurrent speech output from a screen reader or conversation, and can be presented continuously to track a changing value. Common uses include progress indicators, proximity cues in blind-navigation apps, error signals, and sonification of charts, paths, or directions.