Sonification

The use of non-speech audio to represent information, data, or environmental characteristics. In accessibility, sonification provides an alternative or complement to visual displays, encoding spatial, quantitative, or categorical information as sound properties such as pitch, volume, timbre, rhythm, or spatial position. Examples include auditory graphs where data values map to pitch, ambient environmental sounds in virtual spaces that convey room size and geometry, and navigation aids that use changing tones to indicate direction or proximity. Sonification differs from speech-based audio (such as screen readers) in that it uses non-verbal sound to convey information, often enabling faster pattern recognition and more intuitive spatial understanding. Effective sonification requires careful sound design to avoid listener fatigue and cognitive overload, and works best as part of a holistic audio environment rather than as an isolated feedback mechanism.