Data sonification

The representation of data values through non-speech audio, typically by mapping numerical values to auditory parameters such as pitch, volume, duration, or timbre. Data sonification makes charts and graphs accessible to blind and low-vision users by allowing them to perceive trends, patterns, and outliers through sound. For example, a rising pitch may represent increasing values in a line chart, while different instruments can distinguish multiple data series. Sonification complements text descriptions by conveying the shape and flow of data rather than just discrete values.