---
title: Audio graphs
framework: accessibility
role: collectionGroup
role_heading: API Collection
path: accessibility/audio-graphs
---

# Audio graphs

Define an accessible representation of your chart for VoiceOver to generate an audio graph.

## Overview

Overview Charts and graphs help users quickly identify important features and trends in data. Use the audio graphs API to provide all the information that VoiceOver needs to construct an audible representation of the data in your charts and graphs, making the data accessible to people who are blind or have low vision.

An audio graph turns the data in your chart into an audible representation by encoding the data on each axis as audio. Typically, the audio graph represents the x-axis as time, and the y-axis as pitch. For example, an audible representation of a scatter plot that shows a linear downward trend might be a series of individual tones descending in pitch over time. An audible representation of a stock chart might be a single continuous tone with a pitch that modulates up or down with the stock price (y-axis) as the audio plays over time (x-axis). note: Session 10122: Bring accessibility to charts in your app

## Topics

### Essentials

- [Representing chart data as an audio graph](accessibility/representing-chart-data-as-an-audio-graph.md)

### Chart representation

- [AXChart](accessibility/axchart.md)
- [AXChartDescriptor](accessibility/axchartdescriptor.md)

### Axis representation

- [AXDataAxisDescriptor](accessibility/axdataaxisdescriptor.md)
- [AXCategoricalDataAxisDescriptor](accessibility/axcategoricaldataaxisdescriptor.md)
- [AXNumericDataAxisDescriptor](accessibility/axnumericdataaxisdescriptor.md)

### Data representation

- [AXDataPoint](accessibility/axdatapoint.md)
- [AXDataSeriesDescriptor](accessibility/axdataseriesdescriptor.md)

### Live audio graphs

- [AXLiveAudioGraph](accessibility/axliveaudiograph.md)

## See Also

### Features

- [Customized accessibility content](accessibility/customized-accessibility-content.md)
- [Hearing device support](accessibility/hearing-device-support.md)
- [AXNameFromColor(_:)](accessibility/axnamefromcolor(_:).md)