Version: 2.0  

Last updated: 2026-09-28

## Overview

This specification module outlines the audio latency and audio-video (AV)
synchronization requirements for audio peripherals.


### Minimum and Additional Requirements

This specification document is divided into two sections:

1. **Minimum** requirements describe the criteria for a peripheral category to be compatible.
2. **Additional** requirements describe the criteria for certification.

Use these navigation buttons to show only the minimum or both the minimum
and additional specification, respectively.
<button value="min">Minimum</button> <button value="add" default="">Minimum and Additional</button>

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## Audio Latency

### MINIMUM REQUIREMENTS

- None

### ADDITIONAL REQUIREMENTS

Along with the **Minimum** requirements, a peripheral MUST meet the following
requirements to achieve certification:

#### Latency

- **\[Mandatory\] Output Latency**: Audio playback MUST begin ≤ 500 ms after a user action that initiates playback.

#### Audio-Video (AV) Sync

- **\[Mandatory\] Accuracy**: The audio playback latency report MUST be accurate to real world latency, i.e., ≤ 50 ms.

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## Revision history

| Date | Version | Notes |
|---|---|---|
| 2026-09-28 | 2.0 | Update for ChromeOS Compatible specification. |
| 2026-03-03 | 1.1.2 | Formatting update. |
| 2024-06-14 | 1.1.1 | Publish to partner site. |
| 2024-05-07 | 1.1 | Change wording by tech writer suggestion. |
| 2022-12-19 | 1.0 | Initial version. |

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