ChromeOS Compatible - Bluetooth Speaker Specification v1.1

  • This document outlines the requirements for ChromeOS Compatible Bluetooth speakers.

  • Requirements are categorized by "MUST", "SHOULD", and "MAY".

  • Specific requirements are detailed for audio quality (mute functionality) and audio latency (output latency and A/V sync).

  • The document includes a revision history.

Version: 1.1
Last updated: 2024-09-05

Legend

Product Verb Development Action
"MUST" Mandatory product requirement
"SHOULD" Optional recommendation
"MAY" Nice to have

Overview

This document describes the requirements a ChromeOS Compatible Bluetooth speaker meets. This specification is not for WWCB products, nor for a product designed and certified together with a Chromebook.

General Bluetooth Requirements

Refer to ChromeOS Compatible - Bluetooth Specification.

Audio Quality

Capture Path - Mute

  • If there is any interface for users to mute the audio device, it must
    • Maintain the mute state in a way that is not affected by:
      • Opening and closing the device.
      • Switching to another input device.
  • If the user presses the mute button on the headset or ChromeOS, the mute state must change.
  • If the mute state changes, the mute state indicator (eg:LED) on the headset must change.

Audio Latency

Latency

  • Output Latency
    • Audio playback must begin ≤500 ms after a user action that initiates playback.
      • May request a waiver if the device OEM can prove that no echo is introduced when it fails this requirement.

A/V Sync

  • Audio playback should be synchronized with video playback. Audio playback may lead the video by ≤25 ms or trail the video by ≤95 ms.

Revision History

Date Version Notes
2024-09-05 1.1 ChromeOS Compatible spec derived. Initial Partner Site Publication.
2021-11-04 1.0 Related WWCB specification created.