AudioContextLatencyCategory

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AudioContextLatencyCategory type is an enumerated set of strings which are used to select one of a number of default values for acceptable maximum latency of an audio context. By using these strings rather than a numeric value when specifying a latency to a AudioContext , you can allow the 用户代理 to select an appropriate latency for your use case that makes sense on the device on which your content is being used.

AudioContextLatencyCategory can be used when constructing a new AudioContext by passing one of these values as the latencyHint option in the AudioContext() constructor's options dictionary.

值

值	描述
`"balanced"`	The user agent should balance audio output latency and power consumption when selecting a latency value.
`"interactive"`	The audio is involved in interactive elements, such as responding to user actions or needing to coincide with visual cues such as a video or game action. The user agent should select the lowest possible latency that doesn't cause glitches in the audio. This is likely to require increased power consumption. This is the default value.
`"playback"`	The user agent should select a latency that will maximize playback time by minimizing power consumption at the expense of latency. Useful for non-interactive playback, such as playing music.

规范

规范	状态	注释
Web 音频 API The definition of 'AudioContextLatencyCategory' in that specification.	工作草案	初始定义。

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Showing compatibility for latencyHint .

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`latencyHint`	Chrome 60	Edge ≤79	Firefox 61	IE No	Opera ?	Safari ?	WebView Android 60	Chrome Android 60	Firefox Android 61	Opera Android ?	Safari iOS ?	Samsung Internet Android 8.0

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最后修改： Mar 18, 2019

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