Web/API/AudioContextOptions/sampleRate

The AudioContextOptions dictionary (used when instantiating an AudioContext) may contain a property named sampleRate, which indicates the sample rate to use for the new context. The value must be a floating-point value indicating the sample rate, in samples per second, for which to configure the new context; additionally, the value must be one which is supported by AudioBuffer.sampleRate.

Syntax

audioContextOptions.sampleRate = 44100;

var sampleRate = audioContextOptions.sampleRate;

Value

The desired sample rate for the AudioContext, specified in samples per second. The value must be compatible with AudioBuffer.sampleRate. This value should typically be between 8,000 Hz and 96,000 Hz; the default will vary depending on the output device, but the sample rate 44,100 Hz is the most common.

If the sampleRate property is not included in the options, or the options are not specified when creating the audio context, the new context's output device's preferred sample rate is used by default.

Specifications

Specification	Status	Comment
Web Audio APIThe definition of 'AudioContextOptions.sampleRate' in that specification.	Working Draft	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`sampleRate`	Chrome Full support 74	Edge Full support 79	Firefox Full support 61	IE No support No	Opera No support No	Safari ?	WebView Android Full support 74	Chrome Android Full support 74	Firefox Android Full support 61	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support 11.0

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown