AudioProcessingEvent: playbackTime property
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
The playbackTime
read-only property of the AudioProcessingEvent
interface represents the time when the audio will be played. It is in the same coordinate system as the time used by the AudioContext
.
Value
A number that doesn't need to be an integer.
Examples
const audioContext = new AudioContext();
const processor = audioContext.createScriptProcessor(256, 2, 2);
processor.addEventListener("audioprocess", (event) => {
const inputBuffer = event.inputBuffer;
const outputBuffer = event.outputBuffer;
for (let channel = 0; channel < outputBuffer.numberOfChannels; channel++) {
const inputData = inputBuffer.getChannelData(channel);
const outputData = outputBuffer.getChannelData(channel);
// Log the corresponding time for this audio buffer
console.log(`Received audio data to be played at ${event.playbackTime}`);
// Process the audio data here
for (let i = 0; i < outputBuffer.length; i++) {
outputData[i] = inputData[i] * 0.5;
}
}
});
processor.connect(audioContext.destination);
Specifications
Specification |
---|
Web Audio API # dom-audioprocessingevent-playbacktime |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
playbackTime |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Deprecated. Not for use in new websites.