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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [WebAudio](./puppeteer.protocol.webaudio.md) &gt; [ContextRealtimeData](./puppeteer.protocol.webaudio.contextrealtimedata.md)

## Protocol.WebAudio.ContextRealtimeData interface

Fields in AudioContext that change in real-time.

<b>Signature:</b>

```typescript
export interface ContextRealtimeData 
```

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [callbackIntervalMean](./puppeteer.protocol.webaudio.contextrealtimedata.callbackintervalmean.md) | number | A running mean of callback interval. |
|  [callbackIntervalVariance](./puppeteer.protocol.webaudio.contextrealtimedata.callbackintervalvariance.md) | number | A running variance of callback interval. |
|  [currentTime](./puppeteer.protocol.webaudio.contextrealtimedata.currenttime.md) | number | The current context time in second in BaseAudioContext. |
|  [renderCapacity](./puppeteer.protocol.webaudio.contextrealtimedata.rendercapacity.md) | number | The time spent on rendering graph divided by render qunatum duration, and multiplied by 100. 100 means the audio renderer reached the full capacity and glitch may occur. |