[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [WebAudio](./puppeteer.protocol.webaudio.md) > [ContextRealtimeData](./puppeteer.protocol.webaudio.contextrealtimedata.md) > [callbackIntervalVariance](./puppeteer.protocol.webaudio.contextrealtimedata.callbackintervalvariance.md) ## Protocol.WebAudio.ContextRealtimeData.callbackIntervalVariance property A running variance of callback interval. Signature: ```typescript callbackIntervalVariance: number; ```