[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [WebAudio](./puppeteer.protocol.webaudio.md) > [GraphObjectId](./puppeteer.protocol.webaudio.graphobjectid.md) ## Protocol.WebAudio.GraphObjectId type An unique ID for a graph object (AudioContext, AudioNode, AudioParam) in Web Audio API Signature: ```typescript export type GraphObjectId = string; ```