Currently AudioNode.disconnect() disconnects all existing connections from output(s) of the AudioNode. This is to support disconnecting only one connection. There have been numerous requests to support selective disconnection with disconnect() method and Audio WG agreed to change the spec to accommodate the feature request. With this change, it is possible to disconnect a signal path out of multiple connections to AudioNode input or AudioParam.
Docs: https://developer.mozilla.org/en-US/docs/Web/API/AudioNode/disconnect
Samples: https://github.com/GoogleChrome/samples/tree/gh-pages/webaudio-audionode-disconnect