Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
We don’t have a defined level. It will greatly depend on the microphone quality and the noise type. If it is vocal noise it my conflict with the recognition. Ambient noise such as machine will be easier to elude for the engine