Demo page for exploring Web Speech API timestamps and latency.

See the explainer, Spec PR #192, Issue #191, and ChromeStatus for more information about the proposed SpeechRecognitionResult WebIDL attributes: speechStartTime and speechEndTime.

Run the latest demo HERE and use --enable-blink-features=WebSpeechTimestamps to test the new timestamp attributes in Chrome.

Also: Test the experimental dictation quality option with chrome://flags/#web-speech-on-device-small-expert-model.