We research and voice testing to improve the inclusivity, accessibility and performance of Google’s current and future products, services, and machine learning. For instance, Developing, improving, testing, and evaluating current and future Google products and services, including technologies for speech detection, speech recognition, distinguishing between multiple speakers, text to speech, speaker recognition, speech and voice synthesis, speech prosody, emotion or sentiment recognition or classification, speech enhancement, pronunciation, visual speech detection, lip reading, language detection, or other classifications based on analysis of recordings.