At least in video games, responsiveness is being measured mainly with high-speed cameras ;) - (60fps, e.g. 16ms is good enough sampling rate) http://www.gamasu

At least in video games, responsiveness is being measured mainly with high-speed cameras ;) - (60fps, e.g. 16ms is good enough sampling rate) http://www.gamasutra.com/view/feature/3725/measuring_responsiveness_in_video_.php?print=1 http://www.gamasutra.com/view/feature/3725/measuring_respons... This by far is most portable, testable and unbiased way of doing it. If you rely on internal measuring then, well.. Actually I don't know how you can do that - for example when the video / audio signal actually leaves is only verifiable with some external equipment... like camera ;)