Not that way
I don't think pedestrians are that witless out on the street. The more likely place to get hit is in a parking lot where cars and pedestrians mingle. Pedestrians tend to listen, change direction, then look, assuming that if they don't hear anything that there is nothing moving near them. I have done this myself, nearly getting in the path of a hybrid. I certainly hope they don't go overboard making noise. People will adapt to new realities, but it takes time and you don't want people injured in the interim.