My studies taught me there's two ways to say each mora in Japanese, with the way you normally talk and when you put a bit more emphasis on a mora, i.e. when someone says なつかしい, the word would be ...
The pitch contour of the interjection ううん has been described as high, low, middle. Alternatively, it has been described as a falling-rising tone. In either case, this appears to be unique in ...