This website was created to help people improve their American English pronunciation. At the core is a series of videos explaining in detail how each sound is created, as well as a blog.
How to make this sound:
Video Text:
The uh sound. This is very related to the uh as in 'butter,' but there's a difference in the tongue position, and a difference in the lip position. What the tongue does, is it comes more forward than it does for the uh {butter} sound, and it also raises a little bit in the back. But it doesn't touch the roof of the mouth. Uh, uh. So it comes up a little bit in the back and then forward. The lips, as you can see, uh, they come out a little bit, and the corners come in just a little bit. Uh {butter}, uh {full}, uh {butter}, uh {full}. Uh, butter -- uh, should, could, full. Sample words: full, could. Sample sentence: You should look at that woman's foot.
International Phonetic Alphabet symbol: [
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Read more about this vowel and see other languages in which it occurs here.