Notes: The diphthong, /aU/, starts close to /^/ and heads toward /u/. Look for F2 close to F1 and heading closer.
A typical /aU/ may look like:
Speaker: Andrew Cronk
Word: the /aU/ section of the word "how"
Speaker: Tim Carmell
Word: the /aU/ section of the word "about"
References:
Course Materials
Spectral Cues Front Page