Using Virtual Singer on Harmony Assistant, I have a long note with the English word "hour". As this word contains two vowel sounds (i.e. it is a diphthong), how can I control the relative lengths of the first and second vowels? Thanks, David.
I would suggest to use the SAMPA notation, but I'm not sure whether the length of each vowel can be controlled. Perhaps by duplicating the "A" sound (first vocalic sound of the diphtong) in the SAMPA chain.