Coffin vowel chart
Resurrection from the Coffin (Article)
The author suggests that the Favorable Vowel Chart included in the writings of Berton Coffin over thirty years ago, needs to be resurrected, employing new theories of vowel modification and voice registers. (posted 2:34 PM, August 27, 2014)
Another Incremental Step in Reviving and Revising Coffin's Favorable Vowel Chart (Article)
In a previous issue the author proposed a new way of looking at pitch-vowel interaction in singing as promulgated by Berton Coffin. In a yearly update, Dr. Titze writes that the basic goal of understanding why certain vowels are favored at certain pitches has not changed. (posted 2:34 PM, August 27, 2014)