While I think this chart would be a good item for students to be able to access, I was surprised, when trying it out, that voiceless consonants (p, t, f) are here voiced. When combining the sounds with diphthongs, for example, 'y' with 'ear' to make 'year', (sorry - can't do the phonemic symbols) there is little if any variation of sound between the consonant and the diphthong. What we get sounds like 'year' x 2.