This page teaches controlled sound targets from our reviewed catalogue. It does not claim one universal whole-word IPA transcription: the sounds in a word can vary by speaker and target variety.
Reviewed sound focus
/j/
Received Pronunciation (British) · Cockney (British) · General American
Like the start of /iː/. 'Yes' /jɛs/. British keeps it in 'tune' /tjuːn/; American drops it /tun/.
Common slip: No universal substitution is claimed; compare the recording with the target-accent reference.