As we have discovered in previous posts, and as I have prefaced many times before that, the main problem with considering the sounds of language, is that not all people sound out language in the same way. There are many variations which may depend on regional dialects, first languages, social class or even speech impediments. It is a hugely complicated task to attempt to take account of all the variations of English which might exist. For this reason, when we talk about the sound qualities of particular phonemes we do so in relation to a standard form of English.