The unique concept of an 'original sound'

 HMJ phonetics uses the unique concept of an ‘original sound’. It means not a certain sound itself but a sound originally pronounced at the ‘articulate point’ to make it. Otherwise, a certain sound is just the combination of an original sound and other sounds derived. In HMJ phonetics only this original sound(s) is(are) written in brackets by a phonetic symbol(s). So HMJ phonetic's phonetic symbols in a word are much more simple than IPA phonetics' are.