For instance, if we use [,æmplɪfɪ'keɪʃən] [,æmpləfə'keʃən] to indicate how to read "amplification", the practice is called phonetic notation or phonetic transcription, and the symbol is called International Phonetic Alphabet.
My questions are
1) How shall I describe the following practice: "amplification is read as am-pluh-fi-key-shun" Is there a name for the kind of phonetic notation?
2) what's the difference between [IPA] and [this kind of phonetic notation (am-pluh-fi-key-shun for amplification)] in terms of the degree of formality and/or which one is more commonly used?
3)Is it unanimous to use, for intance, -uh- for [ə] in this kind of notation? Maybe other people would write it as am-pli-fi-ki-shion or anything else?