What did the initial phonetic notation look like?

Who created the forty-eight phonetic symbols in English, and what did the original phonetic symbols look like? Everyone, this question is very professional. I went to check the information specifically. It was found that there are two types of phonetic symbols, the currently well-known one is the International Phonetic Symbol. It is designed to mark the pronunciation of various international languages. Many linguists make partial modifications to the International Phonetic Alphabet to mark the languages ??they study, so there are many types of International Phonetic Alphabets. It was developed in 1888 by linguists from the International Phonetic Association. The forty-eight phonetic symbols in English belong to the British Phonetic Symbols, which were researched and formulated by British phonetician Daniel Jones. The International Phonetic Symbols for British pronunciation are represented by his initials DJ.

So, what did the original phonetic symbols look like? Let me show you:

Long vowels: baia: ?: ?: i: u:;

Short vowels: ? i u e ?

Double vowels Sound: ei ai ?i i? ε? u u au;

Voiceless consonants: p t k f θ s ? h ts t? tr

Voiceed consonants: b d g v ? z ? r dz d? dr ;

Nasal: m n ?

Semi-vowel: w j; lateral du sound: zhil

Pronunciation method:

/i: / Put the tongue against the lower teeth, flatten the lips into a smile, and make a long sound of "一". It is the sound of the letters ea, ee, ey, ie, or ei in the word. This sound is a long vowel, so be sure to pronounce the sound fully.

/?/ The tongue touches the lower teeth, the lips are flat and separated, the gums are close to the whole tongue, and a short "一" sound is produced. The pronunciation of the letter i or y in a word should be short and brisk.

/?/ The lips are flat, the front of the tongue is slightly raised, the tip of the tongue is against the lower gums, the gums are open, the soft palate is raised, and the lips are naturally open. It is the pronunciation of the letter a in a closed syllable or a stressed closed syllable

/e/ The tongue is close to the hard palate, the tip of the tongue is against the lower teeth, and the gums are half open and half closed, making a smile. It is the pronunciation of the letter e or ea in the word

/з:/ The tongue is raised, the lips are in a natural state, the mouth is half open and half closed, and the long sound of "E" is pronounced. It is the pronunciation of the letters er, ir, or or ur in the word

/?/ The tongue is raised, the lips are in a natural state, the mouth is half open and half closed, and the short sound of "E" is pronounced. It is the pronunciation of the letters a, o, u, e, or, er or ur in words

/ɑ:/ The lips are open and not round, the gums are wide open, the back of the tongue is slightly raised, and the tip of the tongue is backward It rises and shrinks slightly away from the lower teeth, making a long sound of "ah". It is the pronunciation of the letter er in a closed syllable or a stressed closed syllable, and it is also the pronunciation of the letter a in words ending with st.

/?/ The lips are flat, the gums are half-open, the tip of the tongue is against the lower gums, the back of the tongue is slightly raised, and a short "ah" sound is made, which is the pronunciation of the letter o or u in the word.