2、美国音是用K.K.(John S. Kenyon 与 Thomas A. Knott美国语言学家)音标。

　　3、IPA 是International Phonetic Alphabet(国际音标，即英国音标)。

　　4、RP 是 Received Pronunciation 的缩写，翻译为「可接受的发音」，即英国国家广播公司(BBC)的英语，可谓标准英语，但仍谦称为「可接受的发音」。ting.24en.com

　　现在中学教材使用了新的音标符号， 即 Daniel Jones 于1977年在English Pronouncing Dictionary( 第 14 版 ) 中所使用的新的音标符号。（主要是元音变化）。现在出版的字典每个单词大多注有国际音标，以英国丹尼尔.琼斯(Daniel Jones)的语音词典最新版本(15版)为依据，为读者提供标准英语发音。

　　Daniel Jones (1881 - 1967) was a British phonetician. He was a disciple of Paul-Edouard Passy. He wrote The Pronunciation of English in 1909 and The outline of English Phonetics in 1918. This is considered to be the first comprehensive description of Received Pronunciation. He uses the term phoneme in the current sense.

　　Jones uses in his theory a two-parameter diagram to visualize how vowels are produced and he promoted the term cardinal vowel. The two parameters are tongue height and lip-shape. Many later models at the end of the twentieth century are still based on this model.   www.24en.com

　　Jones studied the phonetics of various languages. In particular for example he did an analysis of the tone in Tswana. He developed new alphabets for African and Indian languages.