Jyutping (sometimes spelled Jyutpin) is a romanization system for Standard Cantonese developed by the Linguistic Society of Hong Kong (LSHK) in 1993. Its formal name is The Linguistic Society of Hong Kong Cantonese Romanization Scheme. The LSHK promotes the use of this romanization system.
Note that the "j" used by this romanization system is the "j" used by IPA, which is equivalent to the "y" used by English speakers or most Chinese romanization systems.
Jyutping input method is the only Cantonese input method available in Microsoft's Vista products.
The finals m and ng can only be used as standalone nasal syllables.
^^^ Referring to the colloquial pronunciation of these words.
Tones
There are nine tones in six distinct tone contours in Cantonese. However, as three of the nine are entering tones (入聲), which only appear in syllables ending with p, t, and k, they do not have separate tone numbers in Jyutping (though they do in Yale; these are shown in parentheses in table below).
But they have difference with the following exceptions:
The vowelseo and oe represent /ɵ/ and /œː/ respectively in Jyutping, while the eu represents both vowels in Yale.
The initialj represents /j/ in Jyutping while y is used instead in Yale.
The initial z represents /ts/ in Jyutping while j is used instead in Yale.
The initial c represents /tsʰ/ in Jyutping while ch is used instead in Yale.
In Jyutping, if no consonant precedes the vowel yu, then the initial j is appended before the vowel. In Yale, the corresponding initial y is never appended before yu under any circumstances.
Jyutping defines three finals not in Yale: eu/ɛːu/, em/ɛːm/, and ep/ɛːp/. These three finals are used in colloquial Cantonese words, such as deu6 (掉), lem2 (舐), and gep6 (夾).
To represent tones, only tone numbers are used in Jyutping while Yale originally uses tone marks together with the letter h (though tone numbers can be used in Yale as well).
Comparison with Standard Cantonese Pinyin
Jyutping and the Standard Cantonese Pinyin represent Cantonese pronunciations with the same letters in:
The initials: b, p, m, f, d, t, n, l, g, k, ng, h, s, gw, kw, j, w.
The coda: i (except of being the coda/y/ in Jyutping), u, m, n, ng, p, t, k.
But they have some differences:
The vowelsoe represent /ɵ/ and /œː/ in Standard Cantonese Pinyin while the eo and oe represent /ɵ/ and /œː/ respectively in Jyutping.
The vowel y represent /y/ in Standard Cantonese Pinyin while both yu (use in nucleus) and i (use in coda) is used in Jyutping.
The initial dz represents /ts/ in Standard Cantonese Pinyin while z is used instead in Jyutping.
The initial ts represents /tsʰ/ in Standard Cantonese Pinyin while c is used instead in Jyutping.
To represent tone, numbers 1 to 9 are usually used in Standard Cantonese Pinyin (as in Yale), though substituting 1, 3, and 6 for 7, 8, and 9 is acceptable. However, only numbers 1 to 6 are used in Jyutping.
The Jyutping method allows a user to input Chinese characters by entering the jyutping of a Chinese character (with or without tone, depending on the system) and then presenting the user with a list of possible characters with that pronunciation.