CantoneseIPAOperator --- IPA for Cantonese ========================================== :class:`cjklib.reading.operator.CantoneseIPAOperator` is an experimental implementation of a transcription of Cantonese into the *International Phonetic Alphabet* (*IPA*). .. index:: pair: stop; tones Features: - Tones can be marked either with tone numbers (1-6), tone contour numbers (e.g. 55), IPA tone bar characters or IPA diacritics, - choice between high level and high falling tone for number marks, - flexible set of tones, - support for stop tones, - handling of variable vowel length for tone contours of stop tone syllables and - splitting of syllables into onset and rhyme. Specifics --------- CantonteseIPAOperator does not supply the same closed set of syllables as other ReadingOperators as IPA provides different ways to represent pronunciation. Because of that a user defined IPA syllable will not easily map to another transcription system and thus only basic support is provided for this direction. This operator supplies an additional method :meth:`~cjklib.reading.operator.CantoneseIPAOperator.getOnsetRhyme` which allows breaking down syllables into their onset and rhyme. Tones ^^^^^ Tones in IPA can be expressed using different schemes. The following schemes are implemented here: - Numbers, tone numbers for the six-tone scheme, - ChaoDigits, numbers displaying the levels of tone contours, e.g. 55 for the high level tone, - IPAToneBar, IPA modifying tone bar characters, e.g. ɛw˥˥, - None, no support for tone marks Implementational details ^^^^^^^^^^^^^^^^^^^^^^^^ The operator comes with three different set of tones to accommodate the user but at the same time handle all different tone types. This setting is controlled by option ``'stopTones'``, where ``'none'`` will force the set of 7 basic tones, ``'general'`` will add the three stop tones found in :attr:`~cjklib.reading.operator.CantoneseIPAOperator.STOP_TONES`, and ``'explicit'`` will add one stop tone for each possible vowel length i.e. *short* and *long*, making up the maximum count of 13. Internally the set with explicit stop tones is used. Sources ^^^^^^^ - Robert S. Bauer, Paul K. Benedikt: Modern Cantonese Phonology (摩登廣州話語音學). Walter de Gruyter, 1997, ISBN 3-11-014893-5. - Robert S. Bauer: Hong Kong Cantonese Tone Contours. In: Studies in Cantonese Linguistics. Linguistic Society of Hong Kong, 1998, ISBN 962-7578-04-5. .. seealso:: `Modern Cantonese Phonology `_ Preview on Google Books. .. index:: pair: Cantonese; IPA Class ----- .. currentmodule:: cjklib.reading.operator .. autoclass:: cjklib.reading.operator.CantoneseIPAOperator :show-inheritance: :members: :undoc-members: