Linguistics The change, especially an umlaut, that is caused in a sound by its assimilation to another sound. 元音变化,变音:由于一个音被另一个音词化而导致的变化,尤其是元音的变化
Guangdong romanization makes use of diacritics to represent certain vowels.This includes the use of the circumflex, acute accent, and umlaut in the letters ê, é, and ü, respectively. 这一系列的拼音方案兼容性较差,只能纪录粤语、客家话、闽语的某几个方言点,而不能纪录这三种语言的大多数方言点。