[Phonetics] Aspirated vs. Ejective

在IPA符號裡，在右上角的 h 是 Aspirated 的符號。
但還有另外一個符號是Ejective，以 ’(apostrophe)來表示。

我看過使用IPA的人，將送氣音以上述兩種方法來標示。
似乎有混淆的情形。 （註1）

但查了一下IPA ，發現Aspirated 是屬於diachritics
而Ejective則是 non-pulmonic consonant。

這兩者到底有什麼差別？
我寫email問了Janice Fon
她給我的回答是：
Aspiration is just an extra puff of air at the burst of stop.
Ejective is an airstream mechnism created by moving up the larynx.

而Wikipedia的對asperated解釋則是：
You should either feel a puff of air or see a flicker of the candle flame with top that you do not get with stop.

ejective的解釋則是：
Ejectives are voiceless consonants which are pronounced with simultaneous closure of the glottis. The glottis is raised while the forward articulation (a [k] in the case of [k’]) is held, raising air pressure in the mouth, so that when the [k] is released, there is a noticeable burst of air.


Well,
還挺不容易理解的....
據說我們的課本第三章會討論這個問題
期待ing...


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註1：
Wikipedia在ejective一條當中特別註明：
A reversed apostrophe represents aspiration, as in Armenian [p‘ t‘ k‘]; this usage is obsolete in the IPA.