Here's a breakdown:
* Short vowel sound: These are the vowel sounds that are typically pronounced quickly and with a shorter duration, such as the "i" in "bit" or the "a" in "cat."
* Schwa sound: This is a neutral vowel sound that is often considered the "weakest" vowel sound in English. It's the vowel sound in words like "about" (əˈbaʊt) or "the" (ðə).
Why does this happen?
This change occurs when the short vowel sound is in an unstressed syllable of a word. Unstressed syllables are often pronounced with less emphasis and clarity, leading the short vowel to become a schwa.
Example:
* Original word: "about" (with a short "a" sound)
* Pronunciation: əˈbaʊt (with a schwa sound in the first syllable)
Other examples:
* "above" → əˈbʌv
* "open" → ˈoʊpən
* "inside" → ˈɪnˌsaɪd
* "under" → ˈʌndər
Important notes:
* This change doesn't happen to *all* short vowels in unstressed syllables, but it's a common pattern.
* The exact pronunciation of the schwa sound can vary slightly depending on the context and the speaker's accent.
Understanding "short to schwa" can help you pronounce English words correctly and improve your fluency.