Quote Originally Posted by randem
The pronunciation pattern that I found, which seems to most closely resemble what I actually hear is as follows.

-The vowels а and о are reduced to ə (schwa) when they occur outside of the stressed syllable, unless they occur in the syllable immediately preceding the stressed syllable.
-The vowels я and е are always reduced to и when they occur outside of the stressed syllable, unless they occur at the end of a word, where they are not reduced because they have to correctly indicate verb tenses and noun cases.
Given that yandex finds 17000 occurences of "знаети" i'm not so sure that terminal 'е' is not reduced to 'и'.