The brain uses its 'autocorrect' feature to make out sounds ↑
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New research has zoomed in on the brain's speech recognition abilities, uncovering the mechanism through which the brain discerns between ambiguous sounds. The study revealed that a brain area known as the primary auditory cortex picks up the ambiguity of a sound just 50 milliseconds after onset. Then, as the rest of the word unravels, the brain "re-evokes" sounds that it had previously stored while re-evaluating the new sound. After around half a second, the brain decides how to interpret the sound. What's interesting is the fact that the context can occur after the sounds being interpreted and still be used to alter how the sound is perceived.
https://www.medicalnewstoday.com/articles/322864.php