when a young infant hears the same sound over and over such as ba-ba-ba- what will happen
Phonological development Reduplicated babbling contains consonant-vowel (CV) syllables that are repeated in reduplicated series of the same consonant and vowel (e.g., [bababa]). At this stage, infants’ productions resemble speech much more closely in timing and vocal behaviors than at earlier stages. Starting around 6 months babies also show an influence of the ambient language in their babbling, i.e., babies’ babbling sounds different depending on which languages they hear. For example, French learning 9-10 month-olds have been found to produce a bigger proportion of prevoiced stops (which exist in French but not English) in their babbling than English learning infants of the same age.[19] This phenomenon of babbling being influenced by the language being acquired has been called babbling drift.[20]
Misophonia As of 2016 the literature on misophonia was limited.[1] Some small studies show that people with misophonia generally have strong negative feelings, thoughts, and physical reactions to specific sounds, which the literature calls "trigger sounds". These sounds are apparently usually soft, but can be loud. One study found that around 80% of the sounds were related to the mouth (eating, slurping, chewing or popping gum, whispering, etc.), and around 60% were repetitive. A visual trigger may develop related to the trigger sound.[1][3] It also appears that a misophonic reaction can occur in the absence of an actual sound.[1]