After the first few months of life, babies enter what is known as the stage, during which time they tend to produce single syllables, such as buh-buh, that are repeated over and over. babbling baby talk lexicon phoneme

The answer is "babbling" stage.

Babbling is a phase in kid’s development and a state in dialect acquisition amid which a newborn child gives off an impression of being exploring different avenues regarding expressing articulate sounds, yet does not yet create any recognizable words. At about half year, your infant starts babbling with various sounds. For instance, your infant may state "ba-ba" or "da-da, etc.

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