Theories of Speech Perception

-Motor Theory (Liberman) 

1. Close link between perception and production of speech.

•  Use motor information to compensate for lack of invariants in speech signal.
• Determine which articulatory gesture was made, infer phoneme.

  2. Human speech perception is an innate, species-specific skill

  •Because only humans can produce speech, only humans can perceive it as a sequence of                 phonemes .

 •Speech is special 

-Auditory Theory

• Derives from general properties of the auditory system .
• Speech perception is not species-specific.

If you wanna read more here

http://www.cogsci.ucsd.edu/~coulson/Courses/101c/comprehension3.pdf