ðə sˌɛpɚɹˈeɪʃən pɹˈɪnsɪpəl stˈeɪts ðætðə stˈeɪt ˈɛstᵻmˌeɪɾɚ ænd ðə stˈeɪt fˈiːdbæk kæn biː dɪzˈaɪnd ˌɪndᵻpˈɛndəntli.
The separation principle states that the state estimator and the state feedback can be designed independently.