The spelling of the word "Paulsen" is as follows: /ˈpɔːlsən/. The first sound, /p/, is pronounced with a puff of air using the lips. The second sound, /ɔː/, is like the "aw" sound in "law." The third sound, /l/, is made by touching the tip of the tongue to the roof of the mouth. The fourth sound, /s/, is made by blowing air through a small gap between the tongue and the teeth. The fifth sound, /ə/, is the schwa sound, which is the most common vowel sound in English. Lastly, the final sound, /n/, is made by touching the tip of the tongue to the roof of the mouth once again.