Pronunciation: [ɹˈɪt͡ʃəsən] (IPA)
Correct spelling for the English word "richerson" is [ɹˈɪt͡ʃəsən], [ɹˈɪtʃəsən], [ɹ_ˈɪ_tʃ_ə_s_ə_n] (IPA phonetic alphabet).