The word "hallenbeck" is spelled as /ˈhælənˌbɛk/. The first syllable "hal" is spelled with the letter "h", followed by the vowel sound "æ" which is spelled with the letter "a". The second syllable "len" contains the vowel sound "ə" which is spelled with the letter "e". The third syllable "beck" is spelled with the letter "b" followed by the vowel sound "ɛ" spelled with the letter "e" and the consonant "k" at the end. This IPA transcription accurately depicts the unique spelling of "hallenbeck".