"Karl Koller" is a name that is often misspelled due to the similarity in the way the letters are pronounced. The correct spelling of this name is /kɑrl kɔlər/. The first name "Karl" is spelled with a "K" and the last name "Koller" has two "L's" and an "E-R" at the end. The IPA phonetic transcription helps to distinguish between similar sounding words and aids in proper pronunciation. It is important to use the correct spelling of a name to accurately identify a person.