The proper spelling for the phrase "study at perfume" is actually "studied perfume." The pronunciation of the word "studied" in IPA phonetic transcription is /ˈstʌd.iːd/, with the stress on the first syllable. It is important to use accurate spelling and pronunciation when communicating to avoid confusion and misunderstanding. In this case, the phrase should be correctly written and pronounced as "studied perfume," which means that someone has learned about the topic of perfume.