What is another word for acousma?
Pronunciation: [ˈaka͡ʊsmə] (IPA) 
Acousma refers to a phantom sound, typically described as a buzzing, ringing or whistling noise in the ear that has no external source. There are several synonyms for the term acousma, including tinnitus, phonophobia, sonophobia and auditory hallucination. Tinnitus is a widely used term for hearing a sound that isn't present in the external environment, while phonophobia refers to a fear of loud noises. Sonophobia describes an extreme aversion to sound, while auditory hallucination is a perception of sound that's not actually present. These terms highlight the variety of ways in which acousma manifests itself and are useful for diagnosing and treating this condition.
