Pitch perception

Pitch is a subjective sensation that we hear, although the perceived pitch of a sound is related to its physical frequency, which can be measured on a suitable instrument. Sounds such as speech and music involve many frequency components and can give rise to complex sensations of pitch. Faulty pitch perception is a symptom associated with severe sensorineural hearing loss; this can make understanding speech more difficult and music less satisfying to listen to. Some people experience different sensations of pitch in their two ears – a condition known as diplacusis.