LING2002 Lecture Notes - Lecture 2: Extensions To The International Phonetic Alphabet, Speech Disorder, Audiometry

• School: UWA
• Department: Linguistics
• Course: LING2002
• Professor: JOHN HENDERSON

Document Summary

Language pathology: phonetics and phonology are relevant to: Speech disorders: congenital physical disorders (things we are born with, developmental, acquired through brain or speech system injury. Hearing impairment: inherited, acquired through injury, age, speech disorder. Extended ipa represents common types of mis-articulation: hearing impairment. Sound is repeated in small waves of air pressure closer/further apart. Nearly all the sounds we hear involve a broad range of different frequencies with different intensities. Human hearing is not equally sensitive to sounds of different frequencies: most sensitive at around 2-5 khz. People tend to become less sensitive to sound intensity as they age, but not equally at all frequencies. Audiology: audiometry shows that this 12 year old girl has: Relatively small de cit at low frequencies (around the pitch of the human voice) Signi cant de cit at higher frequencies: sounds like [ ] and [s] in english have nearly all of their energy at higher frequencies (3-10 khz)