CSD 277 Lecture Notes - Lecture 3: Audiology, Room Acoustics, Tuning Fork

• School: University of Kentucky
• Department: Communication Sciences and Disorders
• Course: CSD 277
• Professor: Robert Marshall

Document Summary

Audiology: understanding normal hearing processes: why acoustics in audiology, branch of physics, physical properties of sound & vibration, applications to communication: Speech production: measurement of hearing, auditory skills, calibration of equipment, ear function, room acoustics, hearing conversation, why psychoacoustics in audiology, relationship between the physical characteristics of sound and human perceptual abilities. In audiology we measure people"s perception of sound: measures, threshold. Lower frequency - fewer cycles/second (man"s voice: pitch - psychological correlate of frequency, mel is unit of measurement for pitch, parameter of sound: intensity (amplitude) Intensity - physical parameter of sound: decibels - metric used to describe range of human hearing: 0-120 db. Logarithmic scale: loudness is the psychological correlate of intensity, decibel - sound pressure level (spl, measured decibels of familiar sounds, conversational speech @ 60 db spl, parameter of hearing: intensity sound pressure (db spl) Threshold of audibility (for good ears: most people listen to music at 85 db, how we hear db (spl)