Communication Sciences and Disorders 4411A/B Lecture Notes - Lecture 5: Sound Pressure, Vocal Tract, Josh G. Abrahams
16 Oct 2018
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Document Summary
1 hertz = 1 sound wave vibration (cycle) per second. Frequency: rate of vibration of the sound source, number of complete sound wave cycles in one second, unit of measurement = hertz (hz, e. g. , 300 complete sound wave cycles in one second = 300 hz. 0 db: smallest sound pressure detectable by typical human listener, reference point for hearing, does not equal 0 sound. Logarithmic, not additive: e. g. , an increase of 10 db means the sound pressure level is 10 times larger. Loudness: how intensity sounds to the listener, higher amplitude hits eardrum with greater intensity louder perceived sound. What is hearing loss: hearing loss (hl) condition in which individual is unable to detect or distinguish range of sounds normally available to human ear, decrease in hearing acuity or clarity due to malfunction of hearing mechanisms. Classification of hearing loss: type of hearing loss, degree of hearing loss, location of hearing loss, configuration of hearing loss.
