SPTH2002 Lecture Notes - Lecture 7: Induction Loop, Otitis Media, Speech Perception
30 Jul 2018
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Document Summary
Background noise is measured as signal to noise ratio - snr which can vary from positive to negative. For children who have a hearing impairment, there might be an ambient background noise that would be coming from lots of different directions, which makes it difficult to hear when there are other noise going on in the classroom. Important to understand as speech pathologist to get their head around the formula, that tells us whether they have a favourable signal to noise ratio or not. The difference between the signal trying to listen to and every other noise going around. For children with hearing impairment, there is noise in the classroom that comes from different directions. Teachers go around the classroom as they don"t stand in front the whole time. Children have this challenge of pulling the teacher"s voice (signal) from the background noise. If it is a poor signal to noise ratio, then sometimes will get 0db.
