Show I Dont Don't Talk So Loud When Speaking to to the Deaf Iowa City Iowa Deaf Deaf people do donot donot donot not enjoy loud talk When allowed to adjust the loudness loudness loudness loud loud- ness of the voice to which they are listening individuals with normal ears eara prefer to have it 38 33 decibels or loudness units above the level at which it Is audible of Hard hearing persons will adjust the same lame speech at a loudness only 23 to 20 above their threshold of hearing bearing This was discovered in experiments experiments ex ex- at the University of Iowa by Dr Noble H. H Kelley Deaf ears eara function differently f Mn f-Mn m normal ears Dr Kelley Keller found 1 lu speaking to those with normal hearing you will wiD have most difficulty In making your consonant sounds understood vowel sounds are most intelligible For the deafened the consonants are reco recognized practically practical practical- ly as a. easily as al the vowels |