Study On Features Of Hearing-Speech And Their Relationship For Children With Hearing Impairments And The Training Strategy

In this study, hearing and speech function of children with hearing aids or Cochlear Implant were compared to explore the hearing-impaired children's speech perception and speech production characteristics and their relationships, and play its role in rehabilitation of deaf children in hearing and speech function.First, To evaluate 151 hearing-impaired children for 5 times in one year, to observe the effect of rehabilitation time on Hearing and Speech development through make several designs, this Study found that hearing-impaired children's hearing and speech functions are significantly related; Consonant recognition, speech intelligibility, language expressive ability is the main difficulties in the rehabilitation for deaf children.To analyze the phoneme contrast identification of hearing ability and speech articulation ability and find the specific problem, We evaluate 60 hearing-impaired children's identification of hearing ability and speech articulation ability on 36 Chinese phoneme core contrasts,36 hearing impairment children's phoneme recognition ability and phoneme articulation are significant correlated; Speech recognition capability is higher than phoneme articulation; Consonant phoneme recognition and pronunciation is more difficult for them; We make a score of Consonant Phoneme Contrast as 1 to 6 type, Consonant Phoneme Contrast pair of h/ k, b/f, t/k, and d/g are more prone to the bad listening Leads to "say " badly, which is level 6.In order to explore the Acoustical Cue of the phoneme contrast which are easily be confused by children with hearing impairments, we do acoustical measurements on 4 Chinese phoneme core contrasts which are easily be confused by children with hearing impairments, and find the acoustical cue. The result showed that the slope can serve as an acoustical characteristic parameter of Consonant Phoneme Contrast pair h /k and b/f, the F2Locus can serve as an acoustical characteristic parameter of Consonant Phoneme Contrast pair d/g.Finally, in order to solve the difficult problems showed in above results, we make a simple "phonemic contrast therapy" training strategy, specifically for the consonant phonemes fine recognition and pronunciation training, this strategy is mainly focus on the 21 phonemes, we redesign the articulator training and minimal phoneme contrasts training method, based on the type of articulation and phonological disorder on hearing-impaired children.This Research has drawn the conclusions below:Speech development is rather later than hearing ability on children with hearing impairments. Hearing clearly and speak clearly of Consonant Phoneme Contrast is the main problem in the rehabilitation; Type 3 and Type 6 of Consonant Phoneme Contrast need specific training on both hearing and speech level, more important is their connection; Acoustical characteristic parameters analysis of can make up lack of the subjective sense on assessment. It provides a scientific basis on making specific decisions when judging distorted phoneme articulation, and provides the basic idea for future scientific research; The "phonemic contrast therapy" makes full use of hearing in speech training; it can improve the training accuracy of deaf children's hearing and speech rehabilitation, solve the difficult problems, and help hearing-impaired children in integrated development in the future.