Speech production in hearing-impaired children

Area of Science:

• Speech-Language Pathology
• Audiology
• Linguistics

Background:

• Only about 20% of deaf individuals' speech is understood by the general public.
• Frequent segmental and suprasegmental errors contribute to poor speech intelligibility.
• Common articulatory issues include voicing errors, consonant omissions, and vowel substitutions.

Purpose of the Study:

• To clarify the correlation between specific speech errors and overall intelligibility in the deaf.
• To investigate the interrelationship between error types and their frequency of occurrence.
• To establish a predictive model for intelligibility improvement based on error correction.

Main Methods:

• Analysis of speech samples from deaf individuals.
• Identification and quantification of segmental and suprasegmental errors.
• Statistical correlation of error types, frequency, and intelligibility ratings.

Main Results:

• Consistent findings on frequently occurring errors in deaf speech.
• Less clear correlation between individual error types and overall intelligibility.
• Need to consider error interrelationships and frequency for accurate interpretation.

Conclusions:

• The impact of specific errors on speech intelligibility is complex.
• Frequency and co-occurrence of errors significantly influence intelligibility.
• Further research is needed to predict intelligibility gains from targeted interventions.