Purpose: This study examined whether the intraoral transducers used in electromagnetic articulography (EMA) interfere with speech and whether there is an added risk of interference when EMA systems are used to study individuals with aphasia and apraxia. Method: Ten adult talkers (5 individuals with aphasia/apraxia, 5 controls) produced 12 American…

Existing distinctive feature systems have several practical shortcomings which, although they do not necessarily have important consequences for theoretical linguistics, constitute a considerable obstacle to diagnosing and treating speech disorders. (Author)

This book is written as a guide to the understanding of the processes involved in human speech communication. Ten authorities contributed material to provide an introduction to the physiological aspects of speech production and reception, the acoustical aspects of speech production and transmission, the psychophysics of sound reception, the nature…

Revised version of a paper presented at the 77th Meeting of the Acoustical Society of America, Philadelphia, Pennsylvania, April 8-11, 1969; research supported in part by the Science Research Council (U.K.) and by the National Institutes of Health. (RS)

Research was supported by a National Science Foundation grant to Indiana University. (VM)

The availability of cochlear implants in younger children has provided the opportunity to evaluate the relative impact of the production system, or the sounds young children can say, and the auditory system, or the sounds children can hear, on early vocal communication. Limited access to the acoustic properties of speech results in differences in…

Revised version of a paper presented at the 79th Meeting of the Acoustical Society of America, Atlantic City, N.J., April 21-24, 1970; research supported in part by the Science Research Council (U.K.) and by the National Institutes of Health. (RS)

This paper on physiologic correlates of speech production in children and youth with hearing impairments focuses specifically on the production of phonemes and includes data on respiration for speech production, phonation, speech aerodynamics, articulation, and acoustic analyses of speech by hearing-impaired persons. (Author/DB)

Using acoustical evidence from spectrograms and physiological evidence from X-ray sound films, it appears that the most common allophone for the Arabic voiced pharyngeal fricative, at least in Iraqi, is a voiceless stop, and not a voiced fricative, as many believe. The author considers the phoneme in different environments and describes its…

This report, covering the period in 1976 from July 1 through September 30, is one of a regular series on the status and progress of speech research. Manuscript topics are: stop-consonant recognition--release bursts and formant transitions as functionally equivalent, context-dependent cues; modes of perceiving; discrimination of intensity…

Purpose: This study investigated formant frequencies for their role as acoustic and perceptual correlates to the place of articulation of Cantonese final stops produced by profoundly hearing impaired speakers. Method: Speakers were 10 Cantonese adolescents (mean age = 13;5 [years;months]) who were profoundly hearing impaired (HI). Control speakers…

The articulator positions of a man with deafness who had a cochlear implant were measured with an electromagnetic midsagittal articulometer system with and without auditory feedback via his implant. Findings suggest that the cochlear implant was providing important auditory cues that can be used to monitor speech and maintain phonemic contrasts.…