At vowel onset following unvoiced consonants in /h-cvc/ utterances spoken by two talkers, Fo began high and fell about seven percent in the first five centiseconds. At closure of voiced oral obstruents, Fo suddenly dipped about ten percent, remained flat, suddenly rose about twenty five percent at opening of closure, and, after vowel onset,…

This paper examines the validity of the concept of linguistic units in a theory of speech production. Substantiating data are drawn from the study of the speech production process itself. Secondarily, an attempt is made to reconcile the postulation of linguistic units in speech production theory with their apparent absence in the speech signal.…

This report is one of a regular series on the status and progress of speech research. The 16 manuscript topics are: the relative accessibility of semantic and deep structure syntactic concepts, some relationships between articulation and perception, reflex activation of laryngeal muscles by sudden induced subglottal pressure changes, dynamic…

Smith (1973), Stampe (1972), and Braine (1973) believe that by the time the child speaks his perception is well-developed, and that any discrepancy between child forms and adult forms are due to organizational and production difficulties. Other linguists believe immature perception determines the form of child speech. This paper suggests that…

This paper deals with problems concerning the nature of the input to a phonetic processor. Several assumptions provide the basis for consideration of the problem. There is a phonological level of processing which reflects the sound structure of the language; the rules associated with it are not affected by variables associated either with the…

This volume is devoted to phonetics and phonology. It consists of the following papers: (1) "Generative Phonology, Dependency Phonology and Southern French," by J. Durand, which discusses aspects of a regional pronunciation of French, the status of syllables in generative phonology, and concepts of dependency phonology; (2) "On the…

This study investigated the perception of place and secondary articulation contrasts in different syllable positions by Russian and Japanese listeners. The consonants involved in the study were the Russian plain (velarized) and palatalized labial and coronal voiceless stops in syllable-initial and syllable-final positions at word boundaries. The…

This report is one of a regular series on the status and progress of speech research. Manuscript topics are categories and context in the perception of isolated steady-state vowels; tongue position in rounded and unrounded front vowel pairs; the reading behavior of dyslexics: is there a distinctive pattern?; articulatory units: segments or…

In order to improve speech perception by transposing the speech signals to lower frequencies, to determine which aspects of the information in the acoustic speech signals were influenced by transposition, and to compare two different methods of training speech perception, 44 subjects were trained to discriminate between transposed words or…

This document contains 21 reports on speech research relating to the following areas: phonology, speech development, speech perception, phonetics, short-term memory of tactile stimuli, reading, linguistic and paralinguistic interchange, computer processing of EMG (electromyographic) signals, pitch determination by adaptive autocorrelation method,…

Paraphrase, as it reflects the processes of remembering rather than those of forgetting, implies that language is best transmitted in one form and stored in another. The dual representation of linguistic information that is implied by paraphrase is important for storing information that has been received and for transmitting information that has…

Purpose: The primary aim of this study was to examine differences in speech/language and written language skills between children with suspected childhood apraxia of speech (CAS) and children with other speech-sound disorders at school age. Method: Ten children (7 males and 3 females) who were clinically diagnosed with CAS (CAS group) were…

This book seeks to point out the difficulties which remain in phonetic theory because of a legacy from prephonemic days when phonetics and phonemics were one. Sounds were shown to have been chosen for description because of their use in speech rather than because of their articulatory or acoustic nature; many sounds were ignored because they were…

Automatic speech recognition is expected to be more successful when syntactically-related information is incorporated into early stages of recognition. Phonemic decisions, in particular, are expected to be more accurate and less ambiguous when contextual information is considered. A computer program detected about 90% of all boundaries between…

This collection on speech research presents a number of reports of experiments conducted on neurological, physiological, and phonological questions, using electronic equipment for analysis. The neurological experiments cover auditory and phonetic processes in speech perception, auditory storage, ear asymmetry in dichotic listening, auditory…