OBJECTIVE The purpose of this study was to compare vowel productions by deaf cochlear implant (CI) children, hearing-impaired hearing aid (HA) children and normal-hearing (NH) children. PATIENTS AND METHODS 73 children [mean age: 9;14 years (years;months)] participated: 40 deaf CI children, 34 moderately to profoundly hearing-impaired HA children and 42 NH children. For the 3 corner vowels [a...

The 'hyperspace effect' in vowel perception may be taken as evidence that adaptive dispersion is an active perceptual process. However, a previous study tested for adaptive dispersion in isolated vowel stimuli spoken in a voice unfamiliar to the listeners. The experiment reported in this paper addressed both of these potential concerns and found that both consonant context and talker familiarit...

We are investigating acoustical analysis for dysarthric speech, which appears as a symptom of neurologic disease, in order to elucidate its physiological and acoustical mechanism, and to develop aids for diagnosis and training, etc. In this report, acoustical characteristics of various kinds of dysarthrias are measured. As a result, shrinking of the F0 range as well as vowel space are observed ...

PURPOSE Increased speaking rate is a commonly reported perceptual characteristic among males with fragile X syndrome (FXS). The objective of this preliminary study was to determine articulation rate-one component of perceived speaking rate-and vowel space characteristics of young males with FXS. METHOD Young males with FXS (n = 38), developmental age (DA)-matched males (n = 21), and chronolog...

From the TIMIT database labelled speech waveform segments from 33 speakers were extracted. There were 8 categories of speech data, each representing a vowel sound. In each category were 80-130 utterances. The waveform segments were processed by taking a FFT, on 32 msec frames and binning the result into 12 frequency bands. This way each frame will be represented by 12 numbers/values. They becom...

Languages differ in their inventories of distinctive sounds and in their systems of contrast. Here, it is proposed that this observation may have predictive value with respect to how extensively various phones are coarticulated in particular languages. This hypothesis is based on three assumptions: (1) There are "output constraints" on just how a given phone can be articulated; (2) output const...

This paper examines sentence repetition and narrative speech data produced by hearing-impaired and normally hearing children with matched gender, age and level of speech comprehension. We assessed these two kinds of speech styles by talker intelligibility, vowel space, and spike production in plosives. In both speaking styles, normally hearing children performed better in talker intelligibility...

In the production of Swedish, vowel quantity is known to be realized in the vowel, but also affects duration of a postvocalic consonant. The goal of this study is to examine the use of postvocalic consonant duration as a perceptual cue to vowel quantity. Listeners ́ responses and reaction times were recorded for synthesized materials in which the vowel spectra and duration were kept constant and...

It is well known that isolated vowel perception is non-categorical: “if we conceive of a continuum between the ideals of categorical perception and continuous perception, we find that stop consonants are closer to the categorical ideal and vowels are closer to the continuum ideal” (Repp, et al., 1979). But, such a statement was based on perceptual tests with stable vowels and mainly for vowel c...

Eight speakers (4 male and 4 female) of the Muskogee dialect of Creek pronounced a set of words illustrating the vowels and diphthongs of Creek. These recordings were analyzed acoustically and data on vowel duration and vowel formant frequencies are presented in this paper. The ratio of the durations of dictinctively long and short vowels was 1.8. This ratio showed a sex difference, being large...