Using an identification task, we examined lexical effects on the perception of vowel duration as a cue to final consonant voicing in 12 children with specific language impairment (SLI) and 13 age-matched (6;6-9;6) peers with typical language development (TLD). Naturally recorded CV/t/sets [word-word (WW), nonword-nonword (NN), word-nonword (WN) and nonword-word (NW)] were edited to create four ...

Most vowel identifiers constructed in the past were designed on the principle of "pattern matching"; that is, for each vowel a pattern of some set of measurable parameters, such as a particular energy density spectrum, frequency location of the formants, axis crossing density, and so on, was chosen to represent the average or "ideal" set for that vowel. These patterns were stored in the apparat...

Purpose: To assess the auditory perceptual performance of children in a task of identification of vowel contrasts, to classify which phonemes and vowel contrasts provide higher or lower degrees of difficulty, and to verify the influence of age in this performance. Methods: Data recordings of auditory perceptual performance of 66 children in a task of identification using the software Perception...

OBJECTIVE To determine the effect of reduced dynamic range on speech understanding when the speech signals are processed in a manner similar to a 6-channel cochlear implant speech processor. DESIGN Signals were processed in a manner similar to a 6-channel cochlear implant processor and output as a sum of sine waves with frequencies equal to the center frequencies of the analysis filters. The ...

Speaker variability in the coarticulation of the vowels / a , i , u / was investigated in / C iVC 2^ / pseudo-words, containing the consonants /p . t .k .d ^ n M .r / . These words were read out in isolation by fifteen male speakers of Dutch. The formants F |_3 (in Bark) were extracted from the steady-state of each vowel / a j , u / . Coarticulation in each of 1200 realisations per vowel was me...

The purpose of this study was to examine the effect of reduced vowel working space on dysarthric talkers' speech intelligibility using both acoustic and perceptual approaches. In experiment 1, the acoustic-perceptual relationship between vowel working space area and speech intelligibility was examined in Mandarin-speaking young adults with cerebral palsy. Subjects read aloud 18 bisyllabic words...

This study explored the effects of pitch cues on the identification of the word-final Japanese vowel length, which is primarily cued by vowel duration. Native speakers of English (NE), Chinese (NC) and Japanese (NJ) participated in the experiment. Learners, who do not use duration distinctively in their L1, utilize duration as a cue for the contrast and they can approximate boundary location to...

The automatic identification of prosodic events such as pitch accent in English has long been a topic of interest to speech researchers, with applications to a variety of spoken language processing tasks. However, much remains to be understood about the best methods for obtaining high accuracy detection. We describe experiments examining the optimal domain for accent analysis. Specifically, we ...

Six experiments explored why the identification of the two members of a pair of diotic, simultaneous, steady-state vowels improves with a difference in fundamental frequency (delta F0). Experiment 1 confirmed earlier reports that a delta F0 improves identification of 200-ms but not 50-ms duration "double vowels"; identification improves up to 1 semitone delta F0 and then asymptotes. In such sti...

Vowel quality perception in quantity languages is considered to be unrelated to vowel duration since duration is used to realize quantity oppositions. To test the role of microdurational variations in vowel category perception in Estonian listening experiments with synthetic stimuli were carried out, involving five vowel pairs along the close-open axis. The results show that in the case of high...