UNLABELLED The current study was undertaken to investigate the impact of speech motor issues on the speech intelligibility of children with moderate to severe speech sound disorders (SSD) within the context of the PROMPT intervention approach. The word-level Children's Speech Intelligibility Measure (CSIM), the sentence-level Beginner's Intelligibility Test (BIT) and tests of speech motor contr...

PURPOSE To determine the mechanisms of speech intelligibility impairment due to neurologic impairments, intelligibility decline was modeled as a function of co-occurring changes in the articulatory, resonatory, phonatory, and respiratory subsystems. METHOD Sixty-six individuals diagnosed with amyotrophic lateral sclerosis (ALS) were studied longitudinally. The disease-related changes in artic...

Running Title: Syllable intelligibility for ltered cepstral trajectories Received: T. Arai et al., \Syllable intelligibility for ltered cepstral trajectories," JASA 2 Abstract We measured the intelligibility of syllables whose cepstral trajectories were temporally ltered. The speech signals were transformed to their LPC cepstral coeecients, and these coeecients were passed through diierent lter...

This paper reports on preliminary experiments aimed at standardizing speech intelligibility of military Callsign Acquisition Test (CAT) using average power levels of callsign items measured by the Root Mean Square (RMS) and maximum power levels of callsign items (Peak). The results obtained indicate that at a minimum sound pressure level (SPL) of 10.57 dBHL, the CAT tests were more difficult th...

Differences in pronunciation have been shown to underlie significant talker-dependent intelligibility differences. There are several dimensions of variability that are correlated with talker intelligibility including pitch range, vowel-space expansion, and rhythmic patterns. Prior work has shown that some of the better predictors of individual intelligibility are based on the talker’s F1 by F2 ...

Most intelligibility tests are based on the use of monosyllabic test stimuli. This constraint eliminates the ability to measure the effects of lexical stress patterns, complex phonotactic organizations, and morphological complexity on intelligibility. Since these aspects of lexical structure affect speech production (e.g., by changing syllable duration), it is likely that they affect the struct...

One way talkers can increase intelligibility is by producing clear speech. Though clear speech, as opposed to conversational speech (ConvS), generally increases intelligibility (known as the clear speech intelligibility benefit), not all talkers exhibit the same degree of benefit. Ferguson showed that while intelligibility increased across talkers for clear speech, when looking at individual ta...

In verbal communication, the primary purpose of which is to convey and understand messages, speakers need to make intelligible utterances. The intelligibility of an utterance depends on the sentence structure, discourse, and the vocabulary usage. In foreign-language utterances, “errors” can reduce the intelligibility. The correct and appropriate use of vocabulary is essential for successful mes...

Purpose A single-word identification test was used to study speech production in children and adults with Down syndrome (DS) to determine the developmental pattern of speech intelligibility with an emphasis on vowels. Method Speech recordings were collected from 62 participants with DS aged 4-40 years and 25 typically developing participants aged 4-7 years. Panels of 5 adult lay listeners tra...