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...

Recebido em 28.11.2007. Revisado em 01.03.2008; 26.05.2008. Aceito para Publicação em 26.05.2008. Abstract Background: contextual cues intrinsic to speech stimuli can have an influence on speech intelligibility measurements; however, the influence of cues that depend on the acoustic signal, such as speech rate and vocal loudness, need further investigation. Aim: to examine whether possible redu...

A growing body of experimental research suggests that speech supplementation strategies can markedly increase speech intelligibility for individuals with dysarthria (D. Beukelman & K. Yorkston, 1977; E. Crow & P. Enderby, 1989; L. Hunter, T. Pring, & S. Martin, 1991; K. C. Hustad & D. R. Beukelman, 2001). However, studies in which speech supplementation strategies were actually implemented by s...

In adverse listening conditions, talkers can increase their intelligibility by speaking clearly[45, 55, 42]. While producing clear speech, however, talkers often reduce their speaking rate significantly[46, 55]. A recent study[28] showed that speaking slowly is not responsible for the high intelligibility of clear speech, since talkers can produce clear speech at normal rates with training. Thi...

PURPOSE Research comparing the intelligibility of human and synthesized speech among both young children and adults has indicated that synthesized speech results in a degrading of intelligibility. The purpose of this study was to compare speech intelligibility of high-probability sentences produced using DECtalk Perfect Paul and live speech among monolingual English-speaking and bilingual child...

The STI (speech transmission index) and SII (speech intelligibility index) are the two primary objective rating metrics for speech intelligibility. The differences between their calculation models and measured data are examined in this study, and the results show that there is no fundamental difference between them, except those caused due to the different calculation models. Therefore, both ST...

Automatic prediction of speech intelligibility is highly desirable in the speech research community, since listening tests are timeconsuming and can not be used online. Most of the available objective speech intelligibility measures are intrusive methods, as they require a clean reference signal in addition to the corresponding noisy/processed signal at hand. In order to overcome the problem of...

Intelligibility in a telecommunication-based conference application can largely be improved, when the speech signals of the different interlocutors are presented spatially, and when the sources are spatially distributed. For the controlled exploitation of the underlying Cocktail Party Effect in speech chat applications, a prediction of the intelligibility related to a given spatial configuratio...

Early study showed that temporally reversed speech may still be very intelligible. The present work further assessed the role of acoustic cues accounting for the intelligibility of temporally reversed speech. Mandarin sentences were edited to be temporally reversed. Experiment 1 preserved the original consonant segments, and experiment 2 only preserved the temporally reversed fine-structure wav...

Existing objective speech-intelligibility measures are suitable for several types of degradation, however, it turns out that they are less appropriate in cases where noisy speech is processed by a time-frequency weighting. To this end, an extensive evaluation is presented of objective measure for intelligibility prediction of noisy speech processed with a technique called ideal time frequency (...