John-Paul Hosom

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Spoken responses produced by subjects during neuropsychological exams can provide diagnostic markers beyond exam performance. In particular, characteristics of the spoken language itself can discriminate between subject groups. We present results on the utility of such markers in discriminating between healthy elderly subjects and subjects with mild(More)
A set of freely available, universal speech tools is needed to accelerate progress in the speech technology. The CSLU Toolkit represents an effort to make the core technology and fundamental infrastructure accessible, affordable and easy to use. The CSLU Toolkit has been under development for five years. This paper describes recent improvements, additions(More)
Dysarthria is a speech motor disorder usually resulting in a substantive decrease in speech intelligibility by the general population. In this study, we have significantly improved the intelligibility of dysarthric vowels of one speaker from 48% to 54%, as evaluated by a vowel identification task using 64 CVC stimuli judged by 24 listeners. Improvement was(More)
We report on our recent efforts toward a large vocabulary Vietnamese speech recognition system. In particular, we describe the Vietnamese text and speech database recently collected as part of our GlobalPhone corpus. The data was complemented by a large collection of text data crawled from various Vietnamese websites. To bootstrap the Vietnamese speech(More)
Dysarthria is a motor speech impairment affecting millions of people. Dysarthric speech can he far less intelligible than that of non-dysarthric speakers, causing significant communication difficulties. The goal of this work is to understand the effect that certain modifications have on the intelligibility of dysarthric speech. These modifications are(More)
Determining the location of phonemes is important to a number of speech applications, including training of automatic speech recognition systems, building text-to-speech systems, and research on human speech processing. Agreement of humans on the location of phonemes is, on average, 93.78% within 20 msec on a variety of corpora, and 93.49% within 20 msec on(More)
We describe a corpus of children’s speech, called the OGI Kids’ Speech corpus, and a speakerand vocabularyindependent recognition system trained and evaluated with these data. The corpus is composed of both prompted and spontaneous speech from 1100 children from kindergarten through grade 10. The prompted speech was presented as text appearing below an(More)
Speech produced by subjects during neuropsychological exams can provide markers other than test performance, via spoken language characteristics that discriminate between subject groups. We present preliminary results on the utility of such markers, automatically derived from spoken responses to narrative recall tests, in discriminating between healthy(More)