Rob J J H van Son

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Speaking rate in general, and vowel duration more specifically, is thought to affect the dynamic structure of vowel formant tracks. To test this, a single, professional speaker read a long text at two different speaking rates, fast and normal. The present project investigated the extent to which the first and second formant tracks of eight Dutch vowels(More)
OBJECTIVES Assessment of long-term objective and subjective voice, speech, articulation, and quality of life in patients with head and neck cancer (HNC) treated with concurrent chemoradiotherapy (CRT) for advanced, stage IV disease. MATERIALS AND METHODS Twenty-two disease-free survivors, treated with cisplatin-based CRT for inoperable HNC (1999-2004),(More)
Interactions between factors affecting consonant duration are well known. It has proved difficult to quantify these interactions. The difficulty lies in the enormous amount of speech necessary to resolve all factor combinations and their uneven distribution in speech, i.e., factor confounding. Assuming piecewise independence of factor combinations and an(More)
The error dispersion is a perplexity related measure of the effective number of error categories used by listeners in an identification experiment. The error difference is calculated from the error dispersions of several confusion matrices and measures the difference between these confusion matrices. The error dispersion and the error difference are largely(More)
OBJECTIVES To investigate the relationship between acoustic signal typing and perceptual evaluation of sustained vowels produced by tracheoesophageal (TE) speakers and the use of signal typing in the clinical setting. METHODS Two evaluators independently categorized 1.75-second segments of narrow-band spectrograms according to acoustic signal typing and(More)
OBJECTIVES Perceptual judgments and patients' perception of voice and speech after concurrent chemoradiotherapy (CCRT) for advanced head and neck cancer. STUDY DESIGN Prospective clinical trial. METHODS A standard Dutch text and a diadochokinetic task were recorded. Expert listeners rated voice and speech quality (based on Grade, Roughness, Breathiness,(More)
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