In this paper an experimental setting is described which allows to separately record the speech signals emitted from the mouth and the nostrils. A series of transitions from an oral configuration to the nasopharyngeal configuration is then recorded with a speaker capable to control the movement of his velum while minimizing that of other articulators. The analysis of the recorded signals in the...

This paper presents our progress towards a convenient and non-invasive real-time method to measure the state of the velum (raised vs. lowered) that works both during normal and silent speaking. The method emits acoustic signals with a power band from 12 to 24 kHz into a nostril and analyzes the “echo” from the nasal cavity. Here we describe two design iterations of the method, present first tes...

This study compares velar movements for nasal vowels and consonants; it investigates contextual nasalisation; and it provides new data on how nasalisation is affected by speech rate. Velar position is measured with an electromagnetic articulatograph (EMA) for two French speakers. Our results confirm that (i) nasal vowels are produced with a lower velum height than nasal consonants; (ii) the con...

This paper presents new temporal information regarding the production of European Portuguese (EP) nasal vowels, based on new EMMA data. The influence of speech rate on duration of velum gestures and their coordination with consonantic and glottal gestures were analyzed. As information on relative speed of articulators is scarce, the parameter stiffness for the nasal gestures was also calculated...

In this paper new EMMA data regarding European Portuguese nasals is presented. Some details about corpus constitution, recording and annotation is given. First results from analysis are presented. Quantitative analysis of velum movement was done for nasal vowels between stops. For the other contexts representative examples are presented and qualitatively analysed. In all contexts nasal vowels a...

The coordination of velum and lingual gestures for Brazilian Portuguese nasal vowels in CV syllables is studied with real-time magnetic resonance imaging (rt-MRI). Four syllable structures were compared: stop-oral vowel, stop-nasal vowel, nasal-oral vowel, nasal-nasal vowel. Results show near-synchrony timing (in-phase) for the consonant onset and nasal vowel’s lingual onset, and for the conson...

background and objective: numerous anatomical abnormalities or pathological conditions can cause upper airway obstruction in obstructive sleep apnea syndrome (osas). muller’s maneuver (mm) is one of diagnostic modalities investigating the obstruction site in patients with osas. this study aimed to investigate the obstruction sites of patients with osas based on mm. materials and methods: this w...

The molluscan cardiovascular system typically incorporates a transient extracardiac structure, the larval heart, early in development, but the functional importance of this structure is unclear. We documented the ontogeny and regulatory ability of the larval heart in relation to two other circulatory structures, the true heart and the velum, in the intertidal gastropod Littorina obtusata. There...

OBJECTIVE To describe upper airway collapse patterns observed on drug-induced sedation endoscopy (DISE) during screening for a clinical trial and to evaluate the impact of collapse patterns found on preoperative DISE on response rates to upper airway stimulation (UAS) therapy. STUDY DESIGN Retrospective review of an ongoing prospective multi-institutional cohort study. SETTING Twenty-two pa...