(a.) Produced by the friction or rustling of the breath, intonated or unintonated, through a narrow opening between two of the mouth organs; uttered through a close approach, but not with a complete closure, of the organs of articulation, and hence capable of being continued or prolonged; -- said of certain consonantal sounds, as f, v, s, z, etc.
(n.) A fricative consonant letter or sound. See Guide to Pronunciation, // 197-206, etc.
Example Sentences:
(1) Phoneme identification responses collected in the same experiments, as well as informal observations about the quality of the restored phoneme, suggested that restoration of a fricative phone distinct from the extraneous noise did not occur; rather, the spectrum of the extraneous noise itself influenced phoneme identification.
(2) In another experiment, interdependence of two phonetic judgments was found in responses based on the fricative noise and the vocalic formants of a fricative-vowel syllable.
(3) As expected, glottal vibration extended over a longer time in the obstruent interval for voiced fricatives than for voiceless fricatives, and there were more extensive transitions of the first formant adjacent to voiced fricatives than for the voiceless cognates.
(4) Hearing-impaired persons with reduced voicing perception for final fricatives were studied for improvement in perception via training or enhancement of the vowel duration cue.
(5) Another cue for the fricative-affricate distinction is the duration of the fricative noise in SHOP (CHOP).
(6) We report experimental results that confirm Kohler's perceptual assumption: In the context of a following word initial stop, fricatives were less confusable than nasals or unreleased stops.
(7) When errors were analyzed according to manner of production, affricatives and fricatives were significantly more susceptible to error than all others.
(8) Studies on vowel and consonant recognition suggest enhancing all speech features, but particularly frication and place of articulation should help most patients.
(9) Suppression of neural responses to the stop did not depend on whether the neuron responded to either the preceding fricative or the following vowel.
(10) Nasopharyngoscopy was used as a visual feedback tool in a 10-year-old girl who had a repaired bilateral cleft lip and palate and was unable to establish velopharyngeal closure during production of sibilant-fricative sounds.
(11) The results suggest that listeners base their voicing judgments of intervocalic fricatives on an assessment of the time interval in the fricative during which there is no glottal vibration.
(12) That is to say, although hearing speakers commonly use a larger laryngeal gesture for fricatives than for stops and also show durational differences of the abduction and the adduction phases between phonetic categories, the hearing-impaired subjects did not make them.
(13) The selection of measurements was based on a theoretical analysis that indicated the acoustic and aerodynamic attributes at the boundaries between fricatives and vowels.
(14) In studying language change, Ohala and Lorentz (1977) observed that when the labial-velar glide [w] occurs adjacent to fricative noise, the resulting complex of acoustic features is most often perceived and pronounced as a labial, rather than a velar consonant.
(15) Immediately following word-learning experiments, subjects were asked to place 16 CVs into five phonemic categories (voiced & unvoiced stops, voiced & unvoiced fricatives, approximants).
(16) Among the auditory variables examined, the listeners' tone thresholds at 250 Hz showed the highest relation to perception of fricative voicing.
(17) Taken together with previous results, these experiments indicate that listeners take the whole fricative noise, as well as the transitions, into account in fricative identification.
(18) When enhanced, the vowels of the utterances were lengthened before voiced fricatives and shortened before voiceless fricatives.
(19) Analysis included computation of speech intensity contours, fundamental frequency contours, and spectral parameters from sustained productions of vowels and voiceless fricatives.
(20) The effects of different distance measures, filter orders, recognition schemes, and vowels and fricatives were comparatively assessed to determine their effectiveness for the task of gender recognition from speech segments.
Occlusive
Definition:
Example Sentences:
(1) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
(2) It is concluded that acute renal denervation augments the pressure diuresis that follows carotid occlusion.
(3) The operative arteriograms confirmed vascular occlusive phenomenon.
(4) In our experience DSA is a safe, specific means of following postoperative grafts and diagnosing their occlusion.
(5) However in the deciduous teeth from which the successional tooth germs were removed, the processes of tooth resorption was very different in individuals, the difference between tooth resorption in normal occlusal force and in decreased occlusal force was not clear.
(6) We reviewed our experience with femorofemoral bypass during the past 10 years to define its role relative to other methods in the treatment of aortoiliac occlusive disease.
(7) Plasmin-alpha 2-antiplasmin complex was not detected in any of the subjects after venous occlusion.
(8) A retrospective review was undertaken of 127 lower extremity fasciotomies performed for compartment syndrome after acute ischemia and revascularization in 73 patients with vascular trauma and 49 patients with arterial occlusive disease.
(9) Patients with inflammatory bowel disease showed decreased tissue-type plasminogen activator antigen release (t-PA Ag), no significant Von Willebrand antigen release (vWF Ag), and a residual plasminogen activator inhibitor activity (PAI activity) after venous occlusion.
(10) Atrial extrasystoles and short sequences of atrial tachycardias were observed in most dogs after occlusion.
(11) The conus was found to contribute little to forward flow under ordinary circumstances, but its contribution increased greatly during bleeding or partial occlusion of the truncus.
(12) Review of the records of five patients with CPSE treated with radiologic occlusion procedures showed that these are suitable alternatives to surgery.
(13) A patient with a history of hypertension had a combined central retinal artery and vein occlusion in one eye.
(14) The pain response will be significantly better than the dysfunction response when the patient is treated with an occlusal splint.
(15) With the teeth in occlusion, lip separation was reduced.
(16) The risk of total occlusion and clot formation in the renal artery after subintimal injection is high.
(17) Seventy-eight patients presented optochiasmal arachnoiditis: 12 had trigeminal neuralgia; 1, arachnoiditis of the cerebellopontile angle; 6, arachnoiditis of the convex surface of the brain; and 3, the hypertensive hydrocephalic syndrome due to occlusion of the CSF routes.
(18) The same dose of clonidine evoked a much larger drop in blood pressure in another group of rats in which an equialent increase in blood pressure was produced by bilateral section of the vagosympathetic trunks and occlusion of both carotid arteries.
(19) At autopsy, 3 of the 15 patients who had normal angiograms were found not to have had thrombotic occlusions.
(20) Five of the children presented an "aplastic crisis," for example, a sudden decrease in hemoglobin concentration associated with absence of reticulocytes in the peripheral blood, and four were admitted with unremitting severe pain because of a "vaso-occlusive crisis."