منابع مشابه
Minimally Audible Noise Shaping*
Normal quantization or requantization noise is white, but the ear's sensitivity to low-level broad-band noise is not uniform with frequency. By adopting a suitable weighting curve to represent low-level noise audibility, one can design dithered requantizing noise shapers to approximate the inverse of the audibility curve and hence achieve the least audible noise penalty. If Fielder's modified E...
متن کاملReducing audible spectral discontinuities
In this paper, a common problem in diphone synthesis is discussed, viz., the occurrence of audible discontinuities at diphone boundaries. Informal observations show that spectral mismatch is most likely the cause of this phenomenon. We first set out to find an objective spectral measure for discontinuity. To this end, several spectral distance measures are related to the results of a listening ...
متن کاملNo audible wheezing
Mouse models of T helper type 2 (Th2) cell-biased pulmonary inflammation have elucidated mechanisms of sensitization, cell traffic, and induced airway hyperresponsiveness (AHR). Nonetheless, most mice lack intrinsic AHR, a central property of human asthma, and disparities persist regarding the contributions of eosinophils and mast cells and the sensitivity to induced AHR in the commonly used mo...
متن کاملAudible sphenoid-sellar fistula: An unusual complication of transphenoidal surgery.
Eustachian tube problems are relatively common complaints to otolaryngologists' offices. However, clinicians should consider other possibilities when traditional therapies fail to improve symptoms. We present a previously not described case of sphenoid-sellar fistula after transphenoidal surgery causing objective and subjective clicking. Laryngoscope, 126:E314-E316, 2016.
متن کاملOptimizing Emergency Awakening to Audible Smoke Alarms: An Update
OBJECTIVE This review examines research on arousal from sleep in an emergency. It considers whether the current smoke alarm signal is optimal for waking those most at risk of dying in a fire and, if not, how it may be improved. BACKGROUND The fire fatality rate during the sleeping period is approximately three times greater than at other times. METHOD Four key areas are reviewed: (a) the ch...
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ژورنال
عنوان ژورنال: Nature
سال: 1881
ISSN: 0028-0836,1476-4687
DOI: 10.1038/025125a0