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In the emerging field of E-Commerce we show the great potential interest to create 3D virtual shopping centers. The study of a specific application: the creation of an electric household applicants warehouse enables us to highlight the possibilities of the VRML2.0 language to model, visualize and to do interactive walking inside the warehouse. Key features(More)
Statistically progressive deteriorations in the population, due more to pathological impairments than to aging properly speaking, must be distinguished from presbycusis. The onset of auditive impairment varies with genetic factors. In a statistical audiometric study, it is found that the better the hearing of a subject before the impact of presbycusis, the(More)
The assessment of speech perception and speech reading has been studied with the phonetic test of J.C. Lafon (lists of 17 french words with 3 phonemes each). 168 children from 7 to 17 have been collected. Deafness was moderate, severe or profound. It was always congenitaly sensoneural hearing loss. In order to precise data, results are giving regard to(More)
The hearing of 23 children with cleft palates was studied at an early age (before 12 months) and before pharyngoplasty using the electrophysiologic method of auditory brain-stem response. Nineteen children showed important degrees of conduction deafness of 50 or 60 dB. Results were compared with those obtained for a group of normal children tested under the(More)
  • J C Lafon
  • 1981
Research on the hearing loss at 2 000 and 4 000 Hz which enabled us to estimate the loss at 3 000 Hz would appear to be the best measure of occupational noise-induced hearing loss: this measure is the most specific and the most discriminating of the suggested formulas. Calculation of the social handicap must take into consideration the same frequencies and(More)