The Available Bit Rate Service (ABR) has been designed to be an eecient data transport Service for ATM networks. The standardization bodies have deened the Dynamic Generic Cell Rate Algorithm (DGCRA) as the Conformance Deenition for ABR. When setting up an ABR connection, a Cell Delay Variation Tolerance (CDVT) has to be negotiated for the DGCRA. In this report we study the CDVT dimensioning fo...

Auditory impairments are considered to be one of the most frequent neurosensorial problems in human. The normal development and myelination of the auditory system can be impaired by certain pathological conditions such as viral infections, hyperbilirubinemia, meningitis, fetal distress and perinatal asphyxia. The early detection of this hearing loss can be diagnostic with sensitive techniques, ...

OBJECTIVE This article aims to describe the characteristics of the binaural interaction component (BIC) of speech-evoked auditory brainstem response (ABR). MATERIALS AND METHODS All 15 subjects had normal peripheral hearing sensitivity. ABRs were elicited by speech stimulus /da/. RESULTS The first BIC (BIC-SP1) in the speech-evoked ABR occurred at around 6 ms in the region of peak V. The se...

Objectives: The result of auditory brainstem response is used worldwide for detecting hearing impairments or hearing aids. This study aimed to introduce the superiority of mathematical innovation algorithm toward subjective evaluation by an audiologist. The automatic algorithm method is encouraged for detecting the waves of Auditory Brainstem Response (ABR), because it can reduce subjective eva...

In this paper we consider ABR traffic which shares an output port of a switch with delay sensitive CBR/VBR traffic. Congestion control of the ABR traflic is achieved by mean? of an Explicit Rate control scheme. Two important performance measurea are evaluated using an analytical model : the ABR-buffer occupancy distribution in the switch and the ABR traffic throughput. We consider two types of ...

OBJECTIVE To report an infant with congenital cytomegalovirus and progressive sensorineural hearing loss, who was assessed by three methods of hearing evaluation. CASE DESCRIPTION In the first audiometry, at four months of age, the infant showed abnormal response in Otoacoustic Emissions and normal Auditory Brainstem Response (ABR), with electrophysiological threshold in 30dBnHL, in both ears...

Many sounds in the environment, including speech, are temporally dynamic. The auditory brainstem is exquisitely sensitive to temporal features of the incoming acoustic stream, and by varying the speed of presentation of these auditory signals it is possible to investigate the precision with which temporal cues are represented at a subcortical level. Therefore, to determine the effects of stimul...