A new procedure for deciding whether a bivariate (two-dimensional, 2-D) polynomial with real or complex coefficients does not vanish in the closed exterior of the unit bi-circle (is “2-D stable”) is presented. It simplifies a recent immittance-type tabular stability test for 2-D discrete-time systems that creates for a polynomial of degree ( 1 2) a sequence of 2 (or 1) centro-symmetric 2-D poly...

Wideband acoustic immitance (WAI) measurements provide an objective means to detect pathological middle ear conditions. However, for ears of young infants, it is still difficult make clear statements about the status based on WAI measurements. In order gain a better understanding data obtained in infants’ ears, parametric electro-acoustic model canal and infants proposed. this first part two-pa...

BACKGROUND Pathologies that alter the impedance of the middle ear may consequently modify the DPOAE amplitude. The aim of this study was to correlate information from 2 different clinical procedures assessing middle ear status. Data from DPOAE responses (both DP-Gram and DP I/O functions) were correlated with data from multi-component tympanometry at 1000 Hz. MATERIAL AND METHODS The subjects w...

In current study, a method for achieving load-independent output with the ability to optimize parameter tuning, which is applied wireless power transfer (WPT) systems, analyzed. The proposed technique based on immittance property in passive resonant network (PRN) purpose of transforming voltage/current resource into current/voltage resource. This study determines an conditions-qualified family ...

• A novel active-passive-combined control approach integrated with an inerter is proposed, to improve the trade-off between dynamic performance and requirements. Automotive suspension design taken as example, analytical expressions for indicators obtained using Lyapunov equations . Pareto optimality improvement a simple inerter-based combined absorber. The optimal passive layout of absorber, co...

In this paper, we propose an improved packet loss concealment (PLC) algorithm for ACELP-based speech coders in order to improve the quality of decoded speech at the receiver. Conventional receiver-based PLC algorithms in the AMR-WB+ speech codec are usually based on speech correlations to reconstruct the decoded speech of the lost frames by using parameter information obtained from the previous...

Transient evoked otoacoustic emissions (TEOAEs) were recorded in 30 normal-hearing subjects to nonlinear clicks while continuous contralateral broadband noise (CBBN) was presented at 40, 50, 60, and 70 dB HL. Thirty subjects between 20 and 79 years were divided system-atically into six-decade age groups, five subjects per group. All subjects in each group had hearing thresholds of 20 dB HL or b...

OBJECTIVES Congenital cytomegalovirus (CMV) infection is one of the most common intrauterine diseases. In all, 1% of live births is affected by cytomegalovirus infection, while 90% neonates with perinatal infection do not show symptoms of disease. Symptomatic CMV is present in 5-10% of children. Typical clinical signs of CMV infection are microcephalia, mental retardation, progressive major amb...