In civil engineering, Time Delay Estimation (TDE) is one of the most important tasks for the media structure and quality evaluation. In this paper, the MUSIC algorithm is applied to estimate the time delay. In practice, the backscattered echoes are highly correlated (even coherent). In order to apply the MUSIC algorithm, an adaptation of signal subspace smoothing is proposed to decorrelate the ...

Recently, there has been an increased interest in the use of the time-delay estimation (TDE) technique to locate and track acoustic sources in a reverberant environment. Typically, the delay estimate is obtained through identifying the extremumof the generalized cross-correlation (GCC) function or the average magnitude difference function (AMDF). These estimators are well studied and their stat...

The incorporation of purified neutral protease and class I & class II collagenase isolated from C. histolyticum culture supernatants into defined tissue dissociation enzyme (TDE) mixtures was in part responsible for the success of the Edmonton protocol. The enzyme composition of Liberase HI Purified Enzyme Blend (HI) was determined by using design of experiment methodology to optimize the conce...

In this paper we address the problem of sound source localization in the presence of impulsive noise for application in immersive telepresence and teleconferencing. Traditional Gaussian modeling of noise signals fails when the signals exhibit impulsive behavior. A new model is used, namely the Symmetric a-Stable (SaS), which can better account for the outliers that exist in real-world signals. ...

3 results of this exercise tend to indicate that core mesh networks will remain opaque for some time. This column then explores the potential opportunity for cost reduction and scalability by introducing transparent switches in opaque networks. However, several challenges, both in technology and in network architecture, will have to be addressed before one can achieve the potential benefits of ...

In this paper we propose to present Asymptotic Tracking applied to the tracking problem for a Turbocharged Diesel Engine (TDE). Our goal is to track desired values of TDE which are the gas pressure in the intake manifold and the compressor mass flow rate. Nevertheless for this system with its chosen outputs one faces to the known problem of non-minimum phase systems. To avoid this, the problem ...

To locate an acoustic source in a room, the relative delay between microphone pairs must be determined efficiently and accurately. However, most traditional time delay estimation (TDE) algorithms fail in reverberant environments. In this paper, a new approach is proposed that takes into account the reverberation of the room. A realtime PC-based TDE system running under Microsoft Windows system ...

Robust time delay estimation is necessary for many microphone array applications. Reverberant echoes and background noise can corrupt the estimates. Typically the signals and noise are modeled as Gaussian random processes and second moment information is used for time delay estimation. However, many signals are impulsive and should be modeledusing alpha-stable distributions. Because ofthis impu...

The reflectance factors of transparent fibers, free delustering agent, are predicted by geometric as well as Kubelka-Munk models.&#10 Transparent fibers are simulated by a net of glass capillary tubes containing different solutions of dyestuffs. Based on the results, prediction of the reflectance factor of capillary net by geometric model is relatively better than those obtained from Kubelka-Mu...