An earlier paper [J. Opt. Soc. Am. A 1, 775 (1984)] described a general ideal discriminator (a Stimuli-Defined-Exactly observer) whose sensitivity is limited only by the initial sequence of mechanisms in the visual system--the optics of the eye, the receptor lattice, receptor optics, and photopigment spectral sensitivities. In the present paper, further properties of the model are derived, and ...

Most flow models used in numerical simulation of voiced sound production rely, for the sake of simplicity, upon a certain number of assumptions. While most of these assumptions constitute reasonable first approximations, others appear more doubtful. In particular, it is implicitly assumed that the air flow through the glottal channel separates from the walls at a fixed point. Since this assumpt...

A terminating algorithm is developed for the problem of finding the point of smallest Euclidean norm in the convex hull of a given finite point set in Euclidean n-space, or equivalently for finding an "optimal" hyperplane separating a given point from a given finite point set. Its efficiency and accuracy are investigated, and its extension to the separation of two sets and other convex programm...

An analysis is performed to study the effect of non-uniform slot injection (suction) into a steady two-dimensional laminar boundary layer flow with an applied magnetic field. Non-similar solutions have been obtained from the starting point of the streamwise co-ordiante to the exact point of separation. The difficulties arising at the starting point of the streamwise co-ordinate, at the edges of...

Direct numerical simulation data of a Mach 2.9, 24◦ compression ramp configuration are used to analyse the shock motion. The motion can be observed from the animated DNS data available with the online version of the paper and from wall-pressure and mass-flux signals measured in the free stream. The characteristic low frequency is in the range of (0.007–0.013) U∞/δ, as found previously. The shoc...

This paper describes the development of a new visual and audio display on which users can view images and listen to sounds at arbitrary positions. In this system, the ray-space method is used for the selectable viewpoint, and a signal separation method based on frequency-domain independent component analysis is used for the selectable listening point. For the selectable listening point, individ...

Air separation Units (ASU) is widely used in many industries. ASU is difficult to operate due to high degree of energy integration. In this paper, steady-state and dynamics simulation of one of China Steel Corporation’s air separation unit have been studied. The goal is to figure out the formula among gaseous product demands and set points values of the control loops in this unit, and to build ...

We demonstrate the efficient separation of blood cells from millilitre volumes of whole blood in minutes using a simple gravity sedimentation device. Blood cell and plasma separation is often the initial step in clinical diagnostics, and reliable separation techniques have remained a major obstacle for the success of point-of-care or remote diagnostics. Unlike plasma collection devices that rel...

We present a method for audio source separation and localization from binaural recordings. The method combines a new generative probabilistic model with time-frequency masking. We suggest that device-dependent relationships between point-source positions and interaural spectral cues may be learnt in order to constrain a mixture model. This allows to capture subtle separation and localization fe...

Blind separation of instantaneous linear mixtures of digital signals is a basic problem in communications. When little or nothing can be assumed about the mixing matrix, signal separation may be achieved by exploiting structural properties of the transmitted signals, e.g., finite alphabet or coding constraints. We propose a monotonically convergent and computationally efficient iterative least ...