Recent US military events have produced a desperate need for language data in languages which have previously been given very little attention. Data resources for languages of military interest are often unavailable or insufficient to adequately develop new technologies. Realizing this need, the Defense Language Institute Foreign Language Center, has created a language data distribution center,...

This paper introduces a digital waveguide model of a flute which features a full set of finger holes of a real flute. The model responds correctly to real playing techniques, including the fingering combinations, overblowing, and vibrato. Many of the flute model parameters, such as the lengths of delay lines and finger hole filter parameters, have been computed from measurements taken from a re...

This work presents a low-dimensional physical model of the glottis in which a 2-D fold displacement representation allows to represent both the vertical and longitudinal displacements of the folds. We use a one-mass mechanical model, coupled to aerodynamic driving forces, and we use a delay line representation to account for the propagation of the displacement on the body-cover. The waveform is...

Linewidth variations within an external-cavity mode of a grating-cavity laser were measured with high accuracy using the self-homodyne technique with a short delay line. To our knowledge, this is the first time that these variations have been accurately measured. In our laser, we observed the linewidth to change by a factor of five from 30 kHz to more than 150 kHz when the laser was tuned over ...

New results on the physical limitations to position resolution in gas detectors for X-rays ( 3-20 due to the range of photoelectrons and Auger electrons are discussed. These results were obtained with a small gap detector in which position readout was accomplished by using a very low noise centroid finding technique. A description is given of position sensitive detectors for medium rates (a few...

An excitation model describes how the bow drives the oscillation of the string when moved across it. The string model describes the resonance of the string and usually includes a backfeed loop. The simplest string model is that of Karplus and Strong which consists of a feedback delay line with an order-2 lowpass. More complex string models take the two transverse oscillation modes of a string a...

We introduce the concept of an indirect photonic transition and demonstrate its use in a dynamic delay line to alter the group velocity of an optical pulse. Operating on an ultrafast time scale, we show continuously tuneable delays of up to 20 ps, using a slow light photonic crystal waveguide only 300 μm in length. Our approach is flexible, in that individual pulses in a pulse stream can be con...

In this paper, the channel is estimated by using kalman filter. The channel is time varying modeled as a low-Pass tapped delay line filter that is work as the FIR filter with time varying Coefficients. Here Kalman filter technique is used to estimate the time varying coefficient of the channel.

We present an analysis comparing the thermal noise in Fabry-Perot and delay-line interferometers with half-infinite mirrors. With a center to center spot spacing of at least twice the Gaussian beam spot size a delay line produces significantly less phase noise than a comparable Fabry-Perot interferometer for the case of half infinite mirrors at frequencies where test mass thermal noise usually ...