The temporal difference limen (TDL) can be measured with noninvasive electrical ear canal stimulation. The objective of the study wa to determine the role of preoperative TDL measurements in predicting patients' speech perception after cochlear implantation. We carried out a retrospective chart analysis of fifty-four cochlear implant (CI) patients with preoperative TDL and postoperative bisylla...

Simplified broadband beamformers can be constructed by sharing a single tapped-delay-line within a narrowband subarray. This paper discusses the use of fractional delay filters to a steering in the digital domain. For the narrowband subarrays, an optimisation approach is proposed to maintain an off-broadside look direction constraint as best as possible across a given frequency range. We demons...

We focus on the problems of accurate time delay estimation, design training pilots, and hybrid matrix optimization within large-scale antenna array Terahertz (THz) broadband communication system. In contrast to existing researches based narrow-band arrays, we hereby shed light estimation arrays. THz systems, data symbol duration is relatively short when comparing with dimension array. signals r...

We use fine-detuning of pump wavelengths to adjust the tap phases in a complex-coefficient optical tapped-delay-line that utilizes conversion/dispersion-based delays and nonlinear wave mixing. Full 2π phase tuning is demonstrated by detuning the frequency of laser pumps by <20  GHz, which shows close agreement with theory.

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.

An iterative method is proposed for the analysis of the steadystate weight fluctuations in an LMS-type adaptive FIR filter. Without the widely used independence assumption, a power series of the weighterror correlation matrix is derived in terms of the stepsize. Some new effects are observed, e.g., a decrease of the weight fluctuations along the tapped-delay line.

We illustrate the mathematical background and musical use of a class of audio effects based on frequency warping. These effects alter the frequency content of a signal via spectral mapping. They can be implemented in dispersive tapped delay lines based on a chain of all-pass filters. In a homogeneous line with first-order all-pass sections, the signal formed by the output samples at a given tim...

This paper designed a tapped delay line Time-to-Digital Converter(TDC) based on 0.18μm CMOS, there is total level 128 voltage-controlled delay line.The symmetric delay phase-locked loop is used to increase the stability of delay chain and reduce the system clock’s skew and jitter. The simulation results show that : when the voltage is 1.8V, and the reference clock frequency is 250MHz, the least...