We describe a pitch tracking method based on a time delay estimation technique. Given two frames of voiced speech and it’s time delay, we will run a linear regression on the unwrapped phase of the quotient of the spectrum of both frames. A weighted linear regression will allow us to avoid the effect of phases corrupted by spectral leakage and noise. Iterations adapting the frame length will all...

This paper studies interconnect delay and area estimation for multiple-pin nets with consideration of interconnect optimizations, including optimal wire sizing (OWS), and simultaneous bu er insertion/sizing and wire sizing (BISWS), under two types of optimization objectives: one is to minimize delay to a single critical sink, and the other is to minimize the maximum delay to all critical sinks....

With the Phase-Root-Seeking algorithm a new and very fast algorithm for time delay estimation was recently introduced, permitting the estimation of strain images in real-time. In this paper the accuracy of the real-time strain imaging concept is investigated by the most rigorous approach, i.e. a comparison to the theoretical accuracy limit: the Cramer-RaoLower-Bound. Simulations show, that this...

This paper provides new delay-range-dependent stability criteria in the forms of LMIs for systems with interval time-varying delays. Two cases concerning whether the derivative of the time delay is known are studied. A new estimation method is developed to estimate the nonlinear time-varying coefficients derived from Jenson’s integral inequality more tightly than the existing ones. Along with c...

A time delay estimator for a multi-microphone speech enhancement system with 16 microphones is presented. It is based on a generalized cross-correlator and an improved peak detector. The problems associated with delay estimation in noisy speech signals are solved by performing a speaker localization and a plausibility check of the time delays derived from the speaker position. By applying these...

The effects of a scattering medium on the performance of time-delay estimation are considered. The medium is assumed to exhibit angular scattering, causing angular (as well as delay) dispersion and hence loss of signal coherence across the array aperture. Both the variance (via the Cramer-Rao bound) and the bias introduced in the time-delay estimates are studied. The results have been converted...

This paper addresses the problem of subsample or fractional sample time delay estimation of narrowband signals of known centre frequency, in order to synchronise the signals. The Lagrange interpolator filter is incorporated into the explicit time delay estimator (ETDE) method. In order to achieve this, a new form of the Lagrange interpolator is presented in this paper. Further modifications are...