In this work we propose an efficient technique to quantize the immitance spectral frequency (ISF) in an algebraic code-excited linear prediction (ACELP) wideband codec. The Constrained Voicing-Based Vector Quantization (C-VBVQ) presented in this paper improves substantially the performance of the unconstrained-VBVQ approach for both clean and noisy speech. Both techniques reduce the codebook se...

This paper presents a new class of models for predicting air traffic delays. The proposed models consider both temporal and spatial (that is, network) delay states as explanatory variables, and use Random Forest algorithms to predict departure delays 2-24 hours in the future. In addition to local delay variables that describe the arrival or departure delay states of the most influential airport...

We formulate control problems for linear systems with delays in input and output, and discuss possibility of finite-dimensional characterizations of solutions. In the case when delay exists in control input and controlled output, first, we derive an output feedback control formula of the central solution type, which is given by using solutions of finiteand infinite-dimensional Riccati matrix in...

The SCELP (Spherical Code Excited Linear Prediction) audio codec, which has recently been proposed for low delay audio coding [5], is based on linear prediction (LP). It applies closed-loop vector quantization employing a spherical code which is based on the Apple Peeling code construction rule. Frequency warped signal processing is known to be beneficial especially in the context of wideband a...

System delays affect user performance and experience when interacting with computers. We investigated the effects of different prediction relations between delay duration and response requirements on user performance. In one experiment, delay duration predicted, to different degrees (50 % vs. 75 % vs. 100 %), the following system response. Predictability substantially increased users’ response ...

Abstract: A new, low computation complexity technique for prediction of the average delay of IP packets, transported over cellular data networks with SR-ARQ loop, is presented in this paper. This prediction takes into account the SR-ARQ influence on the average IP packet delay, assuming that the MAC works with a static schedule policy (offering a fixed periodic access to radio resources). This ...

The main control problem of visual servoing is to cope with the delay introduced by image acquisition and image processing. This delay is the main reason for limited tracking velocity and acceleration. Predictive algorithms are one solution to handle the delay. The drawback of prediction algorithms is the bad prediction behavior for the discontinuity in the target motion, for example, a velocit...

In this paper, we present motion and force predictions in Internet-based teleoperation systems using the particle filter method. The particle filter, also known as the sequential Monte Carlo (SMC) method, is a probabilistic prediction or estimation technique within a sequential Bayesian framework: Data at a current time step are predicted or estimated by recursively generating probability distr...

The multi-step prediction problem of chaotic time series with one sampling delay is investigated in this paper. The delay is considered to be random and is modelled by a binary white noise with values of zero or one, and these values indicate that the observation arrives on time or that it is delayed by one sampling time. Based on the original extended Kalman filtering (EKF) and the Unscented K...