Browsing 2004/3 by Title
Now showing items 5-10 of 10
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Diffraction Calculations and Measurements in Millimeter Frequency Band
(Společnost pro radioelektronické inženýrství, 2004-09)The paper deals with a study of diffraction on dielectric wedge (building corner) in millimeter frequency band, both theoretically and experimentally, to provide knowledge support for ray tracing/launching calculations of ... -
Enhancing the Accuracy of Microwave Element Models by Artificial Neural Networks
(Společnost pro radioelektronické inženýrství, 2004-09)In the recent PSpice programs, five types of the GaAs FET model have been implemented. However, some of them are too sophisticated and therefore very difficult to measure and identify afterwards, especially the realistic ... -
MAP Based Speaker Adaptation in Very Large Vocabulary Speech Recognition of Czech
(Společnost pro radioelektronické inženýrství, 2004-09)The paper deals with the problem of efficient adaptation of speech recognition systems to individual users. The goal is to achieve better performance in specific applications where one known speaker is expected. In our ... -
Optimized Second-Order Dynamical Systems and Their RLC Circuit Models with PWL Controlled Sources
(Společnost pro radioelektronické inženýrství, 2004-09)Complementary active RLC circuit models with a voltage-controlled voltage source (VCVS) and a current-controlled current source (CCCS) for the second-order autonomous dynamical system realization are proposed. The main ... -
Study and Application of Silence Model Adaptation for Use in Telephone Speech Recognition System
(Společnost pro radioelektronické inženýrství, 2004-09)This paper addresses the problem of the mismatch between a silence model and background noises which often occurs in a telephone speech recognition system (SRS) application. At first, the use of parallel model combination ... -
Suppression of EM Fields using Active Control Algorithms and MIMO Antenna System
(Společnost pro radioelektronické inženýrství, 2004-09)Active methods for attenuating acoustic pressure fields have been successfully used in many applications. In this paper we investigate some of these active control methods in combination with a MIMO antenna system in order ...