Jaromir Tovarek

Jaromir Tovarek
VŠB-Technical University of Ostrava · Department of Telecommunications

About

26
Publications
2,763
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86
Citations
Introduction

Publications

Publications (26)
Article
Full-text available
Due to the mechanical nature of container handling operations, as well as natural factors, container and handling infrastructure suffers various types of damage during use, especially within the tight and enclosed environments of a ship’s hull. In this operational environment, it is critical to detect any sort of physical impacts between the vertic...
Article
Full-text available
The article proposes a new speaker liveness test for speech verification systems. Biometric authentication systems based on speaker verification are often subject to presentation attacks which use the target speaker’s recorded speech. We propose a liveness test which uses CNN isolated word ASR as a countermeasure to repel attacks during the verific...
Chapter
This paper presents the initial research findings from the Klaipeda port quay crane monitoring activities related to the Blue economy development initiative in the Baltic Sea and demonstrates the effectiveness of the modelling of the spreader movement patterns. The use case study demonstrates the possibility to monitor the cargo handling processes...
Chapter
The paper is devoted to an isolated word automatic speech recognition. The first part deals with a theoretical description of methods for speech signal processing and algorithms which can be used for automatic speech recognition such as a dynamic time warping, hidden Markov models and deep neural networks. The practical part is focused on the descr...
Article
Full-text available
Human behaviour plays a major role in improving human-machine communication. The performance must be affected by abnormal behaviour as systems are trained using normal utterances. The abnormal behaviour is often associated with a change in human emotional state. Different emotional states cause physiological changes in the human body that affect th...
Article
Full-text available
This paper describes different approaches for the face authentication from the features and classification abilities point of view. Authors compare two types of features - Histogram of Oriented Gradients (HOG) and Local Binary Patterns (LBP) including their combination. These parameters are classified using Multilayer Neural Network (MLNN) and Supp...
Conference Paper
The system which description and realization is presented in this article is intended to expand existing solutions to the emergency services for the distribution of voice messages with pre-recorded content in order to inform target participants about critical events in their surroundings using multimedia tools, based on Session Initiation Protocol....
Conference Paper
This paper presents a method for detecting speech under stress using Self-Organizing Maps. Most people who are exposed to stressful situations can not adequately respond to stimuli. Army, police, and fire department occupy the largest part of the environment that are typical of an increased number of stressful situations. The role of men in action...
Conference Paper
This article discusses the impact of multilayer neural network parameters for speaker identification. The main task of speaker identification is to find a specific person in the known set of speakers. It means that the voice of an unknown speaker (wanted person) belongs to a group of reference speakers from the voice database. One of the requests w...
Conference Paper
This article describes a system for evaluating the credibility of recordings with emotional character. Sound recordings form Czech language database for training and testing systems of speech emotion recognition. These systems are designed to detect human emotions in his voice. The emotional state of man is useful in the security forces and emergen...
Conference Paper
A mobile ad hoc network is a collection of mobile nodes which communicate without a fixed backbone or centralized infrastructure. Due to the frequent mobility of nodes, routes connecting two distant nodes may change. Therefore, it is not possible to establish a priori fixed paths for message delivery through the network. Because of its importance,...
Article
Full-text available
The impact of the classification method and features selection for the speech emotion recognition accuracy is discussed in this paper. Selecting the correct parameters in combination with the classifier is an important part of reducing the complexity of system computing. This step is necessary especially for systems that will be deployed in real-ti...
Article
The paper is focused on the building ad-hoc GSM network based on open source software and low-cost hardware. The created Base Transmission Station can be deployed and put into operation in a few minutes in a required area to ensure private communication between connected GSM mobile terminals. The convergence between BTS station and the other networ...
Conference Paper
Impact of changes in blood pressure and pulse from human speech is disclosed in this article. The symptoms of increased physical activity are pulse, systolic and diastolic pressure. There are many methods of measuring and indicating these parameters. The measurements must be carried out using devices which are not used in everyday life. In most cas...
Conference Paper
It is well known that Quantum Key Distribution (QKD) can be used with the highest level of security for distribution of the secret key, which is further used for symmetrical encryption. B92 is one of the oldest QKD protocols. It uses only two non-orthogonal states, each one coding for one bit-value. It is much faster and simpler when compared to it...
Conference Paper
Emotional states of humans and their impact on physiological and neurological characteristics are discussed in this paper. This problem is the goal of many teams who have dealt with this topic. Nowadays, it is necessary to increase the accuracy of methods for obtaining information about correlations between emotional state and physiological changes...
Chapter
Emotional state classification of human speech and recognition accuracy of the classifiers is disclosed in this paper. Recent developments in speech recognition places more emphasis on the extraction of information about the speech source. This means obtain information about who and how it was said. This article describes research which seeks to re...
Article
This article discusses impact of human emotions on physiological characteristics and their changes. Many fields require applications that provide information about the emotional state of a human. Today's research is mainly concerned with increasing the accuracy of the methodology for obtaining this information. Studied subjects were psychologically...

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Projects

Project (1)
Project
The project aims to create solutions that will support secure communications between mobile devices within organizations and other networks.