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Design of Hearing Aids in LabVIEW
Macíček, Ondřej ; Tannenberg, Milan (referee) ; Sekora, Jiří (advisor)
This thesis contains the block diagram of hearing aid, anatomy description of human hearing system and description of most important physical values in this problematics of hearing and sound. There are analyzed several types of hearing tests for diagnosis of the hearing loss level and some types of algorithms, which fit the frequency characteristic of patient's hearing loss too. Further this thesis contains interactive program of hearing aid, which has implemented equations for sound equalization.
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Use of neural networks in classification of heart diseases
Skřížala, Martin ; Tannenberg, Milan (referee) ; Hrubeš, Jan (advisor)
This thesis discusses the design and the utilization of the artificial neural networks as ECG classifiers and the detectors of heart diseases in ECG signal especially myocardial ischaemia. The changes of ST-T complexes are the important indicator of ischaemia in ECG signal. Different types of ischaemia are expressed particularly by depression or elevation of ST segments and changes of T wave. The first part of this thesis is orientated towards the theoretical knowledges and describes changes in the ECG signal rising close to different types of ischaemia. The second part deals with to the ECG signal pre-processing for the classification by neural network, filtration, QRS detection, ST-T detection, principal component analysis. In the last part there is described design of detector of myocardial ischaemia based on artificial neural networks with utilisation of two types of neural networks back – propagation and self-organizing map and the results of used algorithms. The appendix contains detailed description of each neural networks, description of the programme for classification of ECG signals by ANN and description of functions of programme. The programme was developed in Matlab R2007b.
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ST-T segments analysis of ECG signals with focusing on T-wave alternance
Tannenberg, Milan ; Sovka, Pavel (referee) ; Tyšler,, Milan (referee) ; Kozumplík, Jiří (advisor)
The Cardiovascular diseases may evocated the high percentual risk of sudden cardiac death in whole world. In several western countries is the number of death higher then number of cancer death. In this time is used a lot of methods for prediction of sudden cardiac death with focus on ECG T-wave alternance. The aim of the theses was to do stronger relation and cooperation with Internal Cardiac Clinic of Faculty Hospital Brno Bohunice on the risk analysis of sudden cardiac death. Secondly, we met the methods used for detection and quantification of simulated TWA. Last but not least was necessary to find TWA detection methods improvement and process the data on real signals obtained from Faculty Hospital Brno Bohunice. First part of the Thesis is focused on summary of pathologic artifacts in ECG signal, which are important for sudden cardiac risk stratification. There are described further known detection and quantification methods for TWA analysis. An interesting part for clinical practice is analysis of TWA trend in time and looking for the best method, which is able to catch and track the short TWA trend changes. Second part describes the new methods improvements, which were tested with interesting outputs. Further, there was developed method for TWA presence statement probability evaluation.
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Workplace for testing of the laser diodes
Zemánek, Martin ; Tannenberg, Milan (referee) ; Wilfert, Otakar (advisor)
Bachelor thesis is focused on laser diodes and proposal in their workplace testing, followed by constructing workplace with program for graphical output with processed values of measurment. Laser diodes paramaters as optical power, symmetry of the laser beam and radiation characteristic are the objective of this thesis. Thesis includes the theory of laser diodes, device list, workplace layout, description of measurment methods, followed by measuring and and processing the values in program with graphical output. Resulting values are compared with catalog data.
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IR thermometer with automatic emissivity correction
Dobesch, Aleš ; Tannenberg, Milan (referee) ; Poliak, Juraj (advisor)
Diploma thesis deals with basic physical quantities and laws relating to non-contact temperature measurement and emissivity determination of solids. It describes the design and implementation of the IR (Infra-Red) thermometer often missed with automatic emissivity correction. The first chapter explains the concept of temperature and basic principles of temperature measuring . The second chapter focuses on the history and theory of non-contact temperature measurement. Gradually are explained the concepts related to non-contact temperature measurement and the problem of determining the emissivity of the body. Next third chapter describes the proposed hardware solution of IR thermometer. The fourth chapter describes a software written for the IR thermometer. The fifth and last chapter summarizes the findings and knowledge from the implementation of non-contact thermometer and measuring emissivity.
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Testing of Hearing Ability in LabVIEW
Stanický, Ondřej ; Tannenberg, Milan (referee) ; Sekora, Jiří (advisor)
The thesis is concerning the studies of certain methods used for examination of hearing and description of protocoles of examination audiogram. There is also described the anatomy, properties and protection of the human hearing. Another part is dealing with properties and proposal of block diagram of audiometry, eventually the realization of audiometry in environment Labview and description of certain parts of programm.
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Workplace for testing of the laser diodes
Zemánek, Martin ; Tannenberg, Milan (referee) ; Wilfert, Otakar (advisor)
Bachelor thesis is focused on laser diodes and proposal in their workplace testing, followed by constructing workplace with program for graphical output with processed values of measurment. Laser diodes paramaters as optical power, symmetry of the laser beam and radiation characteristic are the objective of this thesis. Thesis includes the theory of laser diodes, device list, workplace layout, description of measurment methods, followed by measuring and and processing the values in program with graphical output. Resulting values are compared with catalog data.
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ST-T segments analysis of ECG signals with focusing on T-wave alternance
Tannenberg, Milan ; Sovka, Pavel (referee) ; Tyšler,, Milan (referee) ; Kozumplík, Jiří (advisor)
The Cardiovascular diseases may evocated the high percentual risk of sudden cardiac death in whole world. In several western countries is the number of death higher then number of cancer death. In this time is used a lot of methods for prediction of sudden cardiac death with focus on ECG T-wave alternance. The aim of the theses was to do stronger relation and cooperation with Internal Cardiac Clinic of Faculty Hospital Brno Bohunice on the risk analysis of sudden cardiac death. Secondly, we met the methods used for detection and quantification of simulated TWA. Last but not least was necessary to find TWA detection methods improvement and process the data on real signals obtained from Faculty Hospital Brno Bohunice. First part of the Thesis is focused on summary of pathologic artifacts in ECG signal, which are important for sudden cardiac risk stratification. There are described further known detection and quantification methods for TWA analysis. An interesting part for clinical practice is analysis of TWA trend in time and looking for the best method, which is able to catch and track the short TWA trend changes. Second part describes the new methods improvements, which were tested with interesting outputs. Further, there was developed method for TWA presence statement probability evaluation.
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Design of Hearing Aids in LabVIEW
Macíček, Ondřej ; Tannenberg, Milan (referee) ; Sekora, Jiří (advisor)
This thesis contains the block diagram of hearing aid, anatomy description of human hearing system and description of most important physical values in this problematics of hearing and sound. There are analyzed several types of hearing tests for diagnosis of the hearing loss level and some types of algorithms, which fit the frequency characteristic of patient's hearing loss too. Further this thesis contains interactive program of hearing aid, which has implemented equations for sound equalization.
|
|
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Testing of Hearing Ability in LabVIEW
Stanický, Ondřej ; Tannenberg, Milan (referee) ; Sekora, Jiří (advisor)
The thesis is concerning the studies of certain methods used for examination of hearing and description of protocoles of examination audiogram. There is also described the anatomy, properties and protection of the human hearing. Another part is dealing with properties and proposal of block diagram of audiometry, eventually the realization of audiometry in environment Labview and description of certain parts of programm.
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