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Subjective assessment of disturbing noise from gramophone records
Vlašín, Martin ; Martinásek, Zdeněk (referee) ; Rášo, Ondřej (advisor)
The bachelor thesis is focused on distortion that occurs by playing gramophone records. Due to functional principle of turntable and due to origin of individual distortion, which may occur while playing records, were selected two most significant and most frequently occurring distortion. For these distortion is studied their effect on subjective assessment of audio record. From data obtained from participants in the listening test was performed statistical analysis, also test of reliability and detection of any possible errors occurring in the assessments of individual listeners. The conclusions from results confirmed differences between two distortions and also between different audio samples on the subjective perception of the quality of audio experience for listener.
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Evaluation of classification efficiency using ROC cruves
Dluhý, Vojtěch ; Sigmund, Milan (referee) ; Poměnková, Jitka (advisor)
This semestral thesis is focused on work eith the ROC curves. Introduces the reader with ROC curves and their use to analyzing signals. Also shows an algorithm for detecting sound of siren in record using a simple algorithm and evaluation of various jamming sound of sirens by displaying the ROC curves, supplemented by calculation and comparing the areas under these curves (AUC). The algorithm is written in a development enviroment Matlab.
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Power line disturbance model
Végh, Zoltán ; Zeman, Václav (referee) ; Mlýnek, Petr (advisor)
Requirements for existing PLC systems are very high (services requiring data rates higher than 1 Mbit/s). To meet these requirements, you must have a model of with real PLC environment. This document provides an overview of basic properties of noise in PLC systems, focusing mainly on the colored background noise, narrowband interferers, and various types of impulive noise in the PLC. Furthermore, different models of interference created by different literatures and simulation models were created with any significant adverse environmental effects of the PLC.
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Electromagnetic field scanner and its utilization in EMC measurement
Chupáč, Michal ; Číž, Radim (referee) ; Kubánek, David (advisor)
Master’s thesis is focused on making the acquaintance of EMC issues and ways of electromagnetic field scanner RS321 utilization for pre-compliance measurements. First part contains analysis of available equipment’s influence on measurement results on the basis of gathered specification. Next part includes an example measurement used as operational manual for scanner and its controlling program. The most important part is correction evaluation for performed EMI measurement of signal generator using its EMC certification protocol and application of gained correction curve on independent EMI measurement of device tested by EMC testing laboratory. Other possibilities of scanner utilization are mentioned in the next chapters. Last part of the thesis contains suitability evaluation of EMC scanner on the basis of findings from performed measurements.
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Evaluation of classification efficiency using ROC cruves
Dluhý, Vojtěch ; Říha, Kamil (referee) ; Poměnková, Jitka (advisor)
This bachelor thesis is focused on work eith the ROC curves. Introduces the reader with ROC curves and their use to analyzing signals and basic priciples of spectral estimation and getting an AUC for ROC curve. Also shows an algorithm for detecting sound of siren in record using a simple algorithm and evaluation of various jamming sound of sirens by displaying the ROC curves, supplemented by calculation and comparing the areas under these curves (AUC). The algorithm is written in a development enviroment Matlab.
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Evaluation of classification efficiency using ROC cruves
Dluhý, Vojtěch ; Říha, Kamil (referee) ; Poměnková, Jitka (advisor)
This bachelor thesis is focused on work eith the ROC curves. Introduces the reader with ROC curves and their use to analyzing signals and basic priciples of spectral estimation and getting an AUC for ROC curve. Also shows an algorithm for detecting sound of siren in record using a simple algorithm and evaluation of various jamming sound of sirens by displaying the ROC curves, supplemented by calculation and comparing the areas under these curves (AUC). The algorithm is written in a development enviroment Matlab.
|
|
|
Evaluation of classification efficiency using ROC cruves
Dluhý, Vojtěch ; Sigmund, Milan (referee) ; Poměnková, Jitka (advisor)
This semestral thesis is focused on work eith the ROC curves. Introduces the reader with ROC curves and their use to analyzing signals. Also shows an algorithm for detecting sound of siren in record using a simple algorithm and evaluation of various jamming sound of sirens by displaying the ROC curves, supplemented by calculation and comparing the areas under these curves (AUC). The algorithm is written in a development enviroment Matlab.
|
|
|
Subjective assessment of disturbing noise from gramophone records
Vlašín, Martin ; Martinásek, Zdeněk (referee) ; Rášo, Ondřej (advisor)
The bachelor thesis is focused on distortion that occurs by playing gramophone records. Due to functional principle of turntable and due to origin of individual distortion, which may occur while playing records, were selected two most significant and most frequently occurring distortion. For these distortion is studied their effect on subjective assessment of audio record. From data obtained from participants in the listening test was performed statistical analysis, also test of reliability and detection of any possible errors occurring in the assessments of individual listeners. The conclusions from results confirmed differences between two distortions and also between different audio samples on the subjective perception of the quality of audio experience for listener.
|
|
|
Power line disturbance model
Végh, Zoltán ; Zeman, Václav (referee) ; Mlýnek, Petr (advisor)
Requirements for existing PLC systems are very high (services requiring data rates higher than 1 Mbit/s). To meet these requirements, you must have a model of with real PLC environment. This document provides an overview of basic properties of noise in PLC systems, focusing mainly on the colored background noise, narrowband interferers, and various types of impulive noise in the PLC. Furthermore, different models of interference created by different literatures and simulation models were created with any significant adverse environmental effects of the PLC.
|
|
|
Electromagnetic field scanner and its utilization in EMC measurement
Chupáč, Michal ; Číž, Radim (referee) ; Kubánek, David (advisor)
Master’s thesis is focused on making the acquaintance of EMC issues and ways of electromagnetic field scanner RS321 utilization for pre-compliance measurements. First part contains analysis of available equipment’s influence on measurement results on the basis of gathered specification. Next part includes an example measurement used as operational manual for scanner and its controlling program. The most important part is correction evaluation for performed EMI measurement of signal generator using its EMC certification protocol and application of gained correction curve on independent EMI measurement of device tested by EMC testing laboratory. Other possibilities of scanner utilization are mentioned in the next chapters. Last part of the thesis contains suitability evaluation of EMC scanner on the basis of findings from performed measurements.
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