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Design Rules for Electronic Systems with ATMEL Microprocessors from the EMC Point of View
Kaštan, Jiří ; Svačina, Jiří (referee) ; Urbanec, Tomáš (advisor)
This diploma thesis is dealing with the basic knowledge of the Electromagnetic compatibility. It’s concretely target on electromagnetic interference flowing from the application of electronic gas control by Honeywell company. Author compile the power control board with including software in language C. The next alternates of power control board with the separated microprocessor were designed for the more extended source detection. On these boards there were explored shielding surface features placed directly under the microprocessor. The application reducing the interference was designed in accordance to the rules finding out during this diploma thesis writing.
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Finite element modelling of voice propagation through the vocal tract and around the human head
Tomeček, Vojtěch ; Pellant, Karel (referee) ; Švancara, Pavel (advisor)
This diploma thesis deals with creating of finite element model for the analysis of acustic waves radiation through human vocal tract and through the head surrounding space. The thesis contains a short overview of the anatomy of relevant parts and a short overview of formerly published models relevant to the topic. Then the process of creating the 3D model of human head, including the vocal tract, based on CT scans, and the mesh itself follows. This is succeeded by the computational solution taking in the acount the acoustic absorption of the vocal tract walls and radiation into the open space. The results gained are compared to relevant literature on this topic. The changes in frequency spectra in specific nodes of the mesh are reviewed and compared to relevant literature on the topic. The results could be used as basis of eventual frequention corrections of microphones used for voice diagnosis or registration in general, eg of speach or singing.
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Application for Measurement of Musical Instruments Directional Characteristics
Ustohalová, Iveta ; Orlovský, Kristián (referee) ; Mach, Václav (advisor)
This bachelor thesis is focused on the directional charateristics of acoustics music instruments measurements. Compilalation of measuring apparatus including microphone array and the individual steps of measurement and post-processing of audio recordings in *.wav format using program created in MATLAB and ment for this purpose is described. The output are graphs showing the directional charakteristics of selected instruments - violin, clarinet, guitar and accordion in selected one-third octave bands. The measurement results are interpreted and if available, compared with results given in literature.
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Application for Measurement of Musical Instruments Directional Characteristics
Ustohalová, Iveta ; Orlovský, Kristián (referee) ; Mach, Václav (advisor)
This bachelor thesis is focused on the directional charateristics of acoustics music instruments measurements. Compilalation of measuring apparatus including microphone array and the individual steps of measurement and post-processing of audio recordings in *.wav format using program created in MATLAB and ment for this purpose is described. The output are graphs showing the directional charakteristics of selected instruments - violin, clarinet, guitar and accordion in selected one-third octave bands. The measurement results are interpreted and if available, compared with results given in literature.
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Finite element modelling of voice propagation through the vocal tract and around the human head
Tomeček, Vojtěch ; Pellant, Karel (referee) ; Švancara, Pavel (advisor)
This diploma thesis deals with creating of finite element model for the analysis of acustic waves radiation through human vocal tract and through the head surrounding space. The thesis contains a short overview of the anatomy of relevant parts and a short overview of formerly published models relevant to the topic. Then the process of creating the 3D model of human head, including the vocal tract, based on CT scans, and the mesh itself follows. This is succeeded by the computational solution taking in the acount the acoustic absorption of the vocal tract walls and radiation into the open space. The results gained are compared to relevant literature on this topic. The changes in frequency spectra in specific nodes of the mesh are reviewed and compared to relevant literature on the topic. The results could be used as basis of eventual frequention corrections of microphones used for voice diagnosis or registration in general, eg of speach or singing.
|
|
|
Design Rules for Electronic Systems with ATMEL Microprocessors from the EMC Point of View
Kaštan, Jiří ; Svačina, Jiří (referee) ; Urbanec, Tomáš (advisor)
This diploma thesis is dealing with the basic knowledge of the Electromagnetic compatibility. It’s concretely target on electromagnetic interference flowing from the application of electronic gas control by Honeywell company. Author compile the power control board with including software in language C. The next alternates of power control board with the separated microprocessor were designed for the more extended source detection. On these boards there were explored shielding surface features placed directly under the microprocessor. The application reducing the interference was designed in accordance to the rules finding out during this diploma thesis writing.
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