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Class D audio power amplifier with input selector
Krmela, Tomáš ; Šotner, Roman (referee) ; Kratochvíl, Tomáš (advisor)
This thesis deals with a Class D low-frequency amplifier in class D with an input selector and a tone preamplifier. The preamplifier consists of a Philips TDA1524A electrical circuit. The advantages of this circuit are the usage of simple potentiometers and the absence of potentiometer electronic noise when tuning due to the voltage control of corrections. Core power module is a STmicroelectronics TDA7490 electrical circuit. It is a stereophonic 2 x 25W Class D audio power amplifier.
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Subjective quality evaluation of video sequences
Krmela, Tomáš ; Fliegel, Karel (referee) ; Polák, Ladislav (advisor)
This master´s work is focused on the comparison of subjective assessment of the quality of video sequences. In this study, data are obtained by hardware and sofware techniques and they are compared. In the introduction, methods of video compressions are described. The main part of this work deals wtih the exploring of different methods of subjective assessment of the quality of video sequences. Finally, obtained results from different methods, are evaluated and discussed.
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Class D audio power amplifier with input selector
Krmela, Tomáš ; Šotner, Roman (referee) ; Kratochvíl, Tomáš (advisor)
This thesis deals with a Class D low-frequency amplifier in class D with an input selector and a tone preamplifier. The preamplifier consists of a Philips TDA1524A electrical circuit. The advantages of this circuit are the usage of simple potentiometers and the absence of potentiometer electronic noise when tuning due to the voltage control of corrections. Core power module is a STmicroelectronics TDA7490 electrical circuit. It is a stereophonic 2 x 25W Class D audio power amplifier.
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Subjective quality evaluation of video sequences
Krmela, Tomáš ; Fliegel, Karel (referee) ; Polák, Ladislav (advisor)
This master´s work is focused on the comparison of subjective assessment of the quality of video sequences. In this study, data are obtained by hardware and sofware techniques and they are compared. In the introduction, methods of video compressions are described. The main part of this work deals wtih the exploring of different methods of subjective assessment of the quality of video sequences. Finally, obtained results from different methods, are evaluated and discussed.
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