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HiFi DA Converter with Integrated Headphone Amplifier
Doležal, Pavel ; Jaroš, Jiří (referee) ; Šimek, Václav (advisor)
This thesis is dealing with a design and fabrication of D/A coverter and headphone amplifier for stereo reproduction in Hi-Fi class. In opening chapter, overall problematics of digital audio signal distribution is discussed. Following chapters are dedicated to converter design, communication protocols, component selection, converter production, circuitry design and firmware programming. The final chapter is dealing with expansion options such as HDMI inputs and surround sound.
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Metodická příručka pro práci s audio analyzátorem Audio Precision
DOLEJŠÍ, Marek
This thesis is focused on the use of the Audio Precision audio analyzer, model APx515. The goal of this thesis is to educate the operator of the measuring instrument about its functions and features. Supporting chapters cover deeper understanding in the field of audio. This thesis was written on the request of the Department of Physics and Biophysics, the University of South Bohemia and shall be used as a methodological guide for working with this audio analyzer. The first part of this document will discuss the theory of audio analysis, and in the second section I will cover the practical usage of the instrument. In the theoretical part, there are various kinds of measurements and audio tests described. Special attention is devoted to commonly used units in audio engineering including their explanation. The next chapter, Acoustic, describes basic terms about sound from a physical and psychoacoustic point of view and also focuses on human hearing. The Chapter about Hi-Fi then describes issues relating to quality music reproduction. The practical part focuses on the use of the analyzer. Several kinds of connections for different tests are described. They are followed by measurement results of a sample of devices of different kinds: preamplifiers, power amplifiers, integrated amplifiers and DACs in consumer electronics.
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HiFi DA Converter with Integrated Headphone Amplifier
Doležal, Pavel ; Jaroš, Jiří (referee) ; Šimek, Václav (advisor)
This thesis is dealing with a design and fabrication of D/A coverter and headphone amplifier for stereo reproduction in Hi-Fi class. In opening chapter, overall problematics of digital audio signal distribution is discussed. Following chapters are dedicated to converter design, communication protocols, component selection, converter production, circuitry design and firmware programming. The final chapter is dealing with expansion options such as HDMI inputs and surround sound.
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