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Modern pitch-shifting algorithms and its aplication in virtual musical instruments
Křupka, Aleš ; Balík, Miroslav (referee) ; Trzos, Michal (advisor)
This diploma thesis deals with pitch shifting methods of acoustical signals. The theoretic part of this thesis involves description of three different pitch shifting techniques, these are the method using a modulated delay line, PICOLA method and method using a phase vocoder. The first two methods represent the processing in time domain, the third method represents the processing in frequency domain. In relation with the PICOLA method, the thesis also mentions algorithms for pitch estimation. The practical part demonstrates the use of these methods. There is described a sampler virtual musical instrument based on the playback of the sounds stored in memory. In this part the particular units providing the required functionality are described. The generating of sounds is controlled by the MIDI protocol. In the sampler is implemented the PICOLA method.
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Experimental synthesizer suitable for microtonal ambient music
Pavlov, Mykhailo ; Dlouhý, Dan (referee) ; Indrák, Michal (advisor)
This bachelor thesis is devoted to an experimental software instrument, the main component of which is a sequencer with the capability of microtonal tuning and scale selection. The main objective of this work is to design and implement such a synthesizer within the Reaktor environment based on knowledge and proposals acquired during the semester project. The work is divided into two parts: theoretical and practical. The task of the theoretical part is to summarize the theoretical knowledge necessary for the design and subsequent implementation of the instrument. These insights include a brief history, types of synthesis, typical design principles, and principles of interaction with the development environment. The practical part describes the process of designing and implementing individual components of the instrument, its design, and subsequently focuses on the practical use of the synthesizer, its unique features, and further theoretical development.
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Modern pitch-shifting algorithms and its aplication in virtual musical instruments
Křupka, Aleš ; Balík, Miroslav (referee) ; Trzos, Michal (advisor)
This diploma thesis deals with pitch shifting methods of acoustical signals. The theoretic part of this thesis involves description of three different pitch shifting techniques, these are the method using a modulated delay line, PICOLA method and method using a phase vocoder. The first two methods represent the processing in time domain, the third method represents the processing in frequency domain. In relation with the PICOLA method, the thesis also mentions algorithms for pitch estimation. The practical part demonstrates the use of these methods. There is described a sampler virtual musical instrument based on the playback of the sounds stored in memory. In this part the particular units providing the required functionality are described. The generating of sounds is controlled by the MIDI protocol. In the sampler is implemented the PICOLA method.
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