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Effect amplifier for electric guitar
Kočiš, Martin ; Brančík, Lubomír (referee) ; Kratochvíl, Tomáš (advisor)
In the first chapter, the thesis concisely describes perception of harmonic frequency components by human ear. The second chapter introduces the reader into purpose of guitar effects and summary of usual types, which is possible to meet on the market. The third chapter contains functional description of chosen effects including designed schematics and simulations of functionality in time and frequency domain, eventually unrealized solution. The device contains input highpass filter with emitter follower, booster, overdrive and clean amplifier, circuit for octave-up frequency shift, delay line, output emitter follower with lowpass filter and power supply for all these circuits. Selection of the effects and its controls was subordinated especially to use in alternative rock music. The design is based on simulations executed using OrCAD PSpice. The realization process and the measurement is described in the fourth chapter and the last chapter contains conclusion of the project.
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Modification of Vocal Tracks in SW Post-Production of Music
Trkal, Tomáš ; Beran, Vítězslav (referee) ; Černocký, Jan (advisor)
This thesis describes a design and an implementation of a vocal tracks processing application. The application consists of several sub-modules representing audio processors and effects. It is implemented as a plugin created with the VST technology. The plugin provides a simple control system and an integrated database of presets which help mainly less experienced users to significantly speed up the process of processing the vocal tracks. The user evaluation shows that application is successful both in creating demos and professional mixing of music tracks.
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Realization of the chorus effect with BBD
Černý, Filip ; Mačák, Jaromír (referee) ; Říha, Kamil (advisor)
The aim of this thesis is conception and construction of new laboratory device enabling realization of the musical effect CHORUS. Part of this work is theoretical analyses of effects using delay line and charge coupled devices with BBD. The next part is dealing with conception of particular sections of the device. The device is constructed by individual standards and construction recommendation. The device is constructed for measurement purposes therefore it contains various setting elements. The final part is dealing with testing of the device and with a manual for measuring on this device in laboratory of musical electronic.
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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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