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The spectral and directional analysis of xylophone, vibraphone and glockenspiel
Hoffman, Pavel ; Indrák, Michal (referee) ; Jirásek, Ondřej (advisor)
Bacherlor‘s thesis deals with spectral analysis and directional characteristics of idiophonic instruments, xylophone, vibraphone and glockenspiel. It analyzes various details during spectral analysis, that could have an effect on the spectrum of a given instrument, and especially on its inharmonicity, thus analyzing its effect on the hardness of mallet, dynamics and the location of the mallet striking the bars (stones, wooden plates). It examines the changes in the harmonic range and the formant areas of instruments. The thesis further describes the mallets, the instruments themselves, theoretical base and the means by which the sound samples were acquired and processed.
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Experimental Software Musical Instrument Controlled by Light Color
Liska, Matej ; Indrák, Michal (referee) ; Dlouhý, Dan (advisor)
Bachelor thesis contains the theory for realization of experimental software instrument controlled by light color. It brings knowledge of sound and light waves and color pro- cessing. Besides others, it describes process of generating digital signals using additive synthesis, methods of signal processing and sonification techniques. It solves program- ming possibilities of creating, processing, playing and saving digital audio signals. The audio source is written in Java language on the JavaFX programming platform.
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Experimental Software Synthesizer and Sequencer
Fadieiev, Heorhii ; Indrák, Michal (referee) ; Dlouhý, Dan (advisor)
This bachelor thesis is devoted to an experimental software synthesizer and sequencer. Its main goal is the realization of an experimental electroacoustic musical instrument based on a design created within the semestral thesis. The unique characteristic of this synthesizer is the possibility of assigning to each tone a different waveform from the field of subtractive synthesis, but also amplitude and frequency modulation, as well as the possibility of creating a complicated rhythmic structure. The work is divided into several parts. The first one deals with the collection of theoretical knowledge focused on the topic of sound synthesis, MIDI and software program Max. The second part of the work presents the design of an experimental instrument taking into account the block diagram of the synthesizer, its sequencer and generator. The next part of the work deals with the implementation of the instrument, describes its appearance, GUI, data storage in its memory and analyzes the patch of the synthesizer. The last part describes practical experience and general characteristics of the resulting instrument.
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Experimental Software Musical Instrument
Konečný, Dominik ; Indrák, Michal (referee) ; Dlouhý, Dan (advisor)
The goal of this document is a design and realization of a synthesizer combining additive and subtractive synthesis in Max/MSP. The synthesizer will distinguish itself from others with its high variability of amplitude envelopes, low frequency oscillators (LFO) and an option of micro interval tuning and inharmonious spectrum. There will also be an option to setup the parameters by typing a text string.
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The comparison of acoustic properties of guitars from the same product line
Trávníčková, Hana ; Indrák, Michal (referee) ; Jirásek, Ondřej (advisor)
This work is dealing with acoustic features of Furch guitars. In theoretical introduction is possible to find an information about basic characteristics of a tone. Following chapter about acoustic guitars is dealing even with mostly used types of woods for their manufacturing. In special chapter are described spectres of signals, LPC analysis, sound radiation of instruments and Chladni figures. Mentioned terms have been evaluated from measurements and are available in practical part of this work also including description of implementation of the measurement. As an output of this work is a comparison of acoustic features of measured guitars, their colours and modes.
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The Influence of single harmonics or formants on timbre color perception
Klimeš, Martin ; Indrák, Michal (referee) ; Jirásek, Ondřej (advisor)
This thesis is dealing with the research of the influence of individual harmonic on the perception of sound color. An application was created with a questionnaire in which respondents assessed a total of 29 samples on different bipolar scales.The samples were either modeled by additive synthesis or created by modifying musical instruments. The aim was to investigate how and what combinations of higher harmonic affect the perception of sound color. The experiment is based on the semantic differential method. The samples were divided into several groups and within these groups they were compared and related to the expected color perception.
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The Evaluation of masking of harmonic components in a mixture
Kovanda, Jindřich ; Indrák, Michal (referee) ; Jirásek, Ondřej (advisor)
This thesis deals with design and creation of listening test in which its respondents were setting certain harmonic of the tone to mixture of up to 16 harmonics. The respondents were setting intensity of the harmonic to the border position, in which the harmonic was not masked by the other harmonics in the tone and in which the harmonic stood up from the mixture. The respondents were stetting the harmonics from the first to sixteenth, in various types of the spectrum, pitch and intensity of the tone. Based on the results relations were found which determine how the perception of masking of harmonics vary with their order in the spectrum.
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Experimental Software Musical Instrument on Android Platform with Ability to Control Parameters by Text Conversion
Rychtecký, Václav ; Indrák, Michal (referee) ; Dlouhý, Dan (advisor)
The purpose of the thesis is to create a mobile application on the Android platform, characterized by creation of sound using a text captured by a built-in camera of the device in combination with synthesizer, sequencer and sampler. The implementation is partly based on a design prepared within a semestral thesis and is divided into several parts. The first part briefly describes the types of syntheses, the Android operating system, the Pure Data programming language, MIDI and the Android library for controlling Pure Data. The second part deals with the design of the application and the third part describes the implementation and especially the functionality of the application which is created using the programming language Kotlin and IDE Android Studio from JetBrains in combination with the language Pure Data.
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