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Experimental Audio Effect Based on Dynamic Signal Filtering
Leitgeb, David ; Miklánek, Štěpán (referee) ; Schimmel, Jiří (advisor)
The aim of this thesis is the implementation of an experimental audio effect based on dynamic signal filtering. Two implementations of the audio effect were made, the first one using the Matlab environment and its Audio Toolbox extension, and the second one in the C++ programming language using the JUCE framework. The main digital signal processing types present in the proposed audio effect include: frequency filtering, signal delay and modulation of parameters using low-frequency oscillators. The initial prototype of the audio effect mainly serves to verify correct functionality of the proposed algorithms. The result of the second implementation is a fully functional plug-in module usable, for example, for music production. Both versions are available in the VST format, which can be used with numerous digital audio workstations. The thesis is divided into three main parts: theoretical introduction, implementation of the audio effect, and demonstration of its functionality. Theoretical introduction describes several areas of digital signal processing which are crucial for the correct implementation of the individual components of the audio effect. Implementation of the proposed audio effect is described in the following part of this thesis. Description of the implementation in Matlab is mostly done by showcasing parts of the source code. The C++ version of the audio effect is for the most part described verbally. The last part of this thesis focuses on the demonstration of both versions of the proposed effect. This part features several graphical examples demonstrating various use cases of the proposed effect. Audio files corresponding to these examples are included in the appendix.
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Implementation of the Parametric Equalizer into VST3 Plug-in
Pevný, Jindřich ; Schimmel, Jiří (referee) ; Frenštátský, Petr (advisor)
This thesis deals with the field of DSP (Digital Signal Processing), specifically with structures of digital parametric shelving filters, which can be used as building blocks of parametric equalizer. The objective of this thesis is to learn the options of indirect parametric filter design using decomposition of transfer functions into the function of an all-pass filter and implement these using Steinberg’s VST3 SDK.
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Control of Real-Time Digital Audio Signal Processing Algorithms using HTML Browser
Slováček, Martin ; Mačák, Jaromír (referee) ; Schimmel, Jiří (advisor)
VST (Virtual Studio Technology) is one of the most used for real-time audio processing. VST effects are inserted to host applications in the form of plug-ins. This thesis discusses a design of a VST host remote control using a Java applet displayed in a web browser. A graphical user interface of the applet consists of graphical controllers created in this thesis. The number of controlled parameters is passed on to the applet by server using an XML configuration file. Three types of controllers are available: a slider, a knob and a button. If a parameter value change occurs, the applet sends a message with the parameter values to the server. Subsequently, the server reacts to this change by setting the parameters of the loaded VST module. The proposed design was completely realized and practically tested.
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Implementation of time-variant convolution processor
Brhel, Tomáš ; Vrba, Kamil (referee) ; Balík, Miroslav (advisor)
In this thesis there is a design of universal time-variant convolution FIR processor. Proposed algorithm is ready to process long signals with reduced process delay. Furthermore, there are proposed methods for smooth crossfade between different impulse responses. Algorithm is implemented in Matlab environment and later as a VST plugin.
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The software sampler with sounds of of the dulcimer
Bičan, Jan ; Přikryl, Lubor (referee) ; Jirásek, Ondřej (advisor)
Major aim of this thesis is to create VST plugin module, which would be an output part of electronic cimbalom (dulcimer). Thesis explains basic terms at first, such as sampler, cimbalom, VST, MIDI, microphones and microphone techniques for recording. Then it describes particular segments of creating a software sampler with cimbalom samples. That includes recording each of individual cimbalom tones, sorting and editing these samples and implementing to VST technology. Thesis also describes instrument’s difficulties and differences from other related plugin modules and offers solution. There is a thesis’s assessment at the end of the document, where is mentioned its progress, testing with hardware components of electronic cimbalom and its imperfections with suggestions of future improvement.
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Granular Synthesis in Music Production
Pečinka, Pavel ; Glembek, Ondřej (referee) ; Černocký, Jan (advisor)
Cílem této práce je navrhnout a vytvořit aplikaci pro granulární syntézu, využitelnou v hudbení produkci. Aplikace je implementována jako VST3 zásuvný modul s využitím frameworku JUCE a programovacího jazyka C++ a je schopná propojení s programy typu Digital Audio workstation, zkráceně DAW, což jsou programy sloužící jako centrální bod pro hudební producenty, kde mohou mimo jiné vytvářet nové zvuky, provádět mixování skladeb a vytvářet zvukové nahrávky. Tento zásuvný modul je navržen jako sampler a je schopen nahrát zvukový soubor obsahující audio data, která dále využívá pro další zpracování a následné přehrávání. Z vyhodnocení uživatelského testování vyplývá, že je tato aplikace použitelná pro hudební produkci jako nástroj pro granulární syntézu.
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Software for Digital Mixing Console
Zoň, Robin ; Přinosil, Jiří (referee) ; Schimmel, Jiří (advisor)
This thesis describes the design and implementation of a software for digital mixing console built on the Windows platform. This software is designed to offer real-time multi-channel audio processing using multiple input and output units, signal routing between these units and insertion and management of VST plug-in modules. The software uses an audio interface connected with ASIO technology. The thesis is divided into several applications. Main application which computes audio samples and allows insertion and management of plug-ins is programmed in C++ using JUCE technology. This application can be controlled with its own local graphical interface or with web control interface, which is programmed in TypeScript with the use of React technology. Web interface allows user to control VST plug-in modules with its own custom implementation of plug-in control.
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VST Plug-in for Dynamic Processing of Audio Signal
Zoň, Robin ; Frenštátský, Petr (referee) ; Schimmel, Jiří (advisor)
The aim of this thesis is the implementation of effects for adjusting the signal dynamics. This project includes four basic dynamic effects - compressor, expander, limiter and noise gate. The first part is developed in Matlab software. This solution offers signal sidechain input, display of signal waveforms of each block of sidechain branch, recording output signal and allows storage of output characteristics. In the second part, the effect is being realized using VST technology, which offers the possibility of changing the parameters in real time and displaying and recording the signal at various points within the control branch. Project also includes a brief discussion of the use of such dynamic effects in practice and collection of model examples to demonstrate the use of such effects.
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Generator of Harmonic Sounds and Chords
Bednář, Jan ; Mašek, Jan (referee) ; Schimmel, Jiří (advisor)
Major aim of this bachelor’s thesis is creation of VST plug-in module, that is able to generate sound for more tones in the same time. This thesis describes a brief theory of music acoustics which aims to show basic relations between tones, their higher harmonics and impact on the sound color. The function of temperament system of tuning, relations between intervals and way of making chords is described. Next things mentioned in this thesis are basics of VST technology, how to programme with VST SDK and basic MIDI messages for implementation in VST plug-in.
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Design and realization of MIDI controller keyboard
Dvořáček, Štěpán ; Hrbáček, Radek (referee) ; Krejsa, Jiří (advisor)
This thesis deals with the realization of a specific MIDI controller being able to control a computer simulation of the Hammond organ. Theoretical part consists of a brief introduction to working with audio and MIDI on the computer. Next chapter describes Hammond organ and GSI Vb3 simulation resulting in a selection of the key control elements. Mechanical and electronic solution is described in the following chapters. A functional keyboard controller, which can be utilized in a recording studio or in a live performance was accomplished as a result of this thesis.
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