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Machine learning in audio effects
Sychra, Jakub ; Mošner, Ladislav (referee) ; Černocký, Jan (advisor)
Získávání hudebních efektů z mixovaných skladeb je složité téma, které vyžaduje znalosti jak v oblasti zpracování signálů, tak zkušenosti s audio inženýrstvím. Tato práce cílí na tvorbu systém, který by byl schopen identifikovat sekvence a parametry kytarových efektů z mixovaných skladeb. Trénovací data byla vytvořena za využití čistých kytarových zvuků z datasetu IDMT-SMT-Audio-Effects. Tyto data byla následně augmentována populárními kytarovými efekty (BitCrush, Chorus, Clipping, Compressor, Delay, Distortion, High-pass filter, Ladder filter, Low-pass filter, Limiter, Phaser a Reverb), které byly implementovány pomocí knihovny Pedalboard tvořící mezivrstvu mezi jazykem Python a standartními VST efekty. Samotný rozpoznávací systém je založený na architektuře VGGish, k níž jsou přidány klasifikační (přítomnost efektu) a regresní (parametry efektů) hlavy. Výkon modelu je hodnocen na základě přesnosti klasifikace a regrese, a také v neformálních poslechových testech.
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Preamplifier for guitar pickups
Raimr, Jakub ; Balík, Miroslav (referee) ; Hanák, Pavel (advisor)
This thesis focuses on design and realization of a 4-channel preamplifier for guitar pickups. The preamplifier is determined to measure balanced spectral characteristics of all four pickups at the same time. The thesis composes of a theoretical introduction about pickups, installation of pickups in the acoustic guitar, measuring spectral characteristics of pickups, design of the preamplifier on a both-sided PCB, realization of the PCB and final measurement using the finished preamplifier. The final product will serve as a~laboratory exercise in the course Hudební elektronika.
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Playing a guitar in the Children and Youth Centre
EICHLEROVÁ, Jaroslava
The bachelor´s thesis is devoted to the topic of playing the guitar in a Children and Youth Centre. In the course of the work, the concept of DDM, its activity and content of activity was characterized. Acording to the set goal, the guitar as a musical instrument was introduced, along with the history as well as the methods and procedures used in playing the guitar. Furthermore, my bachelor´s thesis contains a proposal for specific activities and exercises for a beginning guitarist, which I personally use in my practice as a free time pedagogue in DDM when teaching guitar.
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Musical multi effects analysis
Masár, Igor ; Kubásek, Radek (referee) ; Friedl, Martin (advisor)
This work deals with guitar effect and guitar sound in general. Most widely used effects are described as well as their output time courses are simulated. There is a comparison of analog and digital effects. There is also explained the principal of guitar multiefects, described all parts of guitar efect chain and determined key parameters, which has the main impact on quality of final sound. It is used to describe a methodology for measuring multi-effects and the results obtained by this measurement. The last part deals with psychoacoustic measurements.
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Use of Augumented Reality to Teach Guitar/Bass Playing
Kajan, Miroslav ; Zachariáš, Michal (referee) ; Šolony, Marek (advisor)
This final work deals with a design and implementation of a system suitable for teaching guitar playing by using the technology of augmented reality. A webcam and the musical instrument itself are necessary for a guitar player to achieve the main aim. The system is based on a principal of homography and other techniques to work with the image. The system also renders the tones of a chosen trained element (an accord or a scale) right into the image captured by a webcam.
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Design and construction of a tube guitar amplifier
Šona, Štěpán ; Dvořák, Jan (referee) ; Kubánek, David (advisor)
The text of this bachelor’s thesis deals with the design, simulation and construction of a tube amplifier for electric guitar, based on the well-known guitar amplifier VOX AC 30. The theoretical part deals with the design and simulation of the original circuit. Subsequently, adjustments were made on both channels and simulated. The practical part of the work already deals with the construction itself, measuring the finished guitar combo. Frequency modulus characteristics, harmonic distortion, spectra and time courses of signals for distorted and clear channel were measured. Then the measurement was evaluated.
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Chord recognition
Soudek, Ondřej ; Glembek, Ondřej (referee) ; Černocký, Jan (advisor)
The goal of this bachelor thesis is to create an application, that will perform a real-time analysis of a signal from electric or acoustic guitar and will recognize a chord or tone, played by user. This document contains basics of music theory and the solution of the problem, as well as the results of testing.
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Valve amplifier for guitar
Hrabaň, Václav ; Šotner, Roman (referee) ; Brančík, Lubomír (advisor)
Bachelor thesis deals with design, simulation and construction of guitar amplifier circuit with valves as active devices. Thesis describes in detail one of possible conceptions of a two channel amplifier with switching of clean and overdrive channel. Design contains input amplifier, two switchable preamplifiers, inverter, power amplifier, switching circuit and supply unit. Preamplifiers contain each their own frequency filter and regulation of gain and volume. Power amplifier works in class AB and its power is 40 W.
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Experimental Electro-Mechanical Musical String Instrument
Blasche, Ondřej ; Mojdl, Edgar (referee) ; Dlouhý, Dan (advisor)
The goal of this thesis is to design and build stringed mechanical electrphone with unusual sound characteristics. The end product is an instrument devided into three sections with specific options of sound creation, able to be both plucked and played with a bow. Thesis utilizes knowledge of electric guitar construction and their sound pickup methods. It also deals with experimentation in the field of strig instruments and their development.
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