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Agreements and Disagreements between Automatic and Human Speaker Recognition
Valenta, Jakub ; Matějka, Pavel (referee) ; Rohdin, Johan Andréas (advisor)
Tato práce se zabývá problémem rozpoznáváním mluvčího. Uvedený pojem je definován a doplněn o jednotlivé metody, které s ním souvisí. Cílem práce je poukázat na shody a rozdíly mezi lidským a automatickým procesem rozpoznávání mluvčího. V úvodu práce jsou popsány teoretické poznatky z obou zmíněných oblastí, tj. na jaké aspekty lidské řeči se zaměřuje člověk, resp. automatický systém. Následně je provedeno několik experimentů, které mají za úkol srovnat tyto dvě metody. Tyto experimenty jsou vyhodnoceny tak, že je možné pozorovat, které testovací úlohy dokáže lépe vyřešit člověk, aby následně bylo možné tyto poznatky použít ke zlepšení funkce automatického systému. V závěru práce je takovýto návrh na zlepšení automatického systému předveden a otestován. Testování proběhlo úspěšně a byla zaznamenána vyšší přesnost při vyhodnocování. Takový výsledek tedy může být užitý v dalších výzkumech a umožnit tak další vývoj v oblasti automatického rozpoznávání mluvčích.
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Unknown.mp3
Ščudla, Marek ; Doležel, Matěj (referee) ; Šrámek, Jan (advisor)
My bachelor thesis is my next music project, followed by instalation and merchandise. I was solving the questions about trends, genre and its boundaries. I was inspired by past and I was trying to fit it into contemporary context.
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Microphone array application
Toman, Vít ; Hanák, Pavel (referee) ; Fedra, Zbyněk (advisor)
Master’s thesis deals with description of issues of reading spatial audio signals using microphone array. Basic method of beamforming (Delay and Sum) is characterized on basis of chosen conception of the microphone array. Specific issues of audio detection and digital signal processing of converted audio signals are characterized and some ways how to solve the issues are adumbrated. Features and limitations of chosen ARM processor in the digital processing of multiple audio signals are described. Especially features and limitations of an internal A/D converter from the perspective of the beamforming are described.
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Determination of Acoustic Properties of Sound-Absorbing Materials
Ďurica, Matej ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This diploma thesis is focused on experimental determination of acoustic absorption of four different material samples. The aims of the work include: research on the given issue, determination of the procedure for the performance of a technical experiment and modification of the measuring device for the determination of acoustic absorption. The performed experiments were evaluated and the results of the sound absorption coefficient were compared with the values given by the manufacturer. Sensitivity analyzes of the experiments were performed.
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Software Multi-Effect for Post-Production of Pop Music
Trkal, Tomáš ; Glembek, Ondřej (referee) ; Černocký, Jan (advisor)
This diploma thesis deals with design and implementation of complex software system for post-production of popular music. The system was implemented as a plug-in module in C++ language using JUCE application framework. The emphasis was on creating a well arranged and intuitive graphic user interface. The plug-in provides a set of audio effects and processors that can be connected into the desired graph structure. For less experienced users, there is a database of preset configurations usable for a variety of input signals.
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Sound emission directivity model
Zdvyhal, Marian ; Hájek, Roman (referee) ; Hejčík, Jiří (advisor)
This diploma thesis solves creation of a computing model of sound propagation for determination of acoustic pressure level around multiple point sound source with consideration of sound directivity of each source (compresor and fan). Thesis contains neccesary theoretical knowledge for creation of computing model and basics of sound measuring, theoretical computing model, measurement data of real unit and model configuration for real measured values. Computing code of the model in Visual Basic for MS Excel is a part of the thesis.
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Mind Pollution
Krausová, Zuzana ; Knoflíček, Tomáš (referee) ; Klodová, Lenka (advisor)
In my work I deal with parallel sounds of engine and beast. I analyzed the sounds of different beasts and searched for those that are as close as the sounds of the engine. As a representative of engine sound, I chose a motorbike, because the character of the beast corresponds with its character. I decided to turn the sound of the engine to the sounds of the beast, so that they responded to the rotation of the gas and whimpered while driving. I use the sounds of a tiger, alligator, cheetah, leopard, lion, and cats. Part of the thesis is interventions in the public space using a sound-engineered motorcycle.
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Scientific Web Portal Generator
Růžička, Štěpán ; Vyskočil, Michal (referee) ; Smrž, Pavel (advisor)
In this document I am talking about dynamic web application, which I am making via Ruby on Rails, XML, MySQL and AJAX technology. Introduce describes, why I have chosen this job, and what you can find in this document. Next part is about Ruby on Rails and XML, where I am describing how to use REXML library and what it offers to you. There are some examples to better understanding that. Continuing with describing libraries, which can offer dynamic, sound and some other effects. Prototype and script.aculo.us are described there and some examples as well. Semifinal chapter is about Web portal generator in general at first and next about single steps when I was working on my application. In last one chapter I am trying to look on my application from user's point of view. I am describing the way, how I tried to make application better for usual user. I joined some reactions from persons who had the opportunity to work with my application. Document terminates by resume of gained experiences.
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Passive Methods of Turbocharger Noise Reduction
Saňák, Stanislav ; Kudláček, Petr (referee) ; Novotný, Pavel (advisor)
In my bachelor thesis, first I introduce to reader, how turbocharger works and what function it holds. I remind basic concepts in section of sounds, which are important to understanding this thesis. Then I focus on turbochargers from the perspective of the noise origin. I explore parts of the turbocharger individually too. To these parts, I assign characteristic types of noises, which can be found there. Then I explore these noises more in detail to find out, why they arise, what is their spectrum of frequencies, sound pressure levels and much more. I also focus on problems of spreading these noises and how they affect other parts of different means of transport. According to these characteristics, I divide different types of these noises to appropriate categories. In next part of my thesis, I try to answer, how noises could be supressed mainly by passive methods, which mostly means implementation different types of silencers. At the end of my thesis, I evaluate individual types of methods to supress noises in different types of turbochargers. Then I focus on their advantages or disadvantages and I try to find the most suitable method to supress these noises in different types of turbochargers.
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Noise map
Lokaj, Jiří ; Kubičková, Alena (referee) ; Rozman, Jiří (advisor)
The aim of this paper is to introduce the measurement of noise and create a noise map in a geographic information system. The first part is focused on describing the physical properties of sound in space, atmospheric and physiological acoustics. It also deals with the physiological effects of noise on the human body and technology needed for measure and process noise. Other part describes the structure of a geographic information system and noise map. The last part is about the practical creation of noise maps, includes a description of the real measurement results and evaluation
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