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Chorus effect - innovation of laboratory exercise
Zvončák, Vojtěch ; Schimmel, Jiří (referee) ; Říha, Kamil (advisor)
The thesis is a theoretical preparation and description of the construction of a laboratory device, which will be used in the laboratory of Studio and Musical Electronics course. At the beginning of the thesis there are basic features of effects with delay line explained. Then CHORUS effect and its mathematical function is desribed. Features of delay line are shown - delay line contains BBD shift register working on CCD principle. There are Frequency Response characteristics of CHORUS effect simaluted in VST Plugin Analyser program. Practical part deals with the description of the individual parts of the whole device circuit. Results of the significant signals measurement are introduced in chapter 5. A design of power switching supply for this laboratory device is presented at the end of the thesis.
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Real-Time Analysis of Audio Signals
Řezáč, Martin ; Schimmel, Jiří (referee) ; Černocký, Jan (advisor)
The goal of this thesis is creation an application, which can perform real-time fundamental frequency tracking of incoming audio samples. According to detected frequencies, the program generates MIDI messages, which are sent to chosen MIDI device. First, the reader is introduced to the issue of fundamental frequency tracking. The following part describes individual methods, especially the one based on spectral analysis of a tone. A description of used technologies is also a included in this part of this thesis. In the following part, the implementation and testing of application are described including opinions of several musicians about this product. At the end, the whole work is concluded and the possible further development is outlined.
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Design and Realization of Acoustic Treatments of Acouctic Space for Musical Production
Skvaril, Šimon ; Říha, Kamil (referee) ; Schimmel, Jiří (advisor)
Subject of this thesis are acoustical properties of space which is used for musical production and reproduction. It covers procedures, which are used for finding out acoustical parameters of chosen space, including virtual modeling and software simulation. Next, there are calculations and design of acoustical elements, which should help to improve quality of music listening. At the end those elements are created and applicated with their functionality verified by measuring acoustical properties
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Multiplatform audio player
Henzely, Július ; Schimmel, Jiří (referee) ; Sysel, Petr (advisor)
This master's thesis focuses on problematic of creating applications based on multiplatform framework. This thesis also includes fundamental theoretical knowledge about relational database system SQLite, which has been used in a practical part of the thesis. Programing of multiplatform audio player which could be used in speech-language pathology clinic is essential portion of the practical part. Player was enhanced with the database of patients and ability to generate XML files.
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Wavefield Synthesis for Linear Loudspeaker Array
Panáček, Richard ; Balík, Miroslav (referee) ; Schimmel, Jiří (advisor)
This master thesis is meant to create a function for processing audio signals with Wavefield Synthesis for linear loudspeaker array. The text focuses on general issues of Wave Field Synthesis and practical design of 2.5D synthesis. It introduces Huygens’ principle followed by Rayleigh’s Theorem together with Rayleigh’s integrals. True design realizations are introduced based on theoretical procedures. The text states advantages and disadvantages of Wave Field Synthesis with linear loudspeaker array and also recounts solutions of some of the problems. The practical part of this thesis is devoted to designing two functions of Wave Field Synthesis inside the programming platform Matlab. The first function serves for processing signals from audio recordings and the second one for processing signals in real time. Proper functioning of procedures used in this thesis is then tested by a listening test.
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Online reservation system for laboratories and equipments
Točený, Ivo ; Schimmel, Jiří (referee) ; Sysel, Petr (advisor)
The bachelor thesis deals with the issue of a clear reservation system using a web interface for laboratories and laboratory equipment with the possibility of creating reservations with and without repetition, bulk reservations, tracking current reservations, canceling and approving reservations, account management and generating pdf dynamic documents using PHP, Nette, HTML, CSS and SQLite database system.
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Audio speaker system with baffle made from alternative materials
Hüttl, Ondřej ; Schimmel, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This thesis firstly consists of an analysis and a description of materials suitable for construction of loudspeaker enclosures and a design of the loudspeaker system with the enclosure made of a synthetic stone. Electro – acoustics drivers have been described with a focus to a frequency range, a principle and a construction for an explanation of their function. Drivers based on electrodynamic principle have been described closely. An analysis of materials used for the loudspeaker enclosure production has been done and tradicional and alternative materials have been described as well. Specific modulus, density and stiffness have been taken as an objective evaluative criterion. An evaluation indicates appropriate properties of plastic, aluminum and stone based materials. The function and kinds of loudspeaker enclosures have been described. The function, properties and design of a vented box loudspeaker system have been described closely. The last part of this thesis is individual design of a two-way vented box loudspeaker system with the enclosure made of synthetic stone. A simulation of a driver behavior built in the enclosure and compensation circuits and crossovers design and simulation have been done. The enclosure has been designed with high stress to minimize negative effect of the enclosure to the final sound quality.
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Database of acoustic records
Terz, Marek ; Schimmel, Jiří (referee) ; Sysel, Petr (advisor)
The databsae of accoustical recordings is a web-based application, which is accessible with an usual web browser. There were used technologies, that are ussually used in web applications. This ensures, that the application is open for using by wide range of users. The application enables uploading WAWE files to the server and allows the user to add various description of the recordings. The application allows also comparing the quality of recordings, which were processed with some method for highlighting the accoustical signal from noise. This function is established by listening tests, which are open for every user, who wants to join the tests.
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Web Portal for Support of Education
Vicen, Šimon ; Povoda, Lukáš (referee) ; Schimmel, Jiří (advisor)
The thesis is focused on creation of web page based on wordpress development system in work with single sign-on login system via VUT web site in Brno. Thesis stepwise explains SSO atributes and ways how we can achieve this goal to make it work within given web services. Moreover, the thesis also explains functions of eduid.cz federation and technologies that it works with. Practical part is dealing with design of web, web applications, front-end cloud storage accessed by users and page working with login system via VUT sites and registering its users.
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