National Repository of Grey Literature 172 records found  beginprevious126 - 135nextend  jump to record: Search took 0.00 seconds. 
Sound diagnostics
Kohutek, Tomáš ; Veselkov, Vladimir (referee) ; Hammer, Miloš (advisor)
Bachelor diploma thesis deals with noise diagnostics. Explains the basic acoustic concepts and values. Next concentrates on the methodology for assessing machine noise and properties of possible measuring devices. Thesis also includes demonstration of practical measurement with evaluation.
Design of Record Player
Zdvihalová, Markéta ; Sládek, Josef (referee) ; Křenek, Ladislav (advisor)
The main aim of this bachelor thesis is modernization of design of record players. Design should observe all common requierements of industrial design. It should also observe all structural, functional, technological, aesthetical and ergonomic rules and customer requirements. The aim is show own creative and ability to extrude an object from field of technic to the field of aesthetic.
Design of gramophone
Maca, Jakub ; Křenek, Ladislav (referee) ; Sládek, Josef (advisor)
The goal of this bachelor thesis is design of gramophone. Design is based on a close analysis of problems and is based on a knowledge gained in the search part. Turntable should act as a suitable complement in modern interior and meet the right technical and ergonomic characteristics.
Determination of sound source orientation from multichannel audiosignal
Sumtsov, Artem ; Ripel, Tomáš (referee) ; Krejsa, Jiří (advisor)
The goal of this thesis was a research on appropriate methods of determination of sound source orientation and consequently its processing. This thesis describes subsequently four methonds of determination of signal delays between different channels. Each of these methods is evaluated with respect to suitability, usability, error rate and sensibility. In the next part the geometrical model for determination of the sound source orientation is described. Experimental solutions are processed for the situation with three microphones. Calculations are done in Matlab.
Acoustic test chambers
Gajdoš, Petr ; Klapka, Milan (referee) ; Mazůrek, Ivan (advisor)
The aim of this work is to give a comprehensive overview of the function, construction and use of acoustic test chambers in Czech Republic with the available technical descriptions and contacts of these devices, supplemented by the definition of the future development.
Study of acoustic properties of enclosed rooms 
Kovařík, Filip ; Fišarová, Zuzana (referee) ; Šťastník, Stanislav (advisor)
The bachelor thesis deals with the acoustics of enclosed spaces, its behaviour and impact on the clarity and quality of presentation. Here is written transmission of acoustic energy, behaviour of spatial and building acoustics, which builds their diagnostic methods. The work also includes legislative requirements stipulated by the acoustics of enclosed spaces and the achievement of these requirements using different types of acoustic absorption capacity of materials, applications, and more specifically their basic properties. In the experimental part, the measurement of reverberation time in a selected room and the adaptation of acoustic properties so that attained legislative requirements
Technology of making the movie sound
Kolingr, Tomáš ; Vondra, Zdeněk (advisor) ; Truhlář, Filip (referee)
The aim of this study is to provide basic information about the process of making film sound. In the practical part, the theoretical knowledge is confronted with the practical process of creating the short film sound.
Video documentary about Milan Grygar
HAVLÍKOVÁ, Kristýna
The bachelor thesis on Video documentary about Milan Grygar is divided into theoretical and practical part. The introductory theoretical part deals with the art of the sixties of the 20th century in Czechoslovakia, life of Milan Grygar, his works and last but not least a figure, who affected his life and works. This thesis´ aim is to introduce the figure of Milan Grygar and map out his work throughout his artistic genesis. The practical part deals with video documentary which is supposed to be a video tutorial for students of upper elementary school and a didactic aid for teachers in art education lessons at the same time.
Transmission of sound pressure from a static source of sound
KAMARÝT, Jan
I chosed a packing machine as a static source of the sound for my mesurement of sound pressure. The machine was located in a potato warehouse owned by Agricultural company of Čechtice. At the first time I described the packing machine and then I described the entire packing process for better imagination how this machine works and where were the acoustic emissins coming from. The first practical part of this thesis was measuring sound preassure levels near around the machine and at the operator position. The second part of measuring was at the operator position and in some other places. This measurement took eight hours in each spot. Then I calculated equivalent values from the numbers and I measured and compared them with hygienic limits. I found out that there was no need to take steps to reduce noise, because the machine didn´t exceed the noise level.
Impact of motor operation mode of mobile power vehicles on level of acoustic pressure
KLEČACKÝ, Ondřej
The diploma thesis is focused on analysis of noise level of mobile power vehicles in relation to motor operation mode and its evaluation. The thesis core lies within measurement of acoustic pressure levels at four vehicles in different motor operation modes by two audio-noise meters. One meter was places within the cabin, the other outside. The results of the work showed a development in reducing noise at modern power vehicles.

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