|
|
Laboratory design of a speaker system
Šulc, Martin ; Schimmel, Jiří (referee) ; Špiřík, Jan (advisor)
The bachelor thesis deals with the project of loudspeakers using freely available computer softwares. The thesis is focused on creation of a laboratory exercise called Laboratory design of a speaker system. The basic quantities describing acoustic wave motion and the principles of acoustic spread are explained there. There are also described different parts of loudspeakers like cabinets, loudspeaker drivers and electrical crossovers. Different softwares were chosen for the design. The descriptions of the most convenient programs for the laboratory exercises are introduced in the thesis. The laboratory exercise is devided into three parts. In the first part there is a brief theoretic introduction, the second part describes the control of the chosen software and the third part deals with the topic of this thesis. I have chosen two different sreeware softwares the most convenient for the construction of loudspeakers.
|
|
| |
|
| |
|
|
Loudspeaker System for Laboratory Measurements of Polar Patterns
Morkus, Filip ; Káňa, Ladislav (referee) ; Schimmel, Jiří (advisor)
In the first part the attention is aiming to the choice of suitable loudspeakers. For this choice it was necessary to set required criteria and parameters. The aim of the system was to have as wide reproducibility range of frequency as possible but on the other hand not to be too large. The other criterion was the quality of the loudspeakers and its price. In the second part there was frequency crossover suggested according to the parameters of the chosen loudspeakers. This was suggested for low frequency spectrum as well as for high frequency spectrum. When determining the dividing frequency there were thought over producer’s recommendations and frequency characteristics of the loudspeakers so that the dividing frequency was not set in the place where the loudspeaker does not have “constant” character. The third part concerns the construction of the loudspeaker case. There one can find more details about the construction of the loudspeaker system called D´Appolito and its constructional requirements. This part was kept to the previous parts because integrating “D´Appolito” needs setting the distance between the loudspeakers according to the dividing frequency. It was also necessary to count with their size. According to the loudspeakers parameters it was possible to calculate the capacity of the loudspeaker case, also its shape was said and geometric proportions were calculated. Then everything was simulated in suitable software. In the last part the complete loudspeaker system was measured in an anechoic room. There were the direction characteristics and frequency characteristics measured there. The results of the measuring were compared with the software simulations.
|
|
|
Design and Implementation of Active Loudspeaker System with Digital Input
Uchytil, Filip ; Balík, Miroslav (referee) ; Schimmel, Jiří (advisor)
The work is focused on a design of an active loudspeaker system with a bi-amp amplifier and a digital input. There is described the theory of a loudspeaker enclosure design and its practical implementation. Furthermore the work deals with a design and construction of input circuits such as a preamplifier, Baxandall tone control, active crossover, all-pass filter and S/PDIF. On the basis of the amplifier´s theory the optimal construction of amplifiers and their design are selected. The complex design of the loudspeaker box is devised so that it would reach a maximum acoustic power during the preservation of a low distortion.
|
|
|
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.
|
|
|
Design of PC Speakers
Smrčková, Milada ; Řezníček, Svatopluk (referee) ; Zvonek, Miroslav (advisor)
The goal of this bachelor thesis was the design of PC speakers, which it should be included innovative solving of all construction, function and too design, that it had to be keep all technical, ergonomical and economical aspects. This goal was based on a previous analysis of the issues and than it was used for processing of this bachelor thesis.
|
|
| |
|
|
Design of interior sound system
Paclt, Martin ; Sládek, Josef (referee) ; Zvonek, Miroslav (advisor)
This bachelor thesis deals with analysis and design proposal of interior soundsystem. Thesis solves problems which are connected with design of modern sound system for housing space. Result is detailed analysis design proposal of soundsystem with usage of modern technology, specially deteless flat magnetodynamic transducer.
|
|
|
Design of PC loudspeakers.
Machálek, Róbert ; Sládek, Josef (referee) ; Křenek, Ladislav (advisor)
The topic of my bachelor’s thesis is a system of loudspeakers for personal computer. The purpose is to design original conception of the product with the assumption to create unique solution. This thesis includes close report about solution of my design, 3D digital model and visualizations and a model of loudspeakers system scaled 1:1.
|
guest ::
