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Automation of measurement of directional characteristics of sound sources
Nimmerrichter, Benjamin ; Liska, Matej (referee) ; Schimmel, Jiří (advisor)
This bachelors thesis deals with the topic of automating the measuring of directional sound radiation characteristics of sound sources with the use of one to sixteen, possibly thirty-two microphones connected to an audio device, which supports the ASIO driver technology, which is connected to a computer with an installation of the MATLAB software. In the scope of this thesis a program was created, which is capable of measuring the 2D and 3D directional characteristics of sound sources and it can show the frequency spectrum of the signal. This work addresses the problematics of the effective value of discrete signals, calibration of microphones for measuring sound pressure level, the calculation and measuring of the level of acoustic pressure in dB (SPL), the autocorrelation of a discrete signal, plotting of the measurement in a polar or spherical plot and the calculation of the signal to noise ratio. This thesis contains a theoretical introduction to the measurement and to the propagation of sound, then the composition of the program and the measurement and an assessment of the measured results.
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Automation of Audio Device Measurement on APx500 Platform
Panáček, Richard ; Sysel, Petr (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis is focused on the options of measurement automatization on the platform APx500. This automatization should be achieved not only with the use of the measuring program APx500, but also with the use of third-party programs. In these programs, measuring projects should be created. Among many compatible programs, there are LabVIEW, VEE, and a programing environment using Visual Basic language. The thesis is divided into many parts. The first part is focused on the introduction of the APx500 program and its functions. The second part is aimed at the connecting program APx500 with third-party programs using APx API. The practical part of this thesis is about the creation of a measuring project for frequency response in program LabView. Afterwards, this thesis focuses on creating a measuring project inside Excel document, with the usage of Visual Basic language for Applications. This project is intended to measure acoustic response, impedance and Thiele-Small parameters of a loudspeaker.
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Gas Valve Test Rig
Šefránek, Adam ; Šedivá, Soňa (referee) ; Beneš, Petr (advisor)
This bachelor thesis deals with the innovation of gas valve test rig. First part describes construction, parameters and usage of the original device. Second part determines requirements on a new device and subsequently submits a proposal to meet these requirements. Process of inovation, related problems and differences between final solution and proposal are covered in third part. Last part brings results of test measurement.
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Electronic Load
Pivoňka, Václav ; Uher, Miroslav (referee) ; Beneš, Petr (advisor)
The purpose of this work is to develop an overview of application possibilities Agilent 6063B electronic load, measure the parameters of the electronic load and in a few cases, practically demonstrate its properties. For this purpose create LabVIEW sample application, which enable automation of measurement with electronic load.
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Automation of measurement of directional characteristics of sound sources
Nimmerrichter, Benjamin ; Liska, Matej (referee) ; Schimmel, Jiří (advisor)
This bachelors thesis deals with the topic of automating the measuring of directional sound radiation characteristics of sound sources with the use of one to sixteen, possibly thirty-two microphones connected to an audio device, which supports the ASIO driver technology, which is connected to a computer with an installation of the MATLAB software. In the scope of this thesis a program was created, which is capable of measuring the 2D and 3D directional characteristics of sound sources and it can show the frequency spectrum of the signal. This work addresses the problematics of the effective value of discrete signals, calibration of microphones for measuring sound pressure level, the calculation and measuring of the level of acoustic pressure in dB (SPL), the autocorrelation of a discrete signal, plotting of the measurement in a polar or spherical plot and the calculation of the signal to noise ratio. This thesis contains a theoretical introduction to the measurement and to the propagation of sound, then the composition of the program and the measurement and an assessment of the measured results.
|
|
|
Automation of Audio Device Measurement on APx500 Platform
Panáček, Richard ; Sysel, Petr (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis is focused on the options of measurement automatization on the platform APx500. This automatization should be achieved not only with the use of the measuring program APx500, but also with the use of third-party programs. In these programs, measuring projects should be created. Among many compatible programs, there are LabVIEW, VEE, and a programing environment using Visual Basic language. The thesis is divided into many parts. The first part is focused on the introduction of the APx500 program and its functions. The second part is aimed at the connecting program APx500 with third-party programs using APx API. The practical part of this thesis is about the creation of a measuring project for frequency response in program LabView. Afterwards, this thesis focuses on creating a measuring project inside Excel document, with the usage of Visual Basic language for Applications. This project is intended to measure acoustic response, impedance and Thiele-Small parameters of a loudspeaker.
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|
|
Gas Valve Test Rig
Šefránek, Adam ; Šedivá, Soňa (referee) ; Beneš, Petr (advisor)
This bachelor thesis deals with the innovation of gas valve test rig. First part describes construction, parameters and usage of the original device. Second part determines requirements on a new device and subsequently submits a proposal to meet these requirements. Process of inovation, related problems and differences between final solution and proposal are covered in third part. Last part brings results of test measurement.
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|
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Electronic Load
Pivoňka, Václav ; Uher, Miroslav (referee) ; Beneš, Petr (advisor)
The purpose of this work is to develop an overview of application possibilities Agilent 6063B electronic load, measure the parameters of the electronic load and in a few cases, practically demonstrate its properties. For this purpose create LabVIEW sample application, which enable automation of measurement with electronic load.
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