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Optimalization of Audio Reproduction Chain for Hearing Tests
Halaš, Rostislav ; Schimmel, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This project describes basic steps leading to the solution of a problem associated with a poor quality of played recordings in the listening room of the Škoda Auto co. . Firstly, the main technical parameters of the reproduction chain elements are resumed. Secondly, the basics of the room acoustics, such as the distribution of the sound field in a bordered space, are explained. On the basis of theoretical relations, the main modes of a cubic room are calculated. Then, software for acoustic response computing is used to simulate various options of both room idealization (room size, absorption coefficient, etc.) and listening point location. Simulations are compared with results gained by measurement. On the basis of this measurement, the quality of acoustics of the listening room is evaluated. In next chapters, the process of the optimalization of the audio chain and setup of the Automotive Sound Quality software are summarized. To conclude, the results are assessed and further steps based on the project are proposed.
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Optimalization of Audio Reproduction Chain for Hearing Tests
Halaš, Rostislav ; Schimmel, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This project describes basic steps leading to the solution of a problem associated with a poor quality of played recordings in the listening room of the Škoda Auto co. . Firstly, the main technical parameters of the reproduction chain elements are resumed. Secondly, the basics of the room acoustics, such as the distribution of the sound field in a bordered space, are explained. On the basis of theoretical relations, the main modes of a cubic room are calculated. Then, software for acoustic response computing is used to simulate various options of both room idealization (room size, absorption coefficient, etc.) and listening point location. Simulations are compared with results gained by measurement. On the basis of this measurement, the quality of acoustics of the listening room is evaluated. In next chapters, the process of the optimalization of the audio chain and setup of the Automotive Sound Quality software are summarized. To conclude, the results are assessed and further steps based on the project are proposed.
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