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	Logaritmický dekrement tlumení dřeva Trojáková, Gabriela Detailed record
	Analýza vibro-akustických vlastností kobylek piana Doskočil, Tadeáš The subject-matter of the diploma thesis is the research of effects of acoustic properties which are used for making piano bridges. In this work technological process of different piano bridges is discussed and problems related to it. In the next step materials like: maple, hardrock maple, laminated maple, laminated maple and mahagony, ebony, beech, laminated beech, crosswise glued beech, laminated beech and lignamon and hornbeam are compared in the aspect of acoustic properties. The differences among acoustic properties were searched by non-destructive methods with the help of device metering and final elements method. A frequence analysis of embedded grand piano soundboard was made. Statically eminent differences of acoustic properties were found among metering samples. There were found out the own frequences of metering soundboard and frequency spectrum in particular parts of piano bridge Detailed record
	Logaritmický dekrement tlumení dřeva Trojáková, Gabriela Detailed record

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