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Motor control of sound frequency in birdsong involves the interaction between air sac pressure and labial tension
(American Physical Society, 2014-03)
Frequency modulation is a salient acoustic feature of birdsong. Its control is usually attributed to the activity of syringeal muscles, which affect the tension of the labia responsible for sound production. We use ...
Measurement and prediction of speeds of sound of fatty acid ethyl esters and ethylic biodiesels
(Elsevier Sci LtdOxfordInglaterra, 2013)
Active sound quality control of engine induced cavity noise
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009)
Active control solutions appear to be a feasible approach to cope with the steadily increasing requirements for noise reduction in the transportation industry. Active controllers tend to be designed with a target on the ...
On synchrophasing control of vibration and sound radiation for a floating raft vibration isolation system
(2014-01-01)
For the purpose of solving the problems of vibration transmission and sound radiations in ships, synchrophasing control technology was presented. The phases of multiple rotating or reciprocating machines installed on a ...
Análise dos níveis médios de ruído no entorno de hospitais da cidade de Curitiba
(Universidade Tecnológica Federal do ParanáCuritibaBrasilCurso de Especialização em Engenharia de Segurança do TrabalhoUTFPR, 2019-06-28)
Urban traffic noise (engine sound, horns, sirens, etc.), because it is a source of irritation that can affect the hospital environment, depending on its sound pressure level, contributes to the reduction of the welfare of ...
Utilização de filtros adaptativos em sistemas de redução ativa de ruído para ambientes amplos
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2019-09-27)
Industrial noise is a worrysome occupational health and safety subject-matter for employees. Prolonged exposure to noise may generate hearing loss or even heart or psychological problems. This study aims to evaluate the ...