Search for dissertations about: "Acoustics"

Showing result 16 - 20 of 1024 swedish dissertations containing the word Acoustics.

  2. 16. Putting the Singing Voice on the Map : Towards Improving the Quantitative Evaluation of Voice Status in Professional Female Singers

    Author : Anick Lamarche; Sten Ternström; Thomas Cleveland; KTH; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Voice Range Profile-Phonetogram-Singing voice-Performance-Clinical assessment-health-voice disorder-self-perception-proprioceptive feedback; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : Diagnostic and evaluative methods used in voice care are mostly designedfor the speaking voice, and are not necessarily directly applicable to thesinging voice. This thesis investigated the possibilities of fine tuning, improvingand quantifying the voice status assessment of the singer, focusingespecially on the Western operatic female voice. READ MORE

  4. 17. Power dissipation in car tyres

    Author : Martin Fraggstedt; Svante Finnveden; Michael Brennan; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

    Abstract : Traffic is a major source of green house gases. The transport field stands for 32 % of the energy consumption and 28 % of the total CO2 emissions, where road transports alone causes 84 % of these figures. READ MORE

  5. 18. Vibrations, damping and power dissipation in Car Tyres

    Author : Martin Fraggstedt; Svante Finnveden; Ines Lopez; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Acoustics; Akustik;

    Abstract : Traffic is a major source of green house gases. The transport field stands for 32 % of the energy consumption and 28 % of the total CO2 emissions, where road transports alone causes 84 % of these figures. READ MORE

  6. 19. Modelling of IC-Engine Intake Noise

    Author : Magnus Knutsson; Mats Åbom; Yves Auregán; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IC-engine; intake noise; gas dynamics; linear source data; frequency domain; 2-port; losses; air cleaner unit; filter paper; flow; FEM; BEM; charge air cooler; narrow tube; Acoustics; Akustik;

    Abstract : Shorter product development cycles, densely packed engine compartments and intensified noiselegislation increase the need for accurate predictions of IC-engine air intake noise at earlystages. The urgent focus on the increasing CO2 emissions and the efficiency of IC-engines, aswell as new techniques such as homogeneous charge compression ignition (HCCI) mightworsen the noise situation. READ MORE

  7. 20. Aeroacoustic Prediction for Vertical Axis Wind Turbines

    Author : Aya Aihara; Hans Bernhoff; Anders Goude; Mats Åbom; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluid; acoustics; noise; sound; wind energy; vertical axis wind turbine; aerodynamics; airfoil; simulations; CFD; LES;

    Abstract : This thesis investigates the aerodynamic and aeroacoustic prediction of vertical axis wind turbines, using computational fluid dynamics simulations. Noise pollution from wind turbines is one of the disadvantages of wind energy, calling for strategies to reduce noise levels. READ MORE