Essays about: "acoustical"

Showing result 16 - 20 of 47 essays containing the word acoustical.

  1. 16. Duct mode evaluation for traction motor outlets

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Michail Vourakis; [2020]
    Keywords : ;

    Abstract : This study investigates duct mode propagation at outlets of traction motors, featuring an open fan air-cooled architecture. Both acoustical measurements and simulations are employed. Measurements are performed for two duct outlet geometries, a radial and a non-radial outlet, both combined with an equidistant and a non-equidistant blade fan. READ MORE

  3. 17. Indoor air quality, thermal comfort and damages assessment of four buildings in Athens

    University essay from KTH/Hållbara byggnader

    Author : Orfeas Stouras; [2020]
    Keywords : s: Indoor air quality; Thermal comfort; Building damages; Questionnaire; Inspection; Sick building syndrome; Mechanical ventilation; Air distribution system;

    Abstract : Nowadays individuals spend more than 85% of their total time in indoor environments, mainly at home and work. Thereby, the quality of the indoor environment plays a substantial role in human health and wellness. READ MORE

  4. 18. Modeling and Compensation of Nonlinear Distortion in High Efficient Electrodynamic Loudspeakers

    University essay from Luleå tekniska universitet/Signaler och system

    Author : Caroline Holmström; [2020]
    Keywords : ;

    Abstract : Loudspeakers transform electrical energy into acoustic waves but most of the electrical energy is lost as heat. It is possible to increase the electro-acoustic efficiency by changing the electrical, mechanical or acoustical design of the loudspeaker but with these changes come unwanted side effects. READ MORE

  5. 19. Is there a correlation between the natural reverberation in a critical listening environment and adjustments of an artificial reverb?

    University essay from Luleå tekniska universitet/Institutionen för konst, kommunikation och lärande

    Author : Marcus Brandberg; [2019]
    Keywords : Audio engineering; acoustics; control room; reverberation; reverberation time; psychoacoustics; mixing; reverb; Ljudteknik; akustik; kontrollrum; ljud; efterklang; efterklangstid; psychoakustik;

    Abstract : One of the mixing engineers most important tool when listening, analyzing and taking decisions is the physical space in which the reproduction system and the monitors are placed. The space needs to fulfill certain aspects to be able to qualify as a control room considered good for taking these decisions. READ MORE

  6. 20. Absorption properties of green sound barriers

    University essay from KTH/MWL Marcus Wallenberg Laboratoriet

    Author : Sherif Fouda; [2018]
    Keywords : Impedance tube; Sound absorption measurement; transfer function; three microphones; Sound barrier; ISO 10534-2; ASTM E2611-09.;

    Abstract : This thesis was conducted on behalf of Butong AB, who wanted to test and develop an environmental friendly, so called green sound barrier, which combines both art and science.Different configurations of the product were proposed by the company with various filling materials, as it was predicted that the filling materials would be the main sound absorbent among all parts of the structure. READ MORE