Search for dissertations about: "sound nature"

Showing result 21 - 25 of 82 swedish dissertations containing the words sound nature.

  2. 21. Design of soundproof panels via metamaterial concept

    Author : Zibo Liu; Leping Feng; Romain Rumpler; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The goal of the work is to find a way to improve the sound insulation properties of different types of panels in order to meet different requirements. Inspired by the nontrivial behavior of the locally resonant acoustic metamaterials, this concept is introduced into the design of structures in order to explore the potential ways to improve the sound insulation behavior in the relevant specific frequency regions. READ MORE

  4. 22. Robust gas flow metering under extreme industrial conditions

    Author : Emil Martinson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Abstract : In this thesis, a different method for creating acoustic pulses that can be used in the ultrasonic spectrum is proposed. The aim is to develop a robust and reliable system that uses ultrasonic techniques, such as transit time or sing-around, to measure gas flows in extreme environments. READ MORE

  5. 23. Interactive sonification of motion : Design, implementation and control of expressive auditory feedback with mobile devices

    Author : Gaël Dubus; Roberto Bresin; Paul Vickers; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Speech and Music Communication; Tal- och musikkommunikation;

    Abstract : Sound and motion are intrinsically related, by their physical nature and through the link between auditory perception and motor control. If sound provides information about the characteristics of a movement, a movement can also be influenced or triggered by a sound pattern. READ MORE

  6. 24. Reduction of Audible Noise of a Traction Motor at PWM Operation

    Author : Hanna Amlinger; Ines Lopez Arteaga; Siv Leth; Wolfgang Kropp; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electromagnetic noise; pulse width modulation PWM ; switching frequency; traction motor; Vehicle and Maritime Engineering; Farkostteknik;

    Abstract : A dominating source for the radiated acoustic noise from a train at low speeds is the traction motor. This noise originates from electromagnetic forces acting on the structure resulting in vibrations on the surface and thus radiated noise. It is often perceived as annoying due to its tonal nature. READ MORE

  7. 25. Hedonism as the Explanation of Value

    Author : David Brax; Praktisk filosofi; []
    Keywords : HUMANIORA; HUMANITIES; Value; Pleasure; Hedonism; naturalism; affective science; Meta-ethics;

    Abstract : This thesis defends a hedonistic theory of value consisting of two main components. Part 1 offers a theory of pleasure. Pleasures are experiences distinguished by a distinct phenomenological quality. This quality is attitudinal in nature: it is the feeling of liking. READ MORE