Sökning: "Acoustical measurements"
Visar resultat 16 - 20 av 20 avhandlingar innehållade orden Acoustical measurements.
16. On Dimension Reduction in Sensor Array Signal Processing
Sammanfattning : During the last decades, sensor array signal processing has been a very active research area. More recently, relations between many of the proposed methods has been examined. The problem of assessing the estimation accuracy of these methods has also been addressed. LÄS MER
17. Machining Monitoring and Control : Based on Parametric Modelling
Sammanfattning : The objective of this work was the development of aMachining Control prototype system for turning, whichintegrates three fundamental aspects of Machining Controltechnology: Monitoring, Control and Optimisation. MachiningControl refers to the detection and automatic handling ofdisturbances in machining processes. LÄS MER
18. Textile Sound Design
Sammanfattning : There are a number of ways to describe the aesthetical expression of a textile, but how is it possible to express its sound affecting qualities? This thesis aims at developing conceptual and methodological tools in order to adapt sound within the textile design area. Occupational groups working with sound are to a large extent problem driven. LÄS MER
19. Studies of flow duct acoustics with applications to turbocharged engines
Sammanfattning : A number of experimental and theoretical studies, performed in the field of technical flow duct acoustics are presented in this thesis. The acoustical methods treated are implemented on turbocharged IC-engines and engine gas exchange system components. A new method based on the well-known two-load technique has been developed. LÄS MER
20. Spin transfer torques and spin dynamics in point contacts and spin-flop tunnel junctions
Sammanfattning : The first part of this thesis is an experimental study of the spin-dependent transport in magnetic point contacts. Nano-contacts are produced micromechanically, by bringing a sharpened non-magnetic (N) tip into contact with a ferromagnetic (F) film. LÄS MER